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Well, after almost two years of reading, lurking, and asking dumb questions I finally pulled the trigger and installed a new SSD in my 11,4 2015 15-incher. (Why this thread doesn't also include 2015s always had me scratching my head, lol.)

This is my own experience, and certainly not a guide. I am the last person you want to use as a poster child for doing anything! But, I will say that this thread, the people who help others on this website, are deserving of all the credit.

If you are too busy to read all 364 pages of posts, don't feel bad. I have been here countless times and could never read them all. I have read a lot of posts, but not even close to half, even a third. And, much of the content here is just too heady for me, to be honest. So, a dummy gave this a whirl. Here's how it went. (I'm editorializing to embellish for those who might benefit from my babble.)

1. I waited for my AppleCare to expire in April before undertaking this task.
2. The actual removal and replacement took 10 minutes. Getting the SSD, the Sintech adapter, the screwdrivers took more time than that!
3. I am terrible at file management. I have been reading Lloyd Chambers' macperformanceguide.com blog for what feels like nearly 10 years, I even paid him, and bought OWC RAID 5 set-ups, you name it, I stink at file management! (I'm too busy editing my own crappy photos, running my two very small gig like businesses into the ground, writing my own garbage copy, etc. I haven't the time to be an IT expert, but we have to try, right? This forum, and all of the others like it, are worthy of your attention. Read the first page. I have read it at least 20 times, and while I wish it had some things to make me feel better, nobody is getting paid to post here, so Lord I'm just thankful it is there at all. In a nutshell: This upgrade is a lifesaver for me. If it works over the long haul (a couple of years on this 6-year-old box would be nice), until I can get the 2nd or 3rd iteration of the newer 16" M silicone, will be awesome.
4. Here are the photos of my little swap, and with a bit of dialogue to explain what I did. Very lay person terminology. Here goes!

a) This is the SSD and Sintech adaptor. My machine is 11,4. I could not find anything here saying it has hibernation issues, so was hopeful. I bought these months ago. It has taken me a long time to get up the nerve to do this as I only have one working machine. My old work iMac is still... screen dead.

tempImageLqJx99.png


Here is the screw driver set I got on Amazon.com. It has all sorts of heads, and can be useful for a lot of things! There are two different sized screws for the "job", 10 are on the back cover, one holds in the drive and is slightly smaller. They are star patterned bits. This kit had all I needed.



tempImageMuT9C5.png


Obviously, a back-up was required. This is a Lacie I have had for years. It used to have a HDD, but I threw in a 1TB SSD some time ago, maybe a year or more. I had partitioned it for TM and data, but the TM maxed out. I was unable to use it! I spent a day offloading files onto slower portable HDDS just to reformat it so I could do a. TM for this swap. A royal PITA, but when I did the TM somehow I went from 6GB left on my stock 250GB SSD to 64GB! I have no idea how or why, but used the space to upgrade to Big Sur, which I thought might make the recovery smoother.

tempImageKdp9D5.png


I use a hard shell cover and have never taken it off except for one AC repair and they removed the cover. The replaced the screen. What I found shocking was how dirty the shell is/was, and how scratched too.

tempImage1dXtgy.png


Look at how terribly scratched the screw areas are! I got my AC work done via Apple's site, but they (Apple) sent me to a third party vendor where I live.

tempImageYnMXRd.png


One screw, aide from the 10 on the back shell cover, and done deal!

tempImagetyhPrv.png


I tried to restore from my TM back-up. but that didn't work. Aduit13 was spot on you have to install the OS from the web. The TM drive did not show without doing an Internet recovery to Mojave, so a downgrade from Big Sur. Kinda wonky but no big deal.

tempImagedRlTCr.png


My computer was back to life! And, it prompted me to upgrade to Big Sur, which I did, and will probably regret, since I have yet to do a search here in the thread about Big Sur's problems lol.

tempImagebp04xF.png


I am typing this on my machine after the swap. The most time consuming part of this was getting my data properly backed up, and doing the recover and updates, which involved little more than a few mouse clicks. The laptop bottom is hot. Always was. I do not hear the fans yet. They will probably come eventually.

If you are afraid to do this, but have a machine like mine, e.g., 11,4, and have a few hours, this is (so far) a massive improvement. I now have 1.8TB of space!!

Thanks to all here who post.
 

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To reduce battery drain during sleep, check out my FAQ. Q1 is generic solution (not specific to ssdpmEnabler).

1. How to reduce battery drain during sleep?


To reduce battery drain at idle, install ssdpmEnabler (and/or NvmeFix).

