@keneda
thank you keneda,
actually it must have been sp flash tool, guess didnt pay attention, didnt backup.
already checked every tweak, in fact the imei variable is completely empty. reading out all informations with adb nothing in there.
cant find nvram rom ap db for mt6763
maybe i give a try in telegram group...
have a nice day

hello everybody, accidentally somehow installing ubuntu touch or sailfish and volla os again or maybe with sp flash tool ...
imei numbers arent set anymore.
how can i recover or set them?
thank you very much help appreciated
sincerely