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The tool to fix 840 Evo for Mac user is released

The 840 has a degradation issue that may be inherent in the EVO hardware design that may not ever get solved. Apparently not an issue with the 840 pro or any other Samsung model.
 
The performance issue for the 840 Evo is about the read speed, not write, and only affecting the old files (not benchmark). So I guess that his problem is nothing related to that flaw.

I am also running my Mac Pro with the 840 Evo (EXT0DB6Q), this firmware is very good at this moment. I test it by copy an old 3GB file to the RAM disk ( never touch this file from Sep 2014, except when running the performance restoration tool last time), very good speed, finish in 6s, so obviously no performance issue on reading old files. I also test this by copying few other old files, which was affected (around 20MB/s read speed) before upgrade to firmware EXT0CB6Q. And now, all of them doing 500MB/s. Blackmagic also shows consistent number around 500MB/s on both read and write speed.

Anyway, can you plug the 840 Evo into a native SATA 2 slot for testing purpose? If you can get a stable write speed at around 250MB/s, then most likely it's not the SSD's problem.
 
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I'm slightly confused. Does anyone know if I could take that "Samsung_SSD_840_EVO_EXT0DB6Q_Mac.iso" file and extract & copy it onto a USB-stick?

The only other alternative I have (since I have a Samsung SSD 840 EVO 1TB at Revision: EXT0BB6Q) is to take my Mid-2009 MacBookPro to a friend who has Windows - and then do.. exactly what?

I could take an ethernet cable or a firewire cable with me, but I'm not sure how to proceed.

Is there a Mac-only solution to this issue? I'm seeing that the 840 EVO one on the Samsung website says:

EXT0DB6Q - Supports Advanced Performance Optimization in Magician 4.6 - Apr. '15

but I'm not entirely sure how that's supposed to help me, since the Samsung Magician is Windows-only..
 
esaruoho said:
I'm slightly confused. Does anyone know if I could take that "Samsung_SSD_840_EVO_EXT0DB6Q_Mac.iso" file and extract & copy it onto a USB-stick?

Is there a Mac-only solution to this issue? I'm seeing that the 840 EVO one on the Samsung website says:

EXT0DB6Q - Supports Advanced Performance Optimization in Magician 4.6 - Apr. '15

but I'm not entirely sure how that's supposed to help me, since the Samsung Magician is Windows-only..
Click to expand...

1) No need to extract the ISO, and it will just make things more complicated. You can burn the ISO to a disk, and then boot from the disk. Or, make a bootable USB stick by that ISO.

2) Even though it's a Mac way to upgrade the SSD. This firmware still make the 840 Evo support the Advanced Performance Optimization in Magician 4.6. There is no Magician for OSX, however, the user may use bootcamp / or put the 840 Evo into a Windows machine later on. It's just make the SSD "support" that, doesn't mean it will make that "available" in OSX.
 
esaruoho said:
I'm slightly confused. Does anyone know if I could take that "Samsung_SSD_840_EVO_EXT0DB6Q_Mac.iso" file and extract & copy it onto a USB-stick?

The only other alternative I have (since I have a Samsung SSD 840 EVO 1TB at Revision: EXT0BB6Q) is to take my Mid-2009 MacBookPro to a friend who has Windows - and then do.. exactly what?

I could take an ethernet cable or a firewire cable with me, but I'm not sure how to proceed.

Is there a Mac-only solution to this issue? I'm seeing that the 840 EVO one on the Samsung website says:

EXT0DB6Q - Supports Advanced Performance Optimization in Magician 4.6 - Apr. '15

but I'm not entirely sure how that's supposed to help me, since the Samsung Magician is Windows-only..
Click to expand...

I just updated my two 840 EVO SSDs on a Mac Pro and a MacBook Pro...here's how:

- just burn the .iso content on a CD;
- boot the Mac and press the option key (alt);
- select the CD;
- it will run a firmware update program, just type Y (yes) when it asks to go ahead with the update;
- reboot...update done!

If your Mac doesn't have a cd/dvd drive, you need to plug and use a USB external one with this procedure.
And...let me know if it works! :)
 
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h9826790 said:
1) No need to extract the ISO, and it will just make things more complicated. You can burn the ISO to a disk, and then boot from the disk. Or, make a bootable USB stick by that ISO.
Click to expand...

Hi, I'm attempting to make a bootable USB stick. The ISO doesn't register properly unless if I rename it to a DMG. That's when Disk Utility seems to want to do something with it.

YzhVp32.jpg


I'm hoping this will work.

edit well, of course it didn't. the ISO doesn't register for USB sticks, the ISO could be burnt onto a CD-R, just that my SmartDrive doesn't handle a single CD :)
 
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I managed to get the software to boot no problem just burned the ISO to a disc.

Booted fine but the actual software itself failed on the drive it finished in about 1 minute giving the message Restoration failed.

Really frustrating. As above that is my benchmark atm.

Apparently I'm not the only one with write issues on yosemite with an 840 EVO.

http://www.reddit.com/r/apple/comments/2r6r8i/mac_ssd_sad_state_drive_in_yosemite_wow/

I have also run the command line fsck -fy with no benefit. Starting to run out of ideas apart from selling it and buying a drive with a Sandhurst controller.
 
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tomscott1988 said:
I managed to get the software to boot no problem just burned the ISO to a disc.

Booted fine but the actual software itself failed on the drive it finished in about 1 minute giving the message Restoration failed.

Really frustrating. As above that is my benchmark atm.

