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Any SSD Recovery Professionals here??
http://forum.hddguru.com/viewtopic.php?f=10&t=36439		 Page 3 of 3
Author:  HaQue [ March 5th, 2018, 21:14 ]
Post subject:  Re: Any SSD Recovery Professionals here??
IF Ace know how to raw data dump (chip Off) this SSD .. WHY $3.5K???? Ludicrous
IMHO you would be paying them to research it, and may or may not get anything for it.
Author:  rogfanther [ March 5th, 2018, 21:26 ]
Post subject:  Re: Any SSD Recovery Professionals here??
Some of that would depend on what the people at Ace really said/wrote, and also what they meant. Sometimes, explaining things to lay people is hard, and customer may mix what he hears here with what he heard/read there, and when retelling it to someone the content of the message will get different.

Don´t you all remember the case a couple of weeks ago where that greek guy misheard "complete recovery" and understood "recovered only a couple of files" ?

Also, as an honest question : this Ace lab in USA can be considered as competent as the original in Europe, or somehow they are like, do only the easier cases ?
Author:  fzabkar [ March 6th, 2018, 0:21 ]
Post subject:  Re: Any SSD Recovery Professionals here??
Like HaQue, I can't see any difference in the capacitor population between the OP's SSD and the examples on the Internet. As for the material around the controller, it looks like "BGA glue" to me. It is also present in the other examples.
Author:  fzabkar [ March 6th, 2018, 8:49 ]
Post subject:  Re: Any SSD Recovery Professionals here??
I realise that the OP is not interested in performing any measurements, but others might be, so here is my take on the circuit.

I would measure the voltages at V1, V2 and V3. Also measure the voltages at the 5 inductors on the underside. The latter would be associated with the internal PWM circuitry in the flash controller.

I'm guessing that the 2-pin location is the shorting point for safe mode, but I would be careful. If all the supplies are OK, and the SSD does not enter safe mode, then I would check the crystal. I would also check whether the controller or NAND are hot to touch.

Attachments:
regs2.jpg
regs2.jpg [ 183.22 KiB | Viewed 7119 times ]
regs1.jpg
regs1.jpg [ 377.31 KiB | Viewed 7119 times ]
safe_mode.jpg
safe_mode.jpg [ 70.61 KiB | Viewed 7119 times ]
controller_PWM_regs_underside.jpg
controller_PWM_regs_underside.jpg [ 93.02 KiB | Viewed 7119 times ]
Author:  HaQue [ March 6th, 2018, 11:28 ]
Post subject:  Re: Any SSD Recovery Professionals here??
He should be as it has already been 3 weeks, and this would take what, an hour being careful. Also he did say
Quote:
I need to do whatever it takes to get my data back off this drive


Anyway I am curious about the Phison now. I just bought one for research : https://www.fruugoaustralia.com/pny-cs900-120gb-25-sata-3-internal-solid-state-drive-ssd-ssd7cs900-120-rb-new/p-17383107-37990902. (I'm going to regret this in the morning!) I will take the measurements suggested by Franc.

OP, Could you re-upload the pics that are now missing from first posts?
Author:  fzabkar [ March 6th, 2018, 15:20 ]
Post subject:  Re: Any SSD Recovery Professionals here??
I wonder if the square safe mode (?) pad is wired to the R/B pins of the flash. The underside of the SSD has an unpopulated 272-ball BGA, so it wouldn't be to difficult to test this idea. Perhaps shorting the R/B pin(s) to ground could be a universal safe-mode method?

https://prod.micron.com/~/media/documents/products/data-sheet/nand-flash/80-series/l84c_plus_64gb_128gb_256gb_512gb_async_sync_nand.pdf
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