BIOS update help.

[Cherwally]

I know the posts are old but...it's 2016 and i was in the same situation
So...what i did was:
1) I formatted a USB memory stick as a BOOTABLE STICK using a WIN 98 image !
Instructions and LINKS HERE
2) I downloaded ALL FILES from last available BIOS VERSION for my PC (ESPRIMO P 5905)
LINK HERE (use your model serial number to be sure you get the correct drivers!
i unzipped also the Compressed Disk files, and added ALL TOGETHER inside the fresh made Bootable Stick!
3) Now you need to set in BIOS to boot first from the USB Stick!
(Better print / take a note of the next instructions on a paper or...make a photo on mobile)

a) Reboot->Go BIOS by pushing F2-> BOOT (menu)->Hard Drive->Enter->Select the USB Stick
and using the +/- (Numeric keys) put it on top of the boot devices.
Then go: ESC->ESC->EXIT MENU-> SAVE & EXIT
b) When PC Restarts, it will automatic Boot and recognize the USB stick and the BIOS UPDATE files on it!
It will ask you two times to be agree and you should select Y (YES as an answer)

4) DO NOT INTERRUPT THE BIOS UPDATE PROCESS (will take under 2 min anyway)
Just get a coffee or cuddle the cat when waiting😛

5) Ready! Your PC is now updated with last BIOS


Took me a full day to figure out what to do since on Fujitsu Instruction/manuals
there is nothing explained step by step and a lot of forums to read!