huawei p9 lite (vns-l31) stock rom backup

himy bros i need stock rom but I can't return to the old rom. and i thought maybe somebody send me the stock rom backup. I spent 1 day to go back to the old android 7 rom but I couldn't return, this is my last hope. pls help me. and i live in turkey.I think we are using the european rom file.sory for my bad english

edit: i need twrp backup file
and you backup this file
boot
cache
cust
oeminfo
product
system
vendor
version

pls help me