To make a really long story short, after Sprint's recent ota 5.07.651.1 (the update that came with the Sprint connections optimizer) was installed on my phone, I could no longer download or update ANY apps on the android/google play market while connected to 4G. Went to the Sprint store to get it fixed, they tried and failed, got a new replacement handset with ota 5.07.651.1 already installed, same exact issue. Reached the conclusion that the update screwed things up. Downloaded and tried to use this RUU file to revert back to the old build right before this one (4.67.651.1): http://forum.xda-developers.com/show....php?t=1484240 This was unsuccesful as the error message it gave me said: ERROR : BOOTLOADER VERSION ERROR The ROM Update Utility cannot update your Android phone. Please get the correct ROM Update Utility and try again. My hboot is 2.18.0001, is there a version of the above RUU file that is compatible with my bootloader version?