Not sure on that, but as you said you need to get the update on device, if there is no way to do this, the flasher may the only other option.
The problem is a factory reset will not touch system, which is what you need to remove the driver stopping boot, placed there by chainfire. There may be a way to get flasher working, last time it was used, k800 firmware waa being used, which haa different radio to osd. I dont know if ricky still has flasher.
Bur then you would think the system img would replace system.
Edited by jikobutsu, 11 October 2012 - 02:59 PM.