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 Post subject: TOSHIBA MK7575GSX - ROM Problem
PostPosted: February 28th, 2019, 3:35 
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Hello,

I need the ROM for the TOSHIBA MK7575GSX.
FACTORY FW VERSION GT001M9
USER FW VERSION GT001M

HD problem = It does not turn on.
Checked is the ROM.

Thanks in advance.

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: February 28th, 2019, 17:51 
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Hı.
Did you check pcb ? Is there rom problem or pcb ?

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 1st, 2019, 5:30 
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It's the ROM problem.
The PCB in another HDD with the corresponding ROM works perfectly.
I'm trying to rebuild the ROM.

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 1st, 2019, 16:38 
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Is the ROM dead or merely corrupt? Can you upload a ROM dump?

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 3rd, 2019, 15:25 
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fzabkar wrote:
Is the ROM dead or merely corrupt? Can you upload a ROM dump?

The ROM chip is fine. ROM is corrupt
, as the first diagnosis.


Attachments:
rom.rar [277.88 KiB]
Downloaded 62 times

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 3rd, 2019, 18:52 
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The CPs seem OK. All except two have an XOR8 sum of 0x00.

However, the ROM is for a different model (MK3275GSX):

56_MN.bin

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

00000000  4D 4E 20 20 20 20 20 20 20 20 20 20 20 20 20 20  MN             
00000010  20 20 20 20 20 38 32 4C 37 59 4F 52 58 46 54 4F       82L7YORXFTO
00000020  53 48 49 42 41 20 4D 4B 33 32 37 35 47 53 58 20  SHIBA MK3275GSX


Attachments:
CPs.7z [14.31 KiB]
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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 3rd, 2019, 19:28 
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Thanks for the information submitted
It seems that they have changed the PCB to the HDD.
Tomorrow I will do some checks and comment what I found out.

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 4th, 2019, 3:03 
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If the PCB is OK, it should report the serial number of the drive it came from...
This is what you had to start with.


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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 4th, 2019, 5:26 
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BGman wrote:
If the PCB is OK, it should report the serial number of the drive it came from...
This is what you had to start with.

The PCB isolated from the HDD does nothing. It does not even give a signal of BUSY.
I think it has a corrupt part of executable code.

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 4th, 2019, 11:14 
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mhp666 wrote:
BGman wrote:
If the PCB is OK, it should report the serial number of the drive it came from...
This is what you had to start with.

The PCB isolated from the HDD does nothing. It does not even give a signal of BUSY.
I think it has a corrupt part of executable code.

The correct way to do it:
1. Wait the drive to clear BUSY
2. Send RST
3. Send SON
4. Get the Passport


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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 4th, 2019, 13:13 
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mhp666 wrote:
1. Wait the drive to clear BUSY

This circumstance does not occur at any time.
It does the same as if it did not have the ROM.
I have tried several isolated TOSHIBA PCBs and with what you mention, they work fine, but different PCBs with the ROM that I have uploaded do nothing.

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 4th, 2019, 19:21 
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9A_SN.bin

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

00000000  53 4E F9 4E 37 57 46 55 56 52 47 30 30 30 30 31  SNùN7WFUVRG00001
00000010  32 30 38 31 39 31 37 35 31 59 34 41 37 32 31 47  208191751Y4A721G
00000020  4C 31 32 34 58 4E 46 30 30 30 33 47 54 30 30 31  L124XNF0003GT001
00000030  53 39 30 00 00 30 30 30 30 30 30 00 58 00 00 CC  S90..000000.X..Ì

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 5th, 2019, 3:50 
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Maybe PUIS is enabled.
Did you try a terminal connection?


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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 5th, 2019, 7:43 
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56.bin says it's not original ROM

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 5th, 2019, 7:49 
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Sometimes I am doing this way with MRT.
Try to open "edit HDD ID" section. It's read drive info again. After read info "Cancel"
And re identify device.
Device info comes . And more option works

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 5th, 2019, 8:19 
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[/quote]
BGman wrote:
Maybe PUIS is enabled.
Did you try a terminal connection?


I do not know what the PUIS are, I've seen them in the MRTLAB tool for SAMSUNG but I do not know what they are for.
I will test if I have communication by terminal.

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 5th, 2019, 13:41 
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This is what I get per terminal.
It does the same as if I remove the ROM.
I think the MC is working with the BOOTLOADER.


Attachments:
2019-03-05 at 18-30-50.png
2019-03-05 at 18-30-50.png [ 20.08 KiB | Viewed 2327 times ]

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 5th, 2019, 15:12 
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OK. The ROM is already dead.
The next time you'll kow what to do first.


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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 5th, 2019, 15:52 
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PUIS is Power Up In Standby. If PUIS were enabled, a functioning drive would come ready almost immediately.

As for the ROM, there appears to be a 6-byte CRC at offset 0x6FF78. I don't know how it is calculated, though.

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 Post subject: Re: TOSHIBA MK7575GSX - ROM Problem
PostPosted: March 5th, 2019, 16:46 
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I think there would be possibilities to put this HDD back into operation, if it had a ROM of this model.
For the moment, I will start with a ROM of the same PCB model and, if possible, the same firmware version.
If I get a similar one, I'll upload it, in case someone is interested.

Code:
TOSHIBA MK7575GSX.                        USER FW VERSION  GT001M  .  FACTORY VERSION  GT001M9 .12/21/2011


I'm not sure if the PCB corresponds to this HDD.
The PCB model that it brings is G002825A

@fzabkar, I'm going to modify some ROM of this PCB model, without taking CHECKSUM into account, and comment on the effects it has on the HDD. When I have a space I will do it.

Does anyone know of any compiler or decompiler for marvell chips?

Thank you all.

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