im trying to downgrade but i get error code (1) and error code (5) it depends i also cant seem to downgrade my bootloader from 4.6 to 3.9 is that needed to downgrade? 1, uninstall 7.7 2, install 7.5 3, put in dfu (black screen, also tried recover mode with usb logo) 4, shift click restore select firmware needed i think thats all i do..