Originally Posted by lowirve
I have converted att os to developer edition. Even though the build is 1.29.1540.17, baseband is still 4A.14.3250.13, which is the original.
Need to do adb shell while in recovery then:
dd if=/sdcard/radio_firmware.img of=/dev/block/mmcblk0p31
"radio_firmware.img" to be changed to whatever the name of the radio file is.
Also, I'm not sure if this command works in stock recovery. All posts I've seen say do this in custom recovery.
If it doesn't work, just flash custom recovery, flash radio, then flash back stock recovery.
Also why do you need OTA and Developer Edition conversion? If you're s-off and unlocked, it's easier to be up to date using either custom ROM or even stock ROM of international version and flashing radio/firmware as necessary.
Sent from my HTC One using xda app-developers app