To reduce battery drain during read/write operation, don't be silly by picking "high performance" SSDs. Your old Mac laptops (except 2015 15-inch MBP) won't benefit a dime at the expense of higher power consumption. Folks here have tried and proven a couple of models that do well performance & power consumption wise. Some are better than others but in general won't be wrong with any of them. I would say don't punish yourself by trying something new unless you could manage it yourself.

With all the above THREE areas covered, you're in best shape: a 3rd-party NVMe SSD replacement with much larger capacity and higher performance in good old Mac's that outshine the Apple original's.
Hello Kvic thank you very much for your support, I have done both terminal commands and hopefully, it will stop draining my battery over the night, saying that I can see that just by using firefox with only 3 tabs my battery still losing a lot of charge (around 1% in about 1-3min) which is not really good If I get a new drive (

Crucial P1 NVMe PCIe 2280 M.2 SSD 1TB - CT1000P1SSD8) will it help to stop drain my battery????​

As I mentioned earlier at this moment I am using OSCOO 0N900A NVME. Big thanks to everyone for their support, really appreciated.
 
Well, after almost two years of reading, lurking, and asking dumb questions I finally pulled the trigger and installed a new SSD in my 11,4 2015 15-incher. (Why this thread doesn't also include 2015s always had me scratching my head, lol.) ....

.... If you are afraid to do this, but have a machine like mine, e.g., 11,4, and have a few hours, this is (so far) a massive improvement. I now have 1.8TB of space!!

Nice Post - Great Pics 👍 - I upgraded my mid 2015 rMBP - 18 Sept 2018 - with a Samsung 970 pro - very fast - still working great - I later had to replace the battery (swollen battery was causing it to freeze and finally quit) luckily a new battery got things back up and running - might be worth checking your battery too ?
 
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Nice Post - Great Pics 👍 - I upgraded my mid 2015 rMBP - 18 Sept 2018 - with a Samsung 970 pro - very fast - still working great - I later had to replace the battery (swollen battery was causing it to freeze and finally quit) luckily a new battery got things back up and running - might be worth checking your battery too ?
I was thinking about that. I haven't boned up on how-to yet, but am definitely feeling a tad more courage after this first go around, and was going to look into cleaning this thing too. It is a total pigsty in there. I was literally picking out my dog's fur for Pete's sake!
 
hi everyone, i have a question regarding ssdpmenabler
am i able to re-enable SIP on my rMBP 2015 13" on macos Big Sur, after having installing it and verified that its working, using the commands provided on the GitHub page?
thanks
 
After reading this thread I am still quite confused. Please bare with my ignorance.

This Samsung 970 Evo plus (with latest firmware installed) is considered tested and working.

This Sintech NGFF M.2 nVME SSD Adapter Card for Upgrade MacBook Air (2013-2016 Year) is said to be best.
But the seller states it is NOT compatible with the 970 EVO Plus. I am guessing this is old non updated info that changed with the new firmware for the SSD.

I have a MacBook Air mid 2013 with Mojave Boot rom 431.0.0.0.0 into which Big Sur will be installed tonight.

My confusion comes from these two contradictory chunks of info existing in the same thread:

1) This ssd and this adapter work. I may have some issues with overheating and loss of available battery power, but it will work fine.
2) The MacBook Air 6,2 (mine) is not a good host for this or other ssds.

Questions:
- How can I verify the firmware to be up to date on the SSD, on a mac? The 970 EVO Plus was bought as a 2020 version.
- Which statement or combination of these two above would be valid today?
Is there a better "proven and tested" combination of SSD and adapter to use with the 6,2?

I already have a 1TB Samsung EVO Plus and I would like to install this, but only after I hear from any of you who have this SSD in use in your MacBook Air 6,2.

Your help is highly appreciated!
 
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hi everyone, i have a question regarding ssdpmenabler
am i able to re-enable SIP on my rMBP 2015 13" on macos Big Sur, after having installing it and verified that its working, using the commands provided on the GitHub page?
thanks

Lots of misinformation related to SIP. I intended to add a FAQ regarding this for quite a while. In fact, I'm in the middle of preparing one but then I realize I have to go through quite a bit hassle for fact-check. So may I just borrow you to do this for me and others. Here is my test request:

For people running High Sierra, Mojave, Catalina, or Big Sur, once you confirm ssdpmEnabler working (as per my Guide), re-enable SIP, reboot and then check again to see if ssdpmEnabler is still loaded and working.

Report your results here please.

