How to restore original Boot Loader, Radio and ROM ?
I have two P3600i,
one is running factory settings (boot loader, radio and rom)
another one is running upgraded settings (boot loader, radio and rom)
however, the upgraded one is not stable
sometime it hang during loading of Windows
when the problem exist, it hang forever even I soft-reset
and the only solution is Hard Reset
within 5 days I already hard reset for 4 times
as a result, I would like to restore the upgraded one to original setting
is it possible to do? what are the steps?