Can you get into download mode?
If so you could pull the rom.zip from the RUU and rename the rom.zip to 0PM9IMG.zip then put on external sd then boot into bootloader and select download mode wait for flash selection volume up and wait til done.
SunShine does not simunlock the M9.
Oh thanks for helping with the western union thing, my third soff device thanks guys
in stock recovery theirs a option to sideload files using adb, iv tried a few files but only gotten to failed verify whole-file signature or wrong footer
Yeah sideload maybe no use with stock recovery
I can root the phone. :)
Been trying to figure out the exact method