: If the touch keys on the side panels cease functioning, enter the factory menu and execute the Touch Key Study wizard to reassign properties to the physical capacitive buttons. If you'd like to narrow down the instructions, tell me:
Unzip the firmware files and copy the YZH_9217... or similar update files directly onto the of the USB drive (not in a folder). 3. Flash the Firmware Plug the USB drive into the head unit. yt9217b firmware update android 10 upd
[Windows PC] ---- USB Data Cable ----> [YT9217B 4-Pin USB Port] Step 1: Install Necessary Software : If the touch keys on the side
If the stereo boots up normally, use the internal settings menu to flash the software: yt9217b firmware update android 10 upd