so

i tested whatever you guys had mentioned

i made a rootfs folder in media folder of ubuntu

thtn fdisk -I and find a drive with name sdb1

and i used mount /dev/sdb1 /media/rootfs

and then start restore process
but in every line it showed operation not permitted

and after it done , i checked the phone and nothing changed

i enabled developer mode and then backed up rootfs and after restoring the developer mode was disabled


so ?