Help rolling back to stock firmware/TWRP backup?

[Bluesyle]

Hey guys,

I just tried some custom roms for my EVA-L09 and now I wanna go back to european stock ROM, but I didnt ever had tried something like this.
I tried to use the dload way, but it didnt work, because I allready insatalled a custom ROM. Can anybody out there help me?

TWRP 3.1.1 is installed and i got a backup of my current ROM, the backup of the stock ROM I did before flashing is deleted at all.

Thanks for your attention.

 

[patcci]

Can anyone help?

 

[zgfg]

Can anyone help?

Search on P9 ROMs section for HWOTA7
Or older/simpler HWOTA - you will find instructions in Magic Rainbow v4 (also P9 ROMs section) - MR v3/v4 had clear instructuns how to go back to stock, applicable also to other P9 Nougat custom ROMs

Of course assuming that you don't want to go from Chinese Oreo back to Nougat - then the procedure is different but it is also clearly described in the corresponding HWOTA7 thread OP instructuns