I am on 2.3.15 rooted and i tried to update to 2.3.340 and it says update failed. The only thing I can think of is that I deleted some bloatware and I dont think I backed it up, but not much just cityid blockbuster amazon mp3. i wiped data and cache but failed again. I heard that unrooting is not required, so I guess I have to sbf but I heard that some sbf dont work on ota 2.2 and tha it bricks phones. So can someone tell me where to find the right files to sbf, thank you.