I downloaded the update and it seemed to help improve my GPS (not perfect but noticeably better than before) Later however I had to do a factory data reset to make my gmail partner page the primary account so that I could access my google calandar for work. After doing the reset my GPS is as bad as ever. I can't just re-update because I already have the update. I feel like the reset might have reset something - maybe the "fix" changes i had made on the LBStestmode screen - and now I need to change them. For example the factory reset turned "use wireless networks" option off in settings. The problem is i can't get back to the LBStestmode screen with 1472365 anymore. I'm calling samsung on monday to see what they say but I was wondering if anyone knew how to look at those settings now? I haven't rooted the phone yet and I'm waiting in order to make things easier in case I have to try and get a replacement.