Crucial P1 NVMe PCIe 2280 M.2 SSD 1TB - CT1000P1SSD8)
will it help to stop drain my battery????
As I mentioned earlier at this moment I am using OSCOO 0N900A NVME. Big thanks to everyone for their support, really appreciated.

Crucial P2 does not appear to be as good as before because folks reported new batches (since around May 2021) come with QLC chips (i.e. very slow sustained write speed) instead of TLC. Check out the last 10 or 20 pages for details.

To everyone, I also added two more FAQ related to ssdpmEnabler (or not):

2. How to get the best experience out of replacement SSDs?

3. Why are MacBookAir6,2 and MacBookPro11,1 not supported?

 
Last edited:
I was thinking about that. I haven't boned up on how-to yet, but am definitely feeling a tad more courage after this first go around, and was going to look into cleaning this thing too. It is a total pigsty in there. I was literally picking out my dog's fur for Pete's sake!
Congratulations to the upgrade!
As for the battery – this Macbook Pro model is still officially supported by Apple. Considering the effort, the costs and quality when you buy a new 3rd party battery, it may be worth getting an original Apple part. It has been discussed here though that the Apple store might not be the best address for that. But I have good experience with ASPs. Maybe the old SSD is needed to be installed for this. Anyway, Apple has fixed prices for this, and they are not way to high in my opinion.
 
Congratulations to the upgrade!
As for the battery – this Macbook Pro model is still officially supported by Apple. Considering the effort, the costs and quality when you buy a new 3rd party battery, it may be worth getting an original Apple part. It has been discussed here though that the Apple store might not be the best address for that. But I have good experience with ASPs. Maybe the old SSD is needed to be installed for this. Anyway, Apple has fixed prices for this, and they are not way to high in my opinion.
Machine still running! Having had any nightmare kernel panics or anything (yet). Used Adobe Bridge, Photoshop, and InDesign without issue. Will try FinalCut or iMovie soon. Everything works, a rarity with any computer! Yes, I had AC+ on this until just a few months ago. Not having a battery issue yet. I wonder how long they last, but then, there is likely a whole big thread on this elsewhere.

Don't know if this new SSD is faster or not. Not seeing a lot if pinwheels or experiencing any lags. Anyone with 11,4 2015 should feel this is doable is the takeaway I've learned.
 
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Lots of misinformation related to SIP. I intended to add a FAQ regarding this for quite a while. In fact, I'm in the middle of preparing one but then I realize I have to go through quite a bit hassle for fact-check. So may I just borrow you to do this for me and others. Here is my test request:

For people running High Sierra, Mojave, Catalina, or Big Sur, once you confirm ssdpmEnabler working (as per my Guide), re-enable SIP, reboot and then check again to see if ssdpmEnabler is still loaded and working.

Report your results here please.



Crucial P2 does not appear to be as good as before because folks reported new batches (since around May 2021) come with QLC chips (i.e. very slow sustained write speed) instead of TLC. Check out the last 10 or 20 pages for details.

To everyone, I also added two more FAQ related to ssdpmEnabler (or not):

2. How to get the best experience out of replacement SSDs?

3. Why are MacBookAir6,2 and MacBookPro11,1 not supported?

Thanks for this!
I better return the Samsung Evo Plus immediately or else my macbook air 6,2 will not live well.

I wish I had your knowledge instead of spending hours reading on other's experience and find myself back in the start of it. ~ MacBook Air 6,2 and 11,1 not being supported should be updated to the first post. I am too newbie here to do that...
And now, to find a power efficient ssd drive! Uh...
 
Lots of misinformation related to SIP. I intended to add a FAQ regarding this for quite a while. In fact, I'm in the middle of preparing one but then I realize I have to go through quite a bit hassle for fact-check. So may I just borrow you to do this for me and others. Here is my test request:

For people running High Sierra, Mojave, Catalina, or Big Sur, once you confirm ssdpmEnabler working (as per my Guide), re-enable SIP, reboot and then check again to see if ssdpmEnabler is still loaded and working.

Report your results here please.



Crucial P2 does not appear to be as good as before because folks reported new batches (since around May 2021) come with QLC chips (i.e. very slow sustained write speed) instead of TLC. Check out the last 10 or 20 pages for details.

