Hi all,

My Toshiba Satellite C55-A-1TX laptop is almost repaired, but I still need some advice.

After re-flashing both BIOS and ME chips, the laptop starts again and works almost normally (I have Ubuntu Ubuntu 22.04.5 LTS operating system).

But ... I see now in my BIOS the following :

- System BIOS version: 1.00
- EC Version: 1.00

And since I have done the repair, [U][B]my SD card reader is not working at all : [/B][/U]Not seen in the list of hardware and no external drive mounting when inserting a flash memory.

...

Hi,
The computer is repaired and working fine.

The only thing I noticed is that all BIOS versions are now announced as being Ver 1.0 in the main BIOS screen (Main BIOS and EC version). I think it was V1.30 and V1.10 (or V1.00) in the past.

Now that the laptop is back to service, and that it can thus boot for example on external support like USB stick or CD rom, is there another file to download like iso, or whatever else to then again flash the BIOS, but this time to the latest version without having to dismount the Motherboard or desolder the chips?
...

Hi SMDFlea,

I am back again .... Last thing I hope....
I have managed to copy the original DMI zone to the new downloaded BIN file to make it match with my original data.
By the way, I looked for my LAN MAC address of the onboard NIC controller, and I also found it, and replaced it with my own laptop MAC.

Until here I hope everything fine, for the rest I found a huge number of differences, as I have a V1.1 in my original BIOS and a V1.0 in the new downloaded version, so I suppose somewhere going back with version.

Anyway, if it boots back, it...

Added comment ....
I have reprogrammed successfully both Chips with the content downloaded following the link indicated in above's comment #4, but I noticed something when analyzing their buffer data.
So, small clarification needed here before soldering them back on the motherboard... re-assembling my computer and test it.

[U]Let me explain:[/U]
Inside the Winbond W25Q32FVSIQ => 32MBits (4MBytes) memory, from the location hexadecimal address 0x4A721 to 0x4A7C4, there is a zone where we see in clear text the identification of the laptop, then some less readable...

Thanks a lot SMDFlea!

Sorry for the late answer, [B]I was busy with some other things and I didn't look here yet[/B].

I am not sure if it is an 100% match, as they speak about C50 while mine is C55. But the MB number seems to match so should be OK (I don't know the exact difference between these different laptop type number, so the same BIOS probably used at multiple places)..
Also not sure what this guy is speaking about by "cleaning the ME region", etc... Strange to me.

Hopefully I don't need to try multiple versions, as it needs solder/unsolder...

Hi SMDFlea ... Hope you are doing well.

Thank you very much for your quick reply.

Please find attached the 2 requested BIN files (dump from the 2 winbond chips), now that the laptop is already no more working (of course, I don't know if they are still OK, or if some data are destroyed, explaining the issue I have).

[U]IMPORTANT NOTE: [/U]
As I mentioned in my initial request,[B] I get an error message when I try to attach files with BIN extension[/B], So [B]to work around[/B] this issue,[B] I just made an archive with both files in.[/B]

...

Hi all,


[B]I need the BIOS (bin files) to re-flash the BIOS chips on a toshiba laptop.[/B]

Why I am pretty sure I need this to repair?


1) Power supplies seem OK.

2) Battery has been replaced, is charging well ... also not the CMOS battery CR2032, also not OK without RAM, or 1 or the 2 RAM modules (RAMS are OK).

3) Laptop does really rare (seems random things) with the 3 leds (power, net, ...)

4) In the past, when trying to restart 100 times via power button, it was sometimes succeeding, now no more....