Download the official stock firmware flash file for Otto from our collection below and follow the recommended flashing instructions.
If your device firmware is not listed here already, post in the comments section so we help you get.
Download Options
Otto R15 Pro – Download
Otto P20 – Download
Otto F5 – Download
Otto X8 – Download
Otto V7 Plus – Download
Otto P20 Pro – Download
Otto J7 – Download
Otto G6 – Download
Otto A8 Plus – Download
Otto Note 8 – Download
Otto S9 Plus – Download
Otto S9 – Download
Otto Mark II – Download
Otto Mate 7 Plus – Download
Otto U2 – Download
Otto F7 – Download
Otto V9 Plus – Download
Otto F3s – Download
Otto Y69 – Download
Otto V9 – Download
Otto R11S – Download
Otto F3 Pro – Download
How To Flash
After downloading any firmware from the above links, unpack and extract all its content to a folder then follow the instructions here to learn how to flash if its Mediatek (MTK).
If you downloaded an SPD firmware, please follow the flashing instructions here instead.