To everyone, I also added two more FAQ related to ssdpmEnabler (or not):

2. How to get the best experience out of replacement SSDs?

3. Why are MacBookAir6,2 and MacBookPro11,1 not supported?

Hi kvic, so I've checked it out and I can report that ssdpmEnabler works with SIP disabled but does not work with SIP re-enabled (ssdpmEnabler won't be loaded then).
MacBookPro11,3
Boot-ROM-Version: 431.0.0.0.0
MacOS 10.13.6
SSD: Crucial P2 CT2000P2SSD8 (2TB)
 
Last edited:
Well, after almost two years of reading, lurking, and asking dumb questions I finally pulled the trigger and installed a new SSD in my 11,4 2015 15-incher. (Why this thread doesn't also include 2015s always had me scratching my head, lol.)

This is my own experience, and certainly not a guide. I am the last person you want to use as a poster child for doing anything! But, I will say that this thread, the people who help others on this website, are deserving of all the credit.

If you are too busy to read all 364 pages of posts, don't feel bad. I have been here countless times and could never read them all. I have read a lot of posts, but not even close to half, even a third. And, much of the content here is just too heady for me, to be honest. So, a dummy gave this a whirl. Here's how it went. (I'm editorializing to embellish for those who might benefit from my babble.)

1. I waited for my AppleCare to expire in April before undertaking this task.
2. The actual removal and replacement took 10 minutes. Getting the SSD, the Sintech adapter, the screwdrivers took more time than that!
3. I am terrible at file management. I have been reading Lloyd Chambers' macperformanceguide.com blog for what feels like nearly 10 years, I even paid him, and bought OWC RAID 5 set-ups, you name it, I stink at file management! (I'm too busy editing my own crappy photos, running my two very small gig like businesses into the ground, writing my own garbage copy, etc. I haven't the time to be an IT expert, but we have to try, right? This forum, and all of the others like it, are worthy of your attention. Read the first page. I have read it at least 20 times, and while I wish it had some things to make me feel better, nobody is getting paid to post here, so Lord I'm just thankful it is there at all. In a nutshell: This upgrade is a lifesaver for me. If it works over the long haul (a couple of years on this 6-year-old box would be nice), until I can get the 2nd or 3rd iteration of the newer 16" M silicone, will be awesome.
4. Here are the photos of my little swap, and with a bit of dialogue to explain what I did. Very lay person terminology. Here goes!

a) This is the SSD and Sintech adaptor. My machine is 11,4. I could not find anything here saying it has hibernation issues, so was hopeful. I bought these months ago. It has taken me a long time to get up the nerve to do this as I only have one working machine. My old work iMac is still... screen dead.

View attachment 1799896

Here is the screw driver set I got on Amazon.com. It has all sorts of heads, and can be useful for a lot of things! There are two different sized screws for the "job", 10 are on the back cover, one holds in the drive and is slightly smaller. They are star patterned bits. This kit had all I needed.



View attachment 1799897

Obviously, a back-up was required. This is a Lacie I have had for years. It used to have a HDD, but I threw in a 1TB SSD some time ago, maybe a year or more. I had partitioned it for TM and data, but the TM maxed out. I was unable to use it! I spent a day offloading files onto slower portable HDDS just to reformat it so I could do a. TM for this swap. A royal PITA, but when I did the TM somehow I went from 6GB left on my stock 250GB SSD to 64GB! I have no idea how or why, but used the space to upgrade to Big Sur, which I thought might make the recovery smoother.

View attachment 1799898

I use a hard shell cover and have never taken it off except for one AC repair and they removed the cover. The replaced the screen. What I found shocking was how dirty the shell is/was, and how scratched too.

View attachment 1799899

Look at how terribly scratched the screw areas are! I got my AC work done via Apple's site, but they (Apple) sent me to a third party vendor where I live.

View attachment 1799907

One screw, aide from the 10 on the back shell cover, and done deal!

View attachment 1799900

I tried to restore from my TM back-up. but that didn't work. Aduit13 was spot on you have to install the OS from the web. The TM drive did not show without doing an Internet recovery to Mojave, so a downgrade from Big Sur. Kinda wonky but no big deal.

View attachment 1799909

My computer was back to life! And, it prompted me to upgrade to Big Sur, which I did, and will probably regret, since I have yet to do a search here in the thread about Big Sur's problems lol.

View attachment 1799917

I am typing this on my machine after the swap. The most time consuming part of this was getting my data properly backed up, and doing the recover and updates, which involved little more than a few mouse clicks. The laptop bottom is hot. Always was. I do not hear the fans yet. They will probably come eventually.

If you are afraid to do this, but have a machine like mine, e.g., 11,4, and have a few hours, this is (so far) a massive improvement. I now have 1.8TB of space!!

