well my bionic was rooted and just a couple days ago it got updated to 6.7.246.xt875 etc. after the update finished this error message "unfortunately android.process.com.phone stopped working" or something like that. so i just factory restored and it was like brand new. but now i want to unroot my phone so i used rs lite and when it unzipped files and stuff, it told me flash failure. now every time i turn on my phone AP fastboot flash failure screen shows up. is there a away to get rid of the flash failure so i can unroot it or something?