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 Post subject: Is U14 EEPROM swap necessary for MyPassport board swap?
PostPosted: August 9th, 2018, 15:46 
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Joined: May 19th, 2018, 14:18
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Location: Canada
I have a WD MyPassport 1.0TB external USB hard drive with a 2060-771801-002 Rev A board (more specs below). My end goal here is just to recover the data. Board appears to have some kind of water/chemical corrosion damage. Both U12 and U14 EEPROM chips are Winbond 25x20blnig 2MBit/256Kb chips. I was able to sucessfully backup the contents of the U12 ROM chip using a CH341A programmer w/ SOIC clmap, but not so much the U14, I think that one is nuked.

My plan was to get an identical board and program the U12 in-place on an identical board (same board #, same controller chip, SMOOTH chip, etc.) using the backup I'd made. Or, failing that (do these boards enable write protection for the winbond / PM25LD20 chips?) using my hot air rework station and swapping the U12.

My question is, After swapping the U12 chip onto an identical donor board (or repgrogramming it in-place), would the donor board's U14 chip be able to decrypt the data? Or would I need to get a compatible SATA board and decrypt with Reallymine? The "u14 dead" topic at https://forum.hddguru.com/viewtopic.php?f=1&t=34927 suggests that it may be possible to use a 771823 SATA board.

HD specs
WD10JMVW
Controller: 88I9346-TFJ2
SMOOTH: A21U599
EEPROM BIOS: U12 and U14 25x25blnig


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 Post subject: Re: Is U14 EEPROM swap necessary for MyPassport board swap?
PostPosted: August 10th, 2018, 2:56 
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Joined: March 6th, 2010, 3:46
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Location: Kolding | Denmark
If your data is important, then start telling the full story. What happened, drive behavior and why you think drive failure is related to pcb.
This will give you the best feedback to rescue your data.

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 Post subject: Re: Is U14 EEPROM swap necessary for MyPassport board swap?
PostPosted: August 10th, 2018, 3:10 
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Joined: November 29th, 2006, 10:08
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Location: UK
digisupport wrote:
If your data is important, then start telling the full story. What happened, drive behavior and why you think drive failure is related to pcb.
This will give you the best feedback to rescue your data.


Agree, you need a proper diagnosis really. But at least you can narrow down the options....

Does the drive spin up?
Does it buzz or click?
Does it sound normal?

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 Post subject: Re: Is U14 EEPROM swap necessary for MyPassport board swap?
PostPosted: August 10th, 2018, 6:41 
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Joined: March 7th, 2009, 12:43
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Location: Data recovery + remote Raid recovery help
u14 isn't neccessary if you gonna use Sata analog pcb coz decryption key stored either in SA? and you have tool pc3k with DE.
In case if you use USB donor pcb , with not original U14 , key from this (u14)ROM almost probably update copy in SA, and you have a chance to mess everything.

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 Post subject: Re: Is U14 EEPROM swap necessary for MyPassport board swap?
PostPosted: August 16th, 2018, 22:11 
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Joined: May 19th, 2018, 14:18
Posts: 3
Location: Canada
DR-Kiev wrote:
u14 isn't neccessary if you gonna use Sata analog pcb coz decryption key stored either in SA? and you have tool pc3k with DE.
In case if you use USB donor pcb , with not original U14 , key from this (u14)ROM almost probably update copy in SA, and you have a chance to mess everything.


Yup I did the SATA swap, I was able to find the DEK thankfully due to default KEK being used. I think it's now just a matter of making an image and decrypting with that key in reallymine.


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 Post subject: Re: Is U14 EEPROM swap necessary for MyPassport board swap?
PostPosted: August 21st, 2018, 0:09 
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Joined: May 19th, 2018, 14:18
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Location: Canada
Decrypted the data successfully. PC3k wasn't needed. Guide at https://github.com/themaddoctor/linux-mybook-tools was helpful.


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 Post subject: Re: Is U14 EEPROM swap necessary for MyPassport board swap?
PostPosted: August 21st, 2018, 16:23 
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Joined: September 8th, 2009, 18:21
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Location: Australia
GarrettVD wrote:
Decrypted the data successfully.

Congratulations.

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