[masetas]

if you can get your pc to recognize the phone then just use odin to to revert it back to sprint.. I remember someone told me he was trying to flash a rom or go back to stock rom and forgot to only have auto reboot checked ( in other words had everything else checked) and his phone had to be " re-flashed" to boost cause it had reverted to sprint..

in regards to the esn make sure you are checking the esn located on the phone by the battery to see if its good. before you reverted back to sprint cause if its bad then your gonna have to get someone to flash it to boost if you dont know how yourself in order to do anything with it..