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WD - HGST 18TB HELIUM - ROM?

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DRUG

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: April 19th, 2022, 13:33

Joined: April 22nd, 2015, 20:32
Posts: 413
Location: Portugal

fzabkar wrote:

DRUG wrote:

Already done some measurements, both fuses read 0.00V

Volts or ohms?

What about the rest?

What model is it?

Model is:
WD Ultrastar® DC HC550

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fzabkar

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: April 19th, 2022, 15:55

Joined: September 8th, 2009, 18:21
Posts: 15538
Location: Australia

AFAICT, your ROM has a width of 3mm and a pin pitch of 0.8mm. I haven't been able to find a breakout PCB or DIP-to-smt adaptor that has these dimensions. :-(

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DRUG

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: April 20th, 2022, 6:40

Joined: April 22nd, 2015, 20:32
Posts: 413
Location: Portugal

According to a pcb vendor only both rom chips should be changed.

Will try soon and report back.

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vx1

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: April 20th, 2022, 10:21

Joined: November 5th, 2015, 18:00
Posts: 69
Location: in the lab

https://pt.aliexpress.com/item/4000594884381.html

3x2 and pitch 0.5mm

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vx1

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: April 20th, 2022, 10:56

Joined: November 5th, 2015, 18:00
Posts: 69
Location: in the lab

ops, adapter wrong...

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fzabkar

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: April 20th, 2022, 15:18

Joined: September 8th, 2009, 18:21
Posts: 15538
Location: Australia

I've been examining the firmware updates for this family.

He16 & He18 Ultrastar DC HC550 Firmware Update:
https://support-en.westerndigital.com/app/answers/detail/a_id/29514

PCM R270 SATA 4kn&512e
https://download.wdc.com/hdd/PCGAW270.zip

PCM R232 SAS 4kn&512e
https://download.wdc.com/hdd/PCM_R232_SAS_4kn%26512e.zip

PCM R232 SATA 4kn&512e
https://download.wdc.com/hdd/PCM_R232_SATA_4kn%26512e.zip

PCM R120 SAS 4kn&512e
https://download.wdc.com/hdd/PCM_R120_SAS_4kn%26512e.zip

PCM R120 SATA 4kn&512e
https://download.wdc.com/hdd/PCM_R120_SATA_4kn&512e.zip

I have extracted the individual firmware modules from each of the payloads (see attachment). I notice that there is an RSIG module (ID = 0x16). This consists of a 0x100-byte signature plus a 32-bit checksum. The little-endian sum of the dwords in the signature plus the checksum dword is 0x00000000.

I don't recall seeing this module in earlier He firmwares, so perhaps WD has tightened the security.

Attachments:

He16_He18_Ultrastar_DC_HC550.7z [7.15 MiB]
Downloaded 264 times

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fzabkar

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: April 26th, 2022, 17:56

Joined: September 8th, 2009, 18:21
Posts: 15538
Location: Australia

Here are the package dimensions.

Attachment:

USON8-3mmx4mm.gif [ 33.23 KiB | Viewed 7049 times ]

DIP adapter (not cheap):

https://www.reveltronics.com/en/shop/76/7/chip-programmers/adapter-dfn8-3x4-udfn8-vson8-uson8-dil8-dip8-76-detail
https://forum.reveltronics.com/viewtopic.php?t=79

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suricate.ch

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: April 27th, 2022, 6:24

Joined: March 11th, 2021, 10:13
Posts: 184
Location: Switzerland

Thank you, Reveltronics is great.

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DRUG

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: May 2nd, 2022, 18:28

Joined: April 22nd, 2015, 20:32
Posts: 413
Location: Portugal

fzabkar wrote:

Here are the package dimensions.

Attachment:

USON8-3mmx4mm.gif

DIP adapter (not cheap):

https://www.reveltronics.com/en/shop/76/7/chip-programmers/adapter-dfn8-3x4-udfn8-vson8-uson8-dil8-dip8-76-detail
https://forum.reveltronics.com/viewtopic.php?t=79

I managed to find a slighty cheaper one.
https://a.aliexpress.com/_mOLkv0Q

About the case, it was solved, only 2 rom swapped.

HOWEVER, today I got exactly the same model coming in, same issue, and since i had a spare pcb i quickly jumped to be a rom jockey to find out it didnt work. Upon further inspection I decided to swap the controller, and data is being cloned right now.

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fzabkar

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: May 2nd, 2022, 19:20

Joined: September 8th, 2009, 18:21
Posts: 15538
Location: Australia

Are you saying that two PCBs from the same model behaved differently, one with a unique key in the MCU, the other without???

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DRUG

Post subject: Re: WD - HGST 18TB HELIUM - ROM?

Posted: May 2nd, 2022, 19:58

Joined: April 22nd, 2015, 20:32
Posts: 413
Location: Portugal

fzabkar wrote:

Are you saying that two PCBs from the same model behaved differently, one with a unique key in the MCU, the other without???

Yes... When the data is cloned i'll test if the donor mcu was damaged by any chance.

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