Thanks to all here who post.
You should have cleaned up the inside of that thing when you had it open... Those fan blades were covered with dust/lint. That would cause it to not cool like it should..
 
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I have a 2012 a1398 MBP 16gb ram and a 1tb NVMe ssd with adapter to 7+17 pings, zero problems…that is until i swipe the drive which removes the efi firmware support for ssd.

i don’t understand why this thread claims only macs after 2013 can work with NVMe mkey ssd, there is no issue for older macs to support NVMe PCIes, in fact generic NVMe PCIe mkey ssd work as well.,

when shopping for generic NVMe Mkey ssds with the 7+17 or other apple proprietary adapters you will see messages like this on the adverts;
When you select to install this SSD, Update Mac host to macOS 10.13 High Sierra (10.14 Mojave / 10.15 Catalina / Big Sur 11.0.1).

Why should update Mac before taking off the old SSD?

—> Because if the EFI firmware (on Mac's motherboard) is too old, it can not support new PCIe Gen 3x4 <——


so why do ppl run into problems all narrows down to Apple removing efi firmware support during updates, mainly so you buy newer products.

solution is to Reinstall the efi firmware then upgrade back to catalina, either from a usb key or recovery mode to reinstall original system that came with your machine, bit recovery mode can be tricky sometimes as well., usb key all the way ..
 
I believe the thread title and common Mac models discussed in this thread are just 'accidental'. It seems some 2012 models also came with a proprietary PCIe connector for the SSD. So as long as someone makes and sells an adaptor, you could attach a modern NVMe SSD. Seems same applies to some 2016 and 2017 models as well.

Do you have details of the SSD connection of your 2012 MBP? How many PCIe lanes you see in System Information? I'm guessing it's two-lane PCIe 2.0.

Do you happen to have tried ssdpmEnabler? Does it work? Does it help? A report like this post will be nice. Perhaps you could attract fellow memebers to do the same on their 2012 MBP's. @FatLip
 
I believe the thread title and common Mac models discussed in this thread are just 'accidental'. It seems some 2012 models also came with a proprietary PCIe connector for the SSD. So as long as someone makes and sells an adaptor, you could attach a modern NVMe SSD. Seems same applies to some 2016 and 2017 models as well.

Do you have details of the SSD connection of your 2012 MBP? How many PCIe lanes you see in System Information? I'm guessing it's two-lane PCIe 2.0.

Do you happen to have tried ssdpmEnabler? Does it work? Does it help? A report like this post will be nice. Perhaps you could attract fellow memebers to do the same on their 2012 MBP's. @FatLip
Its simpler then you put it,
Apple genius bar advised i go to this site and find the efi firmware that came with my mac or download the original system that came with the mbp


Example my mbp id is:
MacBook Pro (Retina, Mid 2012)MacBookPro10,1MBP101.00EE.B0A (2015-002)2.3f36 (SMC 1.2)

With out the proper EFI your SSD will not be recognize, Apple updates are mostly if not 95% omissions of firmware versions to block support for 3rd party parts and or accessories etc, its why your BT mouse etc stops working after an update.

so for example many people have ext ssd/hd etc, the first time they upgraded to Catalina they experienced major issues like the black blue whatever screen, the no system icon, issues with recovery online due to firmware support replace by apple and now their motherboards etc are no longer supported so they are forced to bring the device etc to a Apple store, reformat the drive, work from external drive or simply buy a new one and start over., its unfair none of this i to was made clear and we all know why but learn to deal with it.
 
Last edited:
It was recently discovered that TRIM is broken out of the box with many Samsung NVMEs under macOS. Please see: https://github.com/dortania/bugtracker/issues/192

I was surprised to see this given that Samsung used to be an OEM drive supplier for Apple at one point, but clearly their current retail drives are using different controllers/firmware. Drives with Phison and SMI controllers as well as WD drives appear to be behaving correctly out of the box with macOS TRIM. Someone may want to update the first post with the drive recommendations to reflect this.

Also, as @isleeptill12 mentioned, the SK Hynix P31 now boots under macOS with the latest firmware, which is version 41062C20. It's still listed as broken in the github bugtracker issue above probably because its TRIM behavior has not been tested.
 
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Hi everyone, I have read the first page and I think I know what I need to upgrade to SSD, but I want to make sure that what I am doing is correct and it's up-to-date. I am running a mid 2014 Macbook Pro Retina 13".

