XC-895 bios update failed I wanted to upgrade to a higher version

I have an XC-895 (upgraded to WIN11).

As far as I remember the BIOS version was R01-A0.

I wanted to upgrade to a higher version, so I downloaded R01-A3.
Unpacked it, tried all variants from under Windows according to the instructions, none of them worked (As it turned out on WIN10 they work fine :( ).

I decided to download a utility from the bios manufacturer - Aptio V.

I gave it a .CAP file from the ROM folder.
Started the flashing process, the utility erased part of the cells, wrote a new bios in them, checked and wrote everything was fine.

After rebooting the computer does not make any sound signals, CPU cooler, case and video card are working.
Video is not output through the built-in core or external video card.

Tried the methods described here:
formatted the flash drive
put RCVBOOT.CAP in the root (took the firmware from the ROM folder and renamed it)
I took out the bios battery, put it back in, inserted the flash drive and turned on the PC.

Nothing happened, no signal, everything is still spinning.
USB flash drive LED first blinks and then is constantly lit without flickering.

Are there any options to fix it without a repair shop?

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[Edited the thread to add issue  detail]

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Larryodie

I would try the bios test jumper, if that doesn't work then remove the battery and unplug the computer, overnight or a whole 24 hours would be better. Good Luck.

Larryodie

Remove all USB flash drives and any other USB units.

billsey

And if those don't work you have hosed the BIOS and it needs to be reflashed at the service center. You should never be mucking with non-standard BIOSes unless you are willing to work with a brick.