it says clearly that i have no idea if it works and that you try to flash it on a spring phone is at your own discretion since i had have no idea if teh block devices are the same in the sprint version
as i remember correctly i had to change the block device for /system to be able to flash it and honestly the sprint version is different and it might have flashed it somewhere where it s not supposed to go
all i m saying is i only guarantee a successful flash on the boost version and even there i can not really guarantee it will not burn your phone to the ground
so the file should be used for what it was designed for but if it worked on yor evo grats ..... i would have been afraid to flash it without prior checking of the block devices on the phone