Apparently I'm not the only one with write issues on yosemite with an 840 EVO.

http://www.reddit.com/r/apple/comments/2r6r8i/mac_ssd_sad_state_drive_in_yosemite_wow/

I have also run the command line fsck -fy with no benefit. Starting to run out of ideas apart from selling it and buying a drive with a Sandhurst controller.
Click to expand...

Wow, that's quite bad. I assume the drive isn't near full and you checked all the usual suspects for SSDs.

Could it simply be that the drive has failed early and needs to be replaced? I have the 512MB 840 Pro version and it's simply been outstanding in every respect. It is my alternate boot drive. If I ever need to buy a 2.5" SATA drive again, it will be a Samsung Pro model.
 
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Just updated MP 2010/5,1 3.33 6-core EVO SSD

No problems. Took 15 minutes.

1. Down Load Update and make CD.
2. Remove all PCI cards and extra hard drives so software does not search for the SSD. Leave the GPU.
3. Mount SSD in the extra DVD connection or plug the EVO SSD into a SATA slot.
4. Restart and run Update.

I tried to do this last night with a USB Adapter plunged in and it searched for about 1 hour until I gave up.
 
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I tried the above, trying from a SATAII port the restoration software couldn't pick up the SSD, same with one of the extra two data from the board.

The only way the drive is picked up is from the velocity solo.

I got fed up so I formatted the drive with 0s, reinstalled yosemite and I'm now getting 280mb/s write and over 500mb/s read. Which is more of a result but its still running at half speed. I just don't understand it.

My drive is used for mostly read so I think I will have to live with it but still frustrating.

I know that the drive is supposed to have problems with read but from an internet a lot of mac users with 840 evos are having problems with write after upgrading from Mavericks to Yosemite.

I certainly won't be buying another one.
 
Well, I went and burnt the new .ISO, but everytime i get to the end with Disk Utility - it says that burning failed.

What in the world..
I've tried two separate SuperDrives and it always fails to burn it. What should I do next?
 
esaruoho said:
Well, I went and burnt the new .ISO, but everytime i get to the end with Disk Utility - it says that burning failed.

What in the world..
I've tried two separate SuperDrives and it always fails to burn it. What should I do next?
Click to expand...

I'd re-download it, as maybe something got corrupted. I don't think it's likely, but neither is making a handful of coasters in a row.
 
The Manual Trim in the new Disk Sensei should recover performance lost by the 840 Evo bug, if anyone tries it out please let me know.
 
So, disable the TRIM support in TE? And then re-enable it by DS again?

Update 1: It seems Manual TRIM is a new function, and that's actually separated from the normal TRIM support.
 
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h9826790 said:
So, disable the TRIM support in TE? And then re-enable it by DS again?

Update 1: It seems Manual TRIM is a new function, and that's actually separated from the normal TRIM support.
Click to expand...

I just have Trim Enabler with Trim Enabled.

Should I be doing something different? Whats Manual TRIM?
 
Just purchased 840 Evo (July '15) from Amazon. Planning to install in 2012 MacBook Pro in main drive bay. New to mac rumours, this thread, and ssd's, so bit of a noob in this regard.

Q's
1. Is my 840 Evo likely to be the current, latest firmware? Is there any way to tell without installing? (would Samsung be able to tell me from the serial number? I know, call them!)

2. If it is the latest current firmware, is there still an ongoing problem with this drive?

3. If continuing problem, does this affect all ssd similarly as couple of posts suggest, or is it just the Samsung?

4. If just the Samsung, I think I'll save the hassle and return it. From posts here it seems the OWC is the favoured, easiest, reliable install in the MacBook Pro. Comments?

5. Finally! As a noob to this, pointers to the best installation guide to get ssd into main drive bay on 2012 MacBook Pro? Seems to be lots of conflicting advice.

Thanks for your tolerance. Any and all responses much appreciated.
 
1) you may check the firmware version in the system report if that matches the version number on the Samsung webpage.

2) don't know yet, so far so good for me, can't feel any performance degradation.

3) AFAIK, just the 840Evo.

4) It's your own preference, some users report that the OWC SSD performance drop quickly in 2-3 years. However, I never use it, so no comment about that. You may do your own research.

5) you will have more luck if ask this question on the laptop forum.
 
h9826790 said:
1) you may check the firmware version in the system report if that matches the version number on the Samsung webpage.

2) don't know yet, so far so good for me, can't feel any performance degradation.

3) AFAIK, just the 840Evo.

4) It's your own preference, some users report that the OWC SSD performance drop quickly in 2-3 years. However, I never use it, so no comment about that. You may do your own research.

5) you will have more luck if ask this question on the laptop forum.
Click to expand...

Thanks for your reply
 
h9826790 said:
Check the Revision number in the system report. It should be EXT0CB6Q.
Click to expand...
i'm supporting a guy who bought a Samsung 840 EVO 1TB in 2014 for his Macbook pro. He wasn't aware of any firmware updates and never did one.
His revision number = EXT0DB6Q.
In the alphabet 'D' is later dan 'C'.
Now i'm confused which revision number he should have.
 
bonimac said:
i'm supporting a guy who bought a Samsung 840 EVO 1TB in 2014 for his Macbook pro. He wasn't aware of any firmware updates and never did one.
His revision number = EXT0DB6Q.
In the alphabet 'D' is later dan 'C'.
Now i'm confused which revision number he should have.
Click to expand...

That post is old, EXT0DB6Q is the latest.
 
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