Two bios chip

[Firdous]

Hi

This is 8 TB WD my book drive, one of bios chip slightly burned and drive spinning and can read ID but no sector access, i have similar another healthy drive i can access sector by PC 3000, any idea why two BIOS chip ? The burn chip might cause data inaccessible ?

[Scottie Arnett]

What brand and board number is this?

[Scottie Arnett]

Sorry I missed that it was WD. If the board number is 004-0B36131 it is a Hitachi/WD drive and to my understanding. PC3000 can not work with these yet.

[pbzcbf...@gmail.com]

I have written tools to analyse these ROMs. Can you upload the dumps?

[Mohamed Firdous]

Hi

How to read the rom ? This is kind of new small type of chip. Even with rom reading tool cant read, which one of them is important one ?

On Sun, 21 Feb 2021, 10:19 pm pbzcbf...@gmail.com, <pbzcbf...@gmail.com> wrote:

I have written tools to analyse these ROMs. Can you upload the dumps?

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[pbzcbf...@gmail.com]

Desolder it and read it in your programmer. You do have a programmer, don't you?

[pbzcbf...@gmail.com]

Take care. I believe these are 1.8V components. Don't use a cheap 3.3V programmer.

[Mohamed Firdous]

Hi

I have TL866CS USB Universal Minipro but this chip not fit since very smaller than regular rom chip. Have you seen those drives  chip ?

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[Markus Bauer]

Use a Pogo-Pin adapter or make your own: https://opensource-data-recovery-tools.com/hardware.php?t=Pogo_Pin_Adapter_Platte_SOIC8

[jol qwerr]

first, I think that this programmer needs an atapter for 1.8v

second it does not need to fit anywhere

you can solder wires to make it fit (I'm not sure, but I think there is an atapter for that chip)

[Alandata Recovery]

I have a wd 8tb hitachi

with no drive it comes ready and ids

I have another matching one

but the rom wont verify

verify rom finds errors at different addresses around 55% through

re-reread -re-verify cant get it to verify

Using xgecu tl866 II plus programmer

The drive spins up and sounds good with the alien board - but wont come ready with alien board

it has 1 1mb rom

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[Alandata Recovery]

This is my setup

28pin tsop adapter

chip sits on first 8 pins

I read all my chips with this

The chip clip sucks.

Rarely can I get a good read with the chip clip

I bought pogo pins and printed the 3d adapter - from open source

I cant get it to work

but I clipped my chip clip to the pogopin adapter

and held it by hand

might work if I actually soldered it up....

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[pbzcbf...@gmail.com]

Is this the same drive in an earlier thread some time last year?? Do you still need the data? AFAIR the repair was relatively easy using my tool.

[Alandata Recovery]

yes its the same drive

I can upload the dumps

I need to figure out how to tell the rom programmer to slow down and try reading the flash slower

On Mon, Feb 22, 2021 at 4:59 PM pbzcbf...@gmail.com <pbzcbf...@gmail.com> wrote:

Is this the same drive in an earlier thread some time last year?? Do you still need the data? AFAIR the repair was relatively easy using my tool.

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[Mohamed Firdous]

Hi

Is this a good way to read ? pin order is correct . If this setup is ok, what need to do in the software to read the data from the chip because the chip model does not exist in the software.

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[jol qwerr]

setup is not ok

coz this programmer will use 3.3 and above voltaga

[Desert Data Recovery]

If that is the TL886 programmer, which I think it is, it can work with 1.8v chips. The voltage is set when you select the chip ID. 

On Tue, Feb 23, 2021, 5:24 AM jol qwerr <qjol...@gmail.com> wrote:

setup is not ok

coz this programmer will use 3.3 and above voltaga

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[jol qwerr]

not the CS

[wayne horner]

that surface mount chip will work in the tsop adapter

you must have an adapter that this will fit in...

also

you can just solder the chip down  thats what the pads are for...

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[Mohamed Firdous]

Hi

My chip is mx25u1631f but in above picture i just tried with normal SMT chip. I have TL866 II Plus programmer which can read 1.8 v as well. I'm still stuck , I read above chip in the picture and got some rubbish data , it didn't read correctly , what should i do ?

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[wayne horner]

I dont have a 1631

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[pbzcbf...@gmail.com]

See you other thread:

https://groups.google.com/g/datarecoverycertification/c/ur8oLQgsUc0/m/u1eIzkvSCwAJ

[wayne horner]

wow!

A patched rom to try !

THANKS!

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On Tue, Feb 23, 2021 at 1:22 PM pbzcbf...@gmail.com <pbzcbf...@gmail.com> wrote:

See you other thread:

https://groups.google.com/g/datarecoverycertification/c/ur8oLQgsUc0/m/u1eIzkvSCwAJ

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[Mohamed Firdous]

Hi

One of the chip seems damaged, I have successfully read working chip and attached, with this working chip drive can initiate and read ID but no sector access. Any way to access sector with this chip ?

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[pbzcbf...@gmail.com]

Is this a WD80EDAZ-11TA3A0?

WD80EDAZ-11TA3A0 label

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/data-center-drives/ultrastar-dc-hc300-series/product-manual-ultrastar-dc-hc320-sata-oem-spec.pdf

According to the manual, there is no data loss protection on power loss, so the second "ROM" doesn't appear to be an "NVcache". Instead I suspect that it may be a backup for the primary ROM, possibly so that the drive can recover from a bad firmware update.

[pbzcbf...@gmail.com]

Your ROM structure differs from the other examples I've seen, so I will need to write another tool to parse it.

I notice that its size is 0x200200, so I'm wondering where those additional 0x200 bytes come from.

[pbzcbf...@gmail.com]

The MX25U1632F has an 8Kbit secured OTP (one time programmable) area -- 4Kbit for the factory and 4Kbit for the customer.

https://www.macronix.com/Lists/Datasheet/Attachments/7928/MX25U1632F,%201.8V,%2016Mb,%20v1.0.pdf

I wonder if this is going to become a new complication.