help: upgrade jb 4.0 to untethered jb 5.01

i have a CDMA 4.0 iphone running 4.2.8(8E401). I JB using jailbreakme.com and has been working fine. i want to upg to JB 5.0.1 untethered but i'm...

puts the internet to work for you. via task 358721