Hi, sorry for not replying back for so long.
1. I try to change the settings regarding bootup (disable uefi, changing bootorder).
1.1 The changes are marked yellow and are in fact changed.
2. Then I exit using F10 and then [z] (german layout)
2.1 The computer resets.
3. While Bootup I hit F2 at the apropriate time and look for the settings I changed.
3.1 They have the initial value.
PS: It still works to set and reset passwords
EFI should be able to change BIOS settings even if there is an invalid setting in the EFI-BOOTMENU-FLASH...(It should even be possible to reset this said bootmenu) There sould be some place to create firmwarebug tickets every open source project has such a thing why are the big companies so resistant to improving their software?