@Bata Please post a valid link to your BIOS. I tried in IE and FF, neither worked with FPT or HTTP - no luck looking up the system using that model name at Fujitsu either.
I tried the following, none work in IE Or Firefox
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ftp.ts.fujitsu.com/pub/mainboard-oem-sales/products/mainboards/EoL/EoL_Industrial&ExtendedLifecycle/D3162-B/BIOS_D3162-B/D3162-B1x.R1.23.0.ZIP
http.ts.fujitsu.com/pub/mainboard-oem-sales/products/mainboards/EoL/EoL_Industrial&ExtendedLifecycle/D3162-B/BIOS_D3162-B/D3162-B1x.R1.23.0.ZIP
HTTP://ts.fujitsu.com/pub/mainboard-oem-sales/products/mainboards/EoL/EoL_Industrial&ExtendedLifecycle/D3162-B/BIOS_D3162-B/D3162-B1x.R1.23.0.ZIP
ts.fujitsu.com/pub/mainboard-oem-sales/products/mainboards/EoL/EoL_Industrial&ExtendedLifecycle/D3162-B/BIOS_D3162-B/D3162-B1x.R1.23.0.ZIP
fujitsu.com/pub/mainboard-oem-sales/products/mainboards/EoL/EoL_Industrial&ExtendedLifecycle/D3162-B/BIOS_D3162-B/D3162-B1x.R1.23.0.ZIP
I found it, at least I think, it's D3162-B1x on their site, what a terrible mess they have with download file links!
I assume it's this BIOS, neither matched what you gave above, so????
Link to main download - https://support.ts.fujitsu.com/IndexDown...3D-8947C6DBEF29
Link to actual BIOS download
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http://webdownloads3.ts.fujitsu.com/download/FileDownload/fileDownload.aspx?SoftwareGUID=CCACC3C8-259C-4040-9F3D-8947C6DBEF29&FileFolder=Downloadfiles&FileTypeExtension=EXE&FileNameClient=FTS_D3162B1xFlashBIOSUpdateDeskFlashInstant_V4653R1230_1119339.EXE&Token=LjEqMyovLS42KjUqLjYpLQ==
Resulting file downloaded >> FTS_D3162B1xFlashBIOSUpdateDeskFlashInstant_V4653R1230_1119339.exe
Which extracts to this BIOS Update file >> D3162-B1x.R1.23.0.DFI.bup
Is that correct? I assume so, now it matches what you mentioned after I extracted it
And then finally, after all extractions... we arrive at a real BIOS file >> D3162-B1.UPD
* Edit please add at least one image of each BIOS section you can currently see (Main, Advanced, Boot, Save and Exit etc). Put in a zip or 7zip, thanks