[kaoss_11]

i personally have it on my phone and the easiest and fastest way is to use UNREVOKED. use the custom image option and your done. that easy. works every time for me flawlessly.
be sure which psfmod image you use as well because one turns your phone into a device where you can downgrade your ps3 from 3.50 to 3.41. if you are already on 3.55 then stop because there is no way to downgrade from 3.55...... yet

all other images make or turn your phone into a jailbreaking device so just pay attention and read. everything is reversible with your evo but just trying to save you some aggravation, time and trouble shooting