Upgrading 2013-2015 Macbook Pro SSD to M.2 NVMe

[Audit13]

And nothing changed in terms of hibernate support right?

For the 2017 (HP ex900, battery at 94%) and 2015 Air (Intel 660p, battery at 92%), I booted them and then closed the lid around 10:00 PM. I then opened the lid to each machine and both booted without issue.

The battery for the 2017 Air was still at 94%.

Battery for the 2015 Air was at 91% probably due to not entering deep hibernation.

 

[liberace]

"K03P04E461RL" is a power controller chip,not bootrom chip.

thanks, man
now I recognize my fault the bootrom chip is downside on logic board, not on top
and can somebody explain it is possible to flash disconnected logic board by ch341a+SOIC/SOP8 clip? because somebody says that they connect battery and MagSafe to help ch341a to recognize the chip when they went by the way with J6100 adapter and ch341a

 

[dr_of_tarts]

My experience...

I have a MacBook Pro (Retina, 15-inch, Late 2013, MacBookPro11,3, Core i7 2.3 GHz) with Apple 512GB SSD SM0512F (I must have been feeling rich when I bought this back in 2013!). My wife has a MacBook Air (13", Early 2014) with Apple 128GB SSD. I decided I'd update the SSD in my MBP, move my 512GB SSD to her MBA (she's always running out of space), and use the 128GB SSD for firmware updates as (or if) new versions become available.

I wanted a balance of speed, capacity, heat and power usage. I bought the short black Sintech adapter through Amazon https://www.amazon.co.uk/gp/product/B07FYY3H5F/ for £12.59 and a Sabrent 1TB Rocket through Amazon https://www.amazon.co.uk/gp/product/B07LGF54XR/ £129.99. The Sintech adapter was delivered within 7 days (from China, Amazon said a month for delivery), and the Sabrent arrived in 4 days (from USA).

My steps:

1. Made 3 backups of MBP (running Sierra) - 2 Time machine backups (one to Synology NAS, one to USB HDD), 1 Carbon Copy Cloner bootable image on seperate USB HDD
2. Downloaded latest Mojave installer (10.14.5), made bootable USB stick
3. Booted from Mojave installer, erased Apple SSD, installed Mojave; boot ROM updated from 150.0.0.0.0 to 153.0.0.0.0
4. Downloaded and ran BlackMagic Disk Speed test and AmorphousDiskMark (see below)
5. Removed Apple SSD, installed Sintech adapter and Sabrent SSD, cleaned fans and radiators while it was open!
6. Booted, SMC reset, NVRAM reset, boot from Mojave installer, formatted (APFS) and installed Mojave on Sabrent (went without a hitch)
7. Downloaded and ran BlackMagic Disk Speed test and AmorphousDiskMark (see below)
8. Booted from Mojave installer again, erased SSD, reinstalled Mojave, migrated account, applications and documents from CCC image.

That's where I'm at at the moment. Most things seem to work, though I'm still entering passwords and getting messages about 32-bit apps! I haven't messed about with hibernation yet; this Mac mostly sits on my desk, plugged into power, and sleeps rather than hibernates. I'll see if I have issues with it before changing settings.

I'll retest the Sabrent with BlackMagic and Amorphous when I get the chance, now I've migrated data onto it. I wanted to do tests with a clean install and simple account set up, just to check speed. These have been pretty positive; it seems I've got Link Width x4 and Link Speed of 5.0 GT/s, which I'm guessing is PCIe 2.0 4x. Sabrent 'revision' is 'ECFM12.2', so seems to be the latest Phison E12 12.2 firmware. Speeds on the Apple SSD actually seemed to improve moving to Mojave from Sierra; APFS perhaps? Sabrent seems to be roughly 65-90% faster than the Apple SSD.

If someone can point to the post that explains how to get power consumption figures, I'm happy to do that, too.

 

[djangoreinhardt442]

My experience...

I have a MacBook Pro (Retina, 15-inch, Late 2013, MacBookPro11,3, Core i7 2.3 GHz) with Apple 512GB SSD SM0512F (I must have been feeling rich when I bought this back in 2013!). My wife has a MacBook Air (13", Early 2014) with Apple 128GB SSD. I decided I'd update the SSD in my MBP, move my 512GB SSD to her MBA (she's always running out of space), and use the 128GB SSD for firmware updates as (or if) new versions become available.

