Hi. I have Fujitsu Siemens Esprimo E5905 and I am unable to update the bios. Can somebody help ?!
16 year old PC (2006) pure junk now.
.DO NOT UPDATE FIRMWARE BIOS
or did you mean this.
OR DID "UNABLE TO UPDAT"E BIOS MEAN
I CAN NOT SAVE SETTINGS IN BIOS.
and bios dates are wrong too.
ANSWER , RTC CMOS COIN CELL is DEAD.
sure it is , not one lasted 16 years ever
so this is legacy PC sold in garage sale for $1??????
https://support.ts.fujitsu.com/indexdown...
leave BIOS firmware code alone or brick this PC you will, BIOS code in EEPROM does not leak out like rusty old bucket of water.
the battery is bad.
support ended
https://support.ts.fujitsu.com/IndexProd...
seen here as proof. 
Change the Motherboard battery, then try again.
https://www.google.com/search?q=Fujitsu+Siemens+Esprimo+E5905+update+BIOS
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