I would need to get:
1. SINTECH adapter (http://eshop.sintech.cn/index.php?main_page=product_info&products_id=1139), anyone bought from their site before?
2. SSD. I am looking to get a Samsung EVO 960/970 Evo/970 Pro/970 Evo plus since they seem to be the most widely available. (which one is good?) Or are there cheaper & better recommendations?
3. Screwdriver tools

Before installing the SSD, I need to backup my data using SuperDuper! Do I need to download the macOS installation on an external flash drive?

I also need to ensure that the SINTECH adapter comes with an insulation tape before installation?
After installation I would need to fix the deep sleep issue by disabling hibernation.

Am I getting it right? Thank you guys.
 
Last edited:
Its simpler then you put it,
Apple genius bar advised i go to this site and find the efi firmware that came with my mac or download the original system that came with the mbp


Example my mbp id is:
MacBook Pro (Retina, Mid 2012)MacBookPro10,1MBP101.00EE.B0A (2015-002)2.3f36 (SMC 1.2)

With out the proper EFI your SSD will not be recognize, Apple updates are mostly if not 95% omissions of firmware versions to block support for 3rd party parts and or accessories etc, its why your BT mouse etc stops working after an update.

so for example many people have ext ssd/hd etc, the first time they upgraded to Catalina they experienced major issues like the black blue whatever screen, the no system icon, issues with recovery online due to firmware support replace by apple and now their motherboards etc are no longer supported so they are forced to bring the device etc to a Apple store, reformat the drive, work from external drive or simply buy a new one and start over., its unfair none of this i to was made clear and we all know why but learn to deal with it.
Hi, the firmware listed on that Apple page is outdated, as the warning banner on the website says.
The actual versions are only distributed through the MacOS updates. That is Mojave (10.14), Catalina (10.15) and Big Sur (11).
No matter which of these latest updates you install: It will update your bootrom to the latest version, which will enable NVMe support.
I think the latest version as of today is Boot-ROM-Version: 431.0.0.0.0
 
A question to kvic, the developer of SsdPmEnabler.kext !

Shouldn't it be possible you get your kext signed by another developer who is paying Apple's fees?

I'm thinking of OWC which are selling their own SSD upgrade and should have an interest in an officially acknowledged power saving solution.

For quite a while I am using the excellent SAT SMART driver and the developper is supported by the company behind DriveDX.
So I thought maybe this support model could work for you too. No need to disable SIP then.
 
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At the bottom of this page: https://ssd.skhynix.com/GoldP31_en.html

Download the drive manager and the firmware of the size drive you have.

Here are the instructions: https://ssd.skhynix.com/download/firmware/SKhynix_Firmware Update Utility Manual_EN_Final.pdf
Thanks isleeptill12, updating Hynix P31-gold thru external didn't work, needs NVMe slot in PC to work with Drive manager (PC only) unfortunately, its not documented with its Mac support firmware update but its worth the wait, i have purchased this drive when it came out last sept 2020 due to its advertised high performance and has very low active idle power consumption, very well indeed worth the wait. its now my daily driver, results taken from Monterey beta 2, latest Lilu + Nvmefix monterey support was used.

Screen Shot 2021-07-14 at 6.28.25 AM.png
 
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A question to kvic, the developer of SsdPmEnabler.kext !

Shouldn't it be possible you get your kext signed by another developer who is paying Apple's fees?

I'm thinking of OWC which are selling their own SSD upgrade and should have an interest in an officially acknowledged power saving solution.

For quite a while I am using the excellent SAT SMART driver and the developper is supported by the company behind DriveDX.
So I thought maybe this support model could work for you too. No need to disable SIP then.

Apple has deprecated KEXT support and is proactively moving 3rd-parties to DriverKit. I seriously doubt that Apple would sign any 3rd-party KEXTs in 2020s. Bigger players like Belkin, OWC.. may have some bargaining power but in this case I doubt they won't be able to get it signed.

Thanks to your last check, I went ahead to publish the FAQ on debunking the myth of "disable SIP" In the process, I found High Sierra is actually similar to Mojave and later versions in that you only have to disable "kext signing" of the SIP. You don't have to disable SIP completely like my original Guide suggested. You may want to check out my revised Installation Guide, and the FAQ: 4. Is my Mac less secure with 'SIP disabled'
 
Thank you, very interesting.
A suggestion for your installation guide:
Instead of "Type the following lines one by one," you could write "Open Safari and google ssdpmEnabler on Github, then open this website, then copy and paste this text into Terminal."
On the subject of loading kexts, I also found these tips, which seem to offer another path to yours:
What do you think about that?
 
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