I wanted a balance of speed, capacity, heat and power usage. I bought the short black Sintech adapter through Amazon https://www.amazon.co.uk/gp/product/B07FYY3H5F/ for £12.59 and a Sabrent 1TB Rocket through Amazon https://www.amazon.co.uk/gp/product/B07LGF54XR/ £129.99. The Sintech adapter was delivered within 7 days (from China, Amazon said a month for delivery), and the Sabrent arrived in 4 days (from USA).

My steps:

1. Made 3 backups of MBP (running Sierra) - 2 Time machine backups (one to Synology NAS, one to USB HDD), 1 Carbon Copy Cloner bootable image on seperate USB HDD
2. Downloaded latest Mojave installer (10.14.5), made bootable USB stick
3. Booted from Mojave installer, erased Apple SSD, installed Mojave; boot ROM updated from 150.0.0.0.0 to 153.0.0.0.0
4. Downloaded and ran BlackMagic Disk Speed test and AmorphousDiskMark (see below)
5. Removed Apple SSD, installed Sintech adapter and Sabrent SSD, cleaned fans and radiators while it was open!
6. Booted, SMC reset, NVRAM reset, boot from Mojave installer, formatted (APFS) and installed Mojave on Sabrent (went without a hitch)
7. Downloaded and ran BlackMagic Disk Speed test and AmorphousDiskMark (see below)
8. Booted from Mojave installer again, erased SSD, reinstalled Mojave, migrated account, applications and documents from CCC image.

That's where I'm at at the moment. Most things seem to work, though I'm still entering passwords and getting messages about 32-bit apps! I haven't messed about with hibernation yet; this Mac mostly sits on my desk, plugged into power, and sleeps rather than hibernates. I'll see if I have issues with it before changing settings.

I'll retest the Sabrent with BlackMagic and Amorphous when I get the chance, now I've migrated data onto it. I wanted to do tests with a clean install and simple account set up, just to check speed. These have been pretty positive; it seems I've got Link Width x4 and Link Speed of 5.0 GT/s, which I'm guessing is PCIe 2.0 4x. Sabrent 'revision' is 'ECFM12.2', so seems to be the latest Phison E12 12.2 firmware. Speeds on the Apple SSD actually seemed to improve moving to Mojave from Sierra; APFS perhaps? Sabrent seems to be roughly 65-90% faster than the Apple SSD.

If someone can point to the post that explains how to get power consumption figures, I'm happy to do that, too.

View attachment 837241 View attachment 837242 View attachment 837243 View attachment 837244 View attachment 837245

Congrats!

Search gilles_polysoft posts.
It was somewhere between page 158 and 170
He explains how he did it.
It was in a reply to another poster.

Let me see if I can find it

Your speeds are excellent. You have basically saturated your pcie 2.0x4 link.
[doublepost=1557969914][/doublepost]

My experience...

I have a MacBook Pro (Retina, 15-inch, Late 2013, MacBookPro11,3, Core i7 2.3 GHz) with Apple 512GB SSD SM0512F (I must have been feeling rich when I bought this back in 2013!). My wife has a MacBook Air (13", Early 2014) with Apple 128GB SSD. I decided I'd update the SSD in my MBP, move my 512GB SSD to her MBA (she's always running out of space), and use the 128GB SSD for firmware updates as (or if) new versions become available.

I wanted a balance of speed, capacity, heat and power usage. I bought the short black Sintech adapter through Amazon https://www.amazon.co.uk/gp/product/B07FYY3H5F/ for £12.59 and a Sabrent 1TB Rocket through Amazon https://www.amazon.co.uk/gp/product/B07LGF54XR/ £129.99. The Sintech adapter was delivered within 7 days (from China, Amazon said a month for delivery), and the Sabrent arrived in 4 days (from USA).

My steps:

1. Made 3 backups of MBP (running Sierra) - 2 Time machine backups (one to Synology NAS, one to USB HDD), 1 Carbon Copy Cloner bootable image on seperate USB HDD
2. Downloaded latest Mojave installer (10.14.5), made bootable USB stick
3. Booted from Mojave installer, erased Apple SSD, installed Mojave; boot ROM updated from 150.0.0.0.0 to 153.0.0.0.0
4. Downloaded and ran BlackMagic Disk Speed test and AmorphousDiskMark (see below)
5. Removed Apple SSD, installed Sintech adapter and Sabrent SSD, cleaned fans and radiators while it was open!
6. Booted, SMC reset, NVRAM reset, boot from Mojave installer, formatted (APFS) and installed Mojave on Sabrent (went without a hitch)
7. Downloaded and ran BlackMagic Disk Speed test and AmorphousDiskMark (see below)
8. Booted from Mojave installer again, erased SSD, reinstalled Mojave, migrated account, applications and documents from CCC image.

