i have got APR2009 (customer) with pcb demaged, i can not read nvram.

i found a donor (FEB-2009) but pcb looks different and there is also U7 chip ( that in patient is missing not becouse was removed)

i am not sure it is a compatible pcb..

Normally you match the numbers on the sticker of the PCB to get a good match and not the date on the label.

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Iorana Haraharaini

i matche the model of hdd

Did you understand what I wrote. On your PCB is a white label you need to match this label to get a good match for your PCB.

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Iorana Haraharaini

I agree with Ann. the ones on the pic are not compatible.

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Ransomware Reverse Engineering - NoMoreRansom! partners

@ Ann
it's not a matter of understanding that there is a label with a number, it's that some models of pcb even if have different number are perfectly compatible.

@ northwind
thanx anyway.. pcb was faulty becouse spindle motor was blocked,heads were sticking on the platters, probably for a suddenly power off of the external box power supplier.And customer left hdd powered for too much time later on leading the pcb faulty.

So stiction + pcb. Careful with these, esp. if the drive has sustained such violent behaviour, heads could be damaged too.

Good luck!

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SandForce SSD Recovery
Ransomware Reverse Engineering - NoMoreRansom! partners

Not that I tried this, but I think most likely the ROM versions will be different between those PCBs.

But you can experiment and see what happens, right?

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Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts

match first 2 lines of the pcb sticker

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There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

Quote for refused at the end from custoner..

@ shahij
thanx for tip