1)Download the RUU here:
2)Copy to the root of your sd card
3)Boot into bootloader by either using quickboot from market or pulling battery and holding power+volume down until you see bootloader.
4)Bootloader will scan for PG86IMG
5)Click power button to select install for the file
6)Bootloader will now install, you are now on the stock sprint ROM
7)Now plug your device in, and navigate to the fastboot setting from the menu and select it(power button)
8)Open CMD with the fastboot files in with the adb files
9)Run the command "fastboot oem writesecureflag 3" without quotes
10)You should now be 100% stock unrooted and s-on!
Included is the fastboot and adb files, when you get to step 7 run the start here, and get into fastboot on your phone either through bootloader or typing 'adb reboot bootloader' while having your phone on charge only mode. then continue on your way to s-on(:
Download fastboot and adb files here:
*Remember never do this with the eng hboot, you could brick, only do this on ship hboot!
I am not responsible for anything that happens to your device!
Maybe someone can convert this into a flashable zip that would automatically do the steps for you?