emergency rom needed

[Franck]

Hello,

I have extracted the ROM from the faulty drive (I ve repaired it)hen analyzing the ROM structure with F3 ROM Explorer, two firmware modules report CRC failures:

• DL_BFWDIR — CRC 3168 (Bad)

• IAP — CRC FFFF (Bad)

Screenshot attached for reference.

Thank you.
Additional note regarding urgency

I would also like to mention that the data stored on this drive is extremely important. It contains medical records of sick patients, and unfortunately there is no professional data-recovery laboratory in my country.For this reason, I kindly ask for your help and expertise.

Any guidance or support you can provide would be greatly appreciated.Thank you in advance for your kindness and understanding.

[Franck]

here is the pcb donor and patient  pic  and rom of them (original and donor one).
I'm sorry for duplicate  forum that its the same drive which have got a faulty 3,3v ( its seems ok by a an electronician)

[Franck]

its seems impossible to send the  others here so  will upload it in my google drive and share it

https://drive.google.com/file/d/1h2PH9JjlRy6up4KVGeNXsbFhq_rrq1ru/view?usp=drive_link

[Anonymous]

For those who can help I'm ready to pay your wage as it is not so expensive,
I ve try  to  look at hddsurgery and hddguru but there is no luck.
I've been looking for some forums but no one can till now.  
thanks 

Le lun. 17 nov. 2025 à 12:16, Franck <service...@gmail.com> a écrit :

its seems impossible to send the  others here so  will upload it in my google drive and share it

https://drive.google.com/file/d/1h2PH9JjlRy6up4KVGeNXsbFhq_rrq1ru/view?usp=drive_link

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[pbzcbf...@gmail.com]

These appear to be benign. The same anomaly exists in the donor ROM.

[pbzcbf...@gmail.com]

If the drive spins up, then the PCB is most probably OK.

[Anonymous]

Hi,
The donor drive is ok ,so I guess that the pcb is  ok,
Can you explain what you want to say by " These appear to be benign. The same anomaly exists in the donor ROM"please,thanks and what can I do?

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[pbzcbf...@gmail.com]

There will often be ROM segments with bad checksums, or non-existent checksums. This is normal. Some segments, eg CAP/RAP/SAP, must always have valid checksums. You need to learn to recognise when this is the case.

[Anonymous]

ok thanks, I'm on my way to learn data recovery processus, so  I may lost but I can understand what it 's mean.
So I presume that it can be regenerated by re injecting  good module?

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[pbzcbf...@gmail.com]

Here is an example where two segments in your working donor ROM (00060040_DL_BFWDIR and 00040040_DL_BFWDIR) have the same CRC but different content. The first has a valid CRC, while the second does not. It appears that the "bad" segment was modified after the CRC was calculated, and the CRC was not re calculated after modification.

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000000  62 00 01 00 FF FF FF 7F FF FF FF FF FF FF FF FF
00000010  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
00000020  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
00000030  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
00000040  FF FF FF FF FF FF FF FF A0 00 02 00 FF FF FF 7F
........
000000D0  EE 45 00 00 FF FF FF FF FF FF FF FF FF FF FF FF
........
000001F0  FF FF FF FF FF FF FF FF FF FF FF FF 6B 31 00 00
                                              ^^^^^
                                               CRC


Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000000  62 00 01 00 FF FF FF 7F 17 06 03 13 0D 00 00 00
00000010  80 3F 00 00 00 28 11 04 00 00 08 00 0E 60 01 00
00000020  06 03 00 15 03 06 12 20 08 00 00 00 00 00 00 00
00000030  00 00 00 00 00 15 00 00 00 00 00 00 00 00 00 00
00000040  00 00 00 00 00 00 00 00 A0 00 02 00 FF FF FF 7F
........
000000D0  EE 45 00 00 FF FF FF FF FF FF FF FF FF FF FF FF
........
000001F0  FF FF FF FF FF FF FF FF FF FF FF FF 6B 31 00 00
                                              ^^^^^
                                               CRC

[Anonymous]

“Thanks for your clarification. In my patient ROM, the modules RAPM, SAPM and SFW all report BAD checksums.
I understand now that some ROM segments normally have missing or irregular checksums, but these adaptive modules (CAP/RAP/SAP) must always be valid.

This seems to confirm that my patient ROM has damaged adaptive data, probably caused by unstable Vcore (measured at 2.49 V on the original PCB).
The donor PCB works correctly on its own drive, but the patient PCB produces bad adaptive checksums when dumping the ROM.

If possible, I would like advice on how to rebuild or repair the adaptive modules using a donor ROM from the same firmware family.?

[pbzcbf...@gmail.com]

Your "original seagate barracuda 500go.bin" ROM dump has good adaptive and SFW checksums. :-?

[Anonymous]

here it  was is shown by F3rom explorer

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[pbzcbf...@gmail.com]

Do you not understand what "Ok" means? :-?

[Anonymous]

Of course I understand what'it means but i was surrounded by  this  as it is an urgency case so I was  lost in my mind,sorry fo that

To view this discussion visit https://groups.google.com/d/msgid/datarecoverycertification/08efafec-6674-4c9a-8201-c07b62e74304n%40googlegroups.com.

[Anonymous]

so my question is it ok to transfer the rom to the donor pcb ?thanks for your patience and advice

[pbzcbf...@gmail.com]

There is no point in doing this. The problem is not on the PCB. The problem is internal. Consult your PC3K manual, or MRT manual, and show us a terminal report.

[Anonymous]

Here is a tough one as I lost my mrt ultra and about the pc3000 it'is damage d so i don't know hat to do ,what i can try is maybe  trying to  use a usb ttl to output  terminal info?

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[Franck]

Hi,
they  have a paper version of some record but we can try soon,when I will be back at their HQ
thanks