Yes it will completely wipe your phone.... it will not wipe the SDcard and if your phone is backed up to your Google account, most of your "stuff" can be restored easily....... if in fact the phone is currently rooted you can manually copy /data to your SDcard and then to your computer(to be safe)..... (/data contains all your downloaded apps, call logs, SMS etc....)
... telekinetically tapped, tenaciously traversing the terrain ...
no phone isnt curently rooted thats what i been doing all this stuff all day for all i want is to get it back up on being rooted
the installing the 4.1.2 jelly bean only took like 20 minutes this morning at like 3 am i been trying to root it since 4am i give up im not re doing the sbf it took me almost 7 hours just to get all my apps and everything back on because i had to do it manuly and im not worred about the content that google backs up google dont back up apps the apk file and the app data i have backup pro but i had to after that unzipped all my apps i had to push install done install done for over 489 apps im not doing it again screw the root