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 Post subject: ST2000LX001 PCB ROM Location
PostPosted: January 7th, 2019, 10:29 
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Joined: July 5th, 2007, 11:44
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Location: Portsmouth
Hi,

Can anyone confirm that the ROM information is kept on the Marvel BGA chip as shown in image attached.

We had a situation were we have physically swapped the patient Marvel chip from the damaged PCB to a good donor PCB. When we read the ROM through boot code the serial number is the same as the previous donor ROM information. Is the terminal getting this from somewhere else on the donor PCB board?

Would appreciate your feedback


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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: January 7th, 2019, 14:32 
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Joined: September 8th, 2009, 18:21
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IIRC, the ROM is that tiny BGA chip above the MCU and to the right of the SDRAM. If you can tell us its markings, I should be able to locate its datasheet.

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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: January 7th, 2019, 19:20 
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It's also very likely that the info is being pulled 100% from that NAND chip. It is an SSHD after all, so it'll only re-read the ROM if you wipe the NAND.

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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: January 8th, 2019, 5:30 
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Joined: July 5th, 2007, 11:44
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Thanks for your replies. I have written the codes on the new image. Also I can't remember if the NAND has been reinitialised yet.


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image001 2.jpg
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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: January 8th, 2019, 6:32 
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W25Q80BWBY, Winbond, 8M-bit serial flash memory, 1.8V, marking 3Axx, WLBGA-8:
https://www.macrogroup.ru/docs/1348

NCP708, ON Semiconductor, 1A, 3.3V, 1% Precision, Very Low Dropout Voltage Regulator, marking 708 + 330, UDFN-6:
http://www.onsemi.com/pub/Collateral/NCP708-D.PDF

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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: January 8th, 2019, 9:13 
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Joined: March 6th, 2010, 3:46
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Location: Kolding | Denmark
+1 ROM is WLBGA8


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WLBGA-100792364.jpg
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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: January 8th, 2019, 14:43 
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Joined: November 29th, 2006, 10:08
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Fiddly little buggers to switch as well!

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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: January 9th, 2019, 12:29 
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Joined: July 5th, 2007, 11:44
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Cheers perfect, now have the ROM to write to donor PCB. We want to initialise the Nand on the donor PCB and have tried the Kahuna patch but get objects not found error. Any ideas ?

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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: January 10th, 2019, 1:59 
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This is not Kahuna family , that's why the patch is not working. These are Rosewood SSHD drives. No Rom patch as far as I know.

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 Post subject: Re: ST2000LX001 PCB ROM Location
PostPosted: February 20th, 2019, 16:27 
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still, there are some tricks to get it out of dead state...
pepe

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