That's where I'm at at the moment. Most things seem to work, though I'm still entering passwords and getting messages about 32-bit apps! I haven't messed about with hibernation yet; this Mac mostly sits on my desk, plugged into power, and sleeps rather than hibernates. I'll see if I have issues with it before changing settings.

I'll retest the Sabrent with BlackMagic and Amorphous when I get the chance, now I've migrated data onto it. I wanted to do tests with a clean install and simple account set up, just to check speed. These have been pretty positive; it seems I've got Link Width x4 and Link Speed of 5.0 GT/s, which I'm guessing is PCIe 2.0 4x. Sabrent 'revision' is 'ECFM12.2', so seems to be the latest Phison E12 12.2 firmware. Speeds on the Apple SSD actually seemed to improve moving to Mojave from Sierra; APFS perhaps? Sabrent seems to be roughly 65-90% faster than the Apple SSD.

If someone can point to the post that explains how to get power consumption figures, I'm happy to do that, too.

View attachment 837241 View attachment 837242 View attachment 837243 View attachment 837244 View attachment 837245

Found post

Page 158
Post dated April 11,2019

Towards bottom of page
iStat menu....he explains it all

 

[liberace]

Connect J6100 to CH341A(25 spi) with adapter.
Connect battery and magsafe.
Press and hold the power button for 1 second and release.
Press and hold the power button for 10+ seconds.
Open progeammer software,detect chip.

Ty,
if i dont have yet j6100 should i and how to do with soic/sop8 clip if i have to disassembly logic board to reach a chip from downside

 

[liberace]

Maybe in MBP 2014, bootrom is not a sop8 chip, you need a wson8 to dip8 adapter.

there is a way that one guy on top did with some clip and ch341a without soldering with the same mbp but his chip located on face side of logic board
how it is possible to be different located chips on the same model?

 

[Macbookproa1502]

I have macbook pro 13" early 2015 A1502 with 128gb apple ssd, i want to upgrade SSD to nvme drive. My model controller is PCIe 2.0x4 5GT/s so max speed i could get is 2GBps. As i live outside US i have only few options for the shipping from amazon,
1. Intel 660p 1TB
2. Crucial P1 1TB
3. HP EX920 1TB
4. WD black 512GB
5. XPG adata sx8200 pro( doesnt ship to my location)

I dont want to spend more bucks on high performance drives like 970 evo 970 pro..etc as there is bottleneck in the model with only pcie 2.0 so i will not achieve the speeds.

I wanted to use Sinetech black long adapter.

Please suggest me which drive would be suitable for me for moderate home use.
Thanks in advance.

*******UPDATE********** 26.5.19

I have ordered Sabrent Rocket 512gb SSD, I have installed ssd with Sintech black long adapter.
installation process and installing Mojave seems everything ok. till now no sleep issues, no power drain issues, nor no temperature issues.
only one thing I could notice is the speed test seems to be little upset, write 600MB/s and Read 1300MB/s, seems read speed is ok as it is PCIe 2.0. but the write speed is low. please suggest anything to be done.

 

[defektion]

I had the 512GB Intel 660p in my 2014 rMBP with a Sintech short adapter. It worked flawlessly without issues but I wanted more space so I ended up buying a 1TB HP EX950 while still using the short adapter. Performed better than the 660P and I have more space now. I can't speak for the long adapter but the short adapter provides better clearance for double-sided NVME's.

 

[jackqueenking]

I have macbook pro 13" early 2015 A1502 with 128gb apple ssd, i want to upgrade SSD to nvme drive. My model controller is PCIe 2.0x4 5GT/s so max speed i could get is 2GBps. As i live outside US i have only few options for the shipping from amazon,
1. Intel 660p 1TB
2. Crucial P1 1TB
3. HP EX920 1TB
4. WD black 512GB
5. XPG adata sx8200 pro( doesnt ship to my location)

I dont want to spend more bucks on high performance drives like 970 evo 970 pro..etc as there is bottleneck in the model with only pcie 2.0 so i will not achieve the speeds.

I wanted to use Sinetech black long adapter.

