Post [Q] Possible to make FTF of stock firmware from device?

Only seen two firmware from 4.1.2 (shipped firmware on device), is it possible to make a backup of the ROM from device and make FTF?
Tried SimpleADBBackup, but only make a non-flashable file.
My Devices: SE W960i, SE W980, Xperia X10, Xperia Arc, Xperia V, Xperia Z1, Xperia Tablet Z