My friend asked me if i could flash a newer android version on her i9000 that is still stock 2.3.3 , never rooted or flashed. I've owned a i9001 and i9300 so i'm familiar with odin and flashing of samsung devices, my only concern is that i've read a lot about losing IMEI and thus mobile signal. i've also read that it's not advised to flash to a JB version directly from stock 2.3, is that right?
So basically if i want to flash one of the 4.3 or 4.4 roms what's the procedure here? Are there any special steps/precautions before flashing over 2.3.3 ?