Please suggest me which drive would be suitable for me for moderate home use.
Thanks in advance.

According to Gilles Polysoft the QLC drives consume more power than other drives when performing data operations even if they're rated for lower power consumptions, as such a 512GB Intel 760p would be better than a Intel 660p. I have one in my 2014 MBP and getting about 5h30 mins of battery and 1550 MB/s read. The Sabrent or EX920 would also be good choices. If Sabrent or Intel 760p isn't shipping to your country then EX920 is the way to go.

Although I get your reasoning of not wanting to spend more money on a better drive because of the bottleneck on PCIe 2.0 it might be worth the investment since you will get more out of it than just speed.

If you have enough budget for a TLC drive then there's no real reason to go QLC unless someone here has done a comparison on performance/battery life of something like a 660p vs 760p or vs an EX920...
[doublepost=1558020954][/doublepost]

I had the 512GB Intel 660p in my 2014 rMBP with a Sintech short adapter. It worked flawlessly without issues but I wanted more space so I ended up buying a 1TB HP EX950 while still using the short adapter. Performed better than the 660P and I have more space now. I can't speak for the long adapter but the short adapter provides better clearance for double-sided NVME's.

What's your observation on battery life? Is there a difference between the 2 drives?

 

[1146331]

there is a way that one guy on top did with some clip and ch341a without soldering with the same mbp but his chip located on face side of logic board
how it is possible to be different located chips on the same model?

Mid vs early 2014, or 13" vs 15".

 

[x34]

I have macbook pro 13" early 2015 A1502 with 128gb apple ssd, i want to upgrade SSD to nvme drive. My model controller is PCIe 2.0x4 5GT/s so max speed i could get is 2GBps. As i live outside US i have only few options for the shipping from amazon,
1. Intel 660p 1TB
2. Crucial P1 1TB
3. HP EX920 1TB
4. WD black 512GB
5. XPG adata sx8200 pro( doesnt ship to my location)

I dont want to spend more bucks on high performance drives like 970 evo 970 pro..etc as there is bottleneck in the model with only pcie 2.0 so i will not achieve the speeds.

I wanted to use Sinetech black long adapter.

Please suggest me which drive would be suitable for me for moderate home use.
Thanks in advance.

got the crucial p1 tb in a MBP, zero problems and battery times are excellent.

 

[Macbookproa1502]

According to Gilles Polysoft the QLC drives consume more power than other drives when performing data operations even if they're rated for lower power consumptions, as such a 512GB Intel 760p would be better than a Intel 660p. I have one in my 2014 MBP and getting about 5h30 mins of battery and 1550 MB/s read. The Sabrent or EX920 would also be good choices. If Sabrent or Intel 760p isn't shipping to your country then EX920 is the way to go.

Although I get your reasoning of not wanting to spend more money on a better drive because of the bottleneck on PCIe 2.0 it might be worth the investment since you will get more out of it than just speed.

If you have enough budget for a TLC drive then there's no real reason to go QLC unless someone here has done a comparison on performance/battery life of something like a 660p vs 760p or vs an EX920...
[doublepost=1558020954][/doublepost]
What's your observation on battery life? Is there a difference between the 2 drives?

Thanks for the info,
I am aware of the QLC drives limitations and may be that is the reason they are much cheaper. And regarding HPex920 it is TLC based and speed and writes are good enough but i dont know why there is no support for the HP SSDs. Regarding sabrent i have seen this in the table and it scores way better than all other nvmes, and even it can be shipped to my location, but there is no much value for the brand name and moreover i could not even find this name in ssdbenchmarks.com. so i doubt if this brand can be trusted.
[doublepost=1558033843][/doublepost]

got the crucial p1 tb in a MBP, zero problems and battery times are excellent.

Do you experience any sleep problems, crashes with p1?
[doublepost=1558033984][/doublepost]

I had the 512GB Intel 660p in my 2014 rMBP with a Sintech short adapter. It worked flawlessly without issues but I wanted more space so I ended up buying a 1TB HP EX950 while still using the short adapter. Performed better than the 660P and I have more space now. I can't speak for the long adapter but the short adapter provides better clearance for double-sided NVME's.

Thanks for the info,
I have checked with the sintech adapter representative and as per his info the longer sintech has less changes for problems.

 

[Colin0317]

Does the MacBook hibernate when on ac power? I use mine plugged in almost exclusively.

