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mondrian
 Post subject: Seagate Corrupted ROM - boot code checksum failure
PostPosted: January 4th, 2021, 18:30 
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Joined: December 29th, 2014, 11:49
Posts: 21
Location: NC, USA
Seagate ST31000524AS 9YP154-521 JC4A TK DC:12371

No Spin/Registers on power, no terminal output on patient PCB. Read ROM via programmer, wrote to donor PCB, no spin but terminal output:

Code:
SEA-3 Yeti Boot ROM 2.0  (12/06/2007)
Copyright Seagate  2007

Serial FLASH boot code checksum failure!

Boot Cmds:
DS
AP <addr>
WT <data>
RD
GO
TE
BR <divisor>
BT
WW
?
RET
>


Opened ROM in PC3k and am able to see data, Head maps look good, ID parameters are correct. Is there a way to 'patch' the data into a new ROM?


Attachments:
459261.bin.rom.7z [139.61 KiB]
Downloaded 587 times
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pepe
 Post subject: Re: Seagate Corrupted ROM - boot code checksum failure
PostPosted: January 6th, 2021, 4:35 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
It looks like a sabotage to me....

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pepe
 Post subject: Re: Seagate Corrupted ROM - boot code checksum failure
PostPosted: January 6th, 2021, 5:13 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
maybe not, still checking...

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fzabkar
 Post subject: Re: Seagate Corrupted ROM - boot code checksum failure
PostPosted: January 7th, 2021, 14:33 
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Joined: September 8th, 2009, 18:21
Posts: 16956
Location: Australia
pepe wrote:
maybe not, still checking...

F3RomExplorer reports some checksum errors, but I think they may be benign.

It might help to know how the original PCB failed.

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pepe
 Post subject: Re: Seagate Corrupted ROM - boot code checksum failure
PostPosted: January 7th, 2021, 21:41 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
After checking a bunch of things and finding nothing i wrote that rom into a pcb and it started just fine. So the problem is somewhere else...

pepe

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