@lfb6 @Plastixx
Update:
BIOS flashed successfully, Notebook booted successfully, SN/UUID restored to their original values.
if I had a programmer at hand in the first place, I could just did what @Plastixx asked me to do since the beginning. but thanks anyway.

Still have one question: @lfb6 You said

Zitat

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Both bios seem to have this "flaw". Even for stock bios the Flash Map isn\'t displayed correctly in UEFIToolNE. So it\'s possible this error will come again after a certain amount of changes in NVRAM.

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How do I prevent this from happening ? by not using UEFI option ?

Thank you @lfb6 for your assistance and guidance this whole time, god bless you both @lfb6 @Plastixx .

Thread might be closed afterwards.

Glad you got it all as sorted out!

Glad to hear you got it fixed.

Regarding this 'flaw': There are some assumptions regarding the structure/ correct UEFI volume header and this isn't fixed in the last bios version. There might be fixes in the bios code itself that make uncontrolled growth of EVSA store less likely- I don't know. But many of these 'early UEFI flaws got never fixed.
You have a working backup of your own bios- in the worst case you just have to flash it back! Just use this machine normally without thinking too much about it- you'll proably never experience it again- and if it happens you know how to fix it

Zitat von lfb6 im Beitrag #34

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Glad to hear you got it fixed.

Regarding this 'flaw': There are some assumptions regarding the structure/ correct UEFI volume header and this isn't fixed in the last bios version. There might be fixes in the bios code itself that make uncontrolled growth of EVSA store less likely- I don't know. But many of these 'early UEFI flaws got never fixed.
You have a working backup of your own bios- in the worst case you just have to flash it back! Just use this machine normally without thinking too much about it- you'll proably never experience it again- and if it happens you know how to fix it

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@WGenius Good to know it's all sorted out. Thanks for letting us know.
Just to be clear: did you flash with the programmer or Intel FPTw ?