Satellite C855 - 21Q does not start - BIOS flash failed


I'm french, sorry if my English is bad.

I updated the Bios of a Toshiba C855 - 21Q. But during the flash, mobile restarts.

Now, the computer will not boot (black screen + power on wifi led flashes).

I'll try the recovery mode.

I extracted the exe file. Rename the FD PLCSF8. EDM
Copy to the root of the USB stick (256 MB FAT16).

Can I plug it into the laptop with AC, HDD, unplug. Just the USB STICK.
Plug the AC, hold + B key and start the computer.

But nothing happens. The USB is not read (no Flash)...
I also tried with the other key like Fn + F / Fn + B / Fn + Esc... still nothing.

What are the keys to start the recovery.
The process is correct?

Thank you.



Unfortunately, you need special BIOS version to be able to Flash the BIOS to USB flash memory.

The fact is that you could download only the version of the BIOS Win-based driver Toshiba UE page and requires this version of BIOS preinstalled system.

In your case, it seems that something was wrong during the process of updating the BIOS and the EPROM module was not properly flashed. To resolve this problem, the EPROM module must be flashed once more use special disc of crisis of the BIOS.

To my knowledge, this can be done by Toshiba approved maintainer.

However, I have also read in this forum that only users managed reflash the BIOS with Bios Phoenix crisis recovery tool. Not very well where you can find these software but recommend to google.

Tags: Toshiba

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