Ahh that explains a lot, i bet i just messed up the flash the one and only time i used the right OEM. DOH!!!
Edit: Tested, and worked perfectly. I can confirm now that the one at
http://www.ppcgeeks.com/files/sprintextendedoem_199.zip is the one of the 3 posted that works properly hehe. You might want to take down the ones that don't work if ya can so others don't do what I did