I tried to install. rxtools.. cakes FW.. but none seem to be up to date to work for my firmware? everything is missing.. on rxtools.. the firmware.bin is missing.. (i cannot download from the script in the zip file.) on cakes fw.. the firmware.bin is never matching.. seems like i cant do anything on 4.2.0-9u? should i update to 9.2.0? please any information would be great been stuck here for awhile.