Also, will hibernate mode 3 work after the upgrade? I really don't like the idea of having to shut down the computer after each use...

 

[djangoreinhardt442]

amazon is running a sale on Sabrent Rocket SSDs in the US.
this is via Slickdeals.net

Store4pc via Amazon.com have the following Sabrent SSD Lines on sale:

Sabrent Rocket NVMe PCIe M.2 2280 Internal SSD High Performance Solid State Drives:

• Sabrent SB-ROCKET-256 256GB Rocket Nvme PCIe M.2 2280 Internal SSD High Performance Solid State Drive [amazon.com] at $44.94 - 11% OFF with promo code 1131B778 = $39.99
• Sabrent SB-ROCKET-512 512GB Rocket Nvme PCIe M.2 2280 Internal SSD High Performance Solid State Drive [amazon.com]at $74.99 - 12% OFF with promo code 12HFT7HA = $65.99
• Sabrent 1TB Rocket NVMe PCIe M.2 2280 Internal SSD High Performance Solid State Drive (SB-ROCKET-1TB) [amazon.com] at $133.71 - 14% OFF with promo code 153EBNHY = $114.99
• Sabrent 2TB Rocket NVMe PCIe M.2 2280 Internal SSD High Performance Solid State Drive (SB-ROCKET-2TB [amazon.com]) [amazon.com] at $298.85 - 13% OFF with promo code 13BDRYQA = $259.99

 

[codetrick]

I stumbled upon this interesting blog post from Librem. They were working on getting coreboot to work with nvme SSDs on their Librem laptop and encountered similar low-power state issues like those seen in 2013-2014 Macbooks here in this thread.

In short, in their tests the nvme drive would enter what is known as L1.2 PCIe state and fail to exit this state. Their fix is to disable the L1.2 state in the firmware (coreboot).

I know that (to just disable L1.2 without changing anything else) is probably impossible without deassembly of Apple's bootrom, if we want to apply it to Macbooks. In any case, the bootrom patching method that has been widely discussed here seems to work reasonably well. However this might offer some ideas for getting the currently unsupported nvme drives to work, or to gain some insights into the various kernel panics that have been reported in this thread?

 

[tgd85]

Many thanks to everyone who has contributed to this thread. Incredibly helpful. I was able to get all of the information I needed to successfully upgrade my mid 2014 13" rMBP with a new NVMe SSD drive.

No issues since the upgrade, following the guidance from everyone here. I haven't experienced any sleep / hibernation issues using the default settings, and I've been able to wake from sleep every time when connected to a Thunderbolt Display and an Apple Mouse / Keyboard. No issues waking when left overnight and not connected to external power source.

I purchased the short black Sintech adapter from Sintech's store on Amazon. I opted for the Samsung 970 PRO 512GB, and haven't noticed a significant power drain up until this point. I upgraded to Mojave using the Apple OEM drive to update the bootrom before swapping out the drives and doing a clean install via USB installer. No issues formatting the new drive to APFS and no issues with the OS X installation.

Currently running 10.5.4 on bootrom 151. Will likely delay updating to 10.5.5 in order to avoid any issues related to updating the bootrom, though I've seen some comments suggesting the recent update didn't cause any issues.

 

[defektion]

According to Gilles Polysoft the QLC drives consume more power than other drives when performing data operations even if they're rated for lower power consumptions, as such a 512GB Intel 760p would be better than a Intel 660p. I have one in my 2014 MBP and getting about 5h30 mins of battery and 1550 MB/s read. The Sabrent or EX920 would also be good choices. If Sabrent or Intel 760p isn't shipping to your country then EX920 is the way to go.

Although I get your reasoning of not wanting to spend more money on a better drive because of the bottleneck on PCIe 2.0 it might be worth the investment since you will get more out of it than just speed.

If you have enough budget for a TLC drive then there's no real reason to go QLC unless someone here has done a comparison on performance/battery life of something like a 660p vs 760p or vs an EX920...
[doublepost=1558020954][/doublepost]
What's your observation on battery life? Is there a difference between the 2 drives?

The EX950 does drain a bit quicker but my battery design capacity is now at 80%. So probably not the best.

