Ok my bootloader is 30.03 so i downloaded the VRZ_MB810_2.3.15_ff_01.sbf and i've tried to sbf it a couple times and i either get a fail or I get stuck in a bootloop and can't get into the place to clear my cache and wipe data. Do you think I got a bad file?
If you got stuck in a bootloop, then it succeeded.
--Pull the battery.
--Hold the HOME button while putting the battery back in. It should start to boot. Hold HOME until you see the M logo.
--It should boot to the Android Recovery screen (lil droid with a ! in a triangle). When you see this screen, press the SEARCH button on the phone, which will take you to the Android Recovery Menu
--From the menu, wipe cache, wipe data, and reboot.
... then upgrade, root, bootstrap, and you're off!