 

[ondrejz]

amazon is running a sale on Sabrent Rocket SSDs in the US.
this is via Slickdeals.net

Store4pc via Amazon.com have the following Sabrent SSD Lines on sale:

Sabrent Rocket NVMe PCIe M.2 2280 Internal SSD High Performance Solid State Drives:

• Sabrent SB-ROCKET-256 256GB Rocket Nvme PCIe M.2 2280 Internal SSD High Performance Solid State Drive [amazon.com] at $44.94 - 11% OFF with promo code 1131B778 = $39.99
• Sabrent SB-ROCKET-512 512GB Rocket Nvme PCIe M.2 2280 Internal SSD High Performance Solid State Drive [amazon.com]at $74.99 - 12% OFF with promo code 12HFT7HA = $65.99
• Sabrent 1TB Rocket NVMe PCIe M.2 2280 Internal SSD High Performance Solid State Drive (SB-ROCKET-1TB) [amazon.com] at $133.71 - 14% OFF with promo code 153EBNHY = $114.99
• Sabrent 2TB Rocket NVMe PCIe M.2 2280 Internal SSD High Performance Solid State Drive (SB-ROCKET-2TB [amazon.com]) [amazon.com] at $298.85 - 13% OFF with promo code 13BDRYQA = $259.99

Cheers, thanks for that!

970 Evo was killing my battery so went with the 1TB Rocket and will throw this guy in an enclosure.

 

[Chris.J]

Speaking of enclosures, I was hoping to use my Apple SSD as an external drive. Does such a thing even exist?

 

[Audit13]

Speaking of enclosures, I was hoping to use my Apple SSD as an external drive. Does such a thing even exist?

Enclosures for MacBook SSDs are not cheap: https://eshop.macsales.com/item/OWC/MAU3ENPRPCI/

 

[x34]

[doublepost=1558033843][/doublepost]Do you experience any sleep problems, crashes with p1?

i have a 2014 MBP, other problems: no, works fine.

 

[jackqueenking]

The EX950 does drain a bit quicker but my battery design capacity is now at 80%. So probably not the best.

Ah I see, thanks for the info. My 2014 is probably at about 90% and i get 5.5-6 hours of usage with a 760p

 

[mrwizardno2]

Upgraded my MacBook Pro (Retina, 15-inch, Mid 2015) to a 1TB Sabrent NVMe Drive using the long Sintech adapter. All works well! Thanks for the info!

Only thing I've noticed is since the latest updates, I haven't seen the boot rom increment. I'm still at Boot ROM Version: 189.0.0.0.0

Doesn't seem to cause an issue. Is there anything that says what changes between the versions? (Admitting I haven't scrolled back through the thread to look yet! Sorry if this comes across as lazy!)

 

[djangoreinhardt442]

Enclosures for MacBook SSDs are not cheap: https://eshop.macsales.com/item/OWC/MAU3ENPRPCI/

In theory, you should be able to use same sintech adapter in ANY (big enough) ssd external enclosure. I just bought a tb3 external enclosure off Amazon for 25 bucks.

Anyone else try this?
[doublepost=1558103067][/doublepost]

Upgraded my MacBook Pro (Retina, 15-inch, Mid 2015) to a 1TB Sabrent NVMe Drive using the long Sintech adapter. All works well! Thanks for the info!

Only thing I've noticed is since the latest updates, I haven't seen the boot rom increment. I'm still at Boot ROM Version: 189.0.0.0.0

Doesn't seem to cause an issue. Is there anything that says what changes between the versions? (Admitting I haven't scrolled back through the thread to look yet! Sorry if this comes across as lazy!)

No changes reported. But. Keep your original apple ssd so that you can do this in the future.

 

[Chris.J]

In theory, you should be able to use same sintech adapter in ANY (big enough) ssd external enclosure. I just bought a tb3 external enclosure off Amazon for 25 bucks.

Anyone else try this?

Surely the adapter would need to be a reverse gender version for an Apple SSD to work in a standard NVMe enclosure?
[doublepost=1558105277][/doublepost]

Upgraded my MacBook Pro (Retina, 15-inch, Mid 2015) to a 1TB Sabrent NVMe Drive using the long Sintech adapter. All works well! Thanks for the info!

Only thing I've noticed is since the latest updates, I haven't seen the boot rom increment. I'm still at Boot ROM Version: 189.0.0.0.0

Doesn't seem to cause an issue. Is there anything that says what changes between the versions? (Admitting I haven't scrolled back through the thread to look yet! Sorry if this comes across as lazy!)

I have exactly the same model as you, also with Sabrent 1TB. BootROM remains at 189 too. I'm going to leave it as it is until a major change is reported. Too lazy to open up the laptop again