All credit goes to TheUnlockr
TheUnlockr said:Another one
This is a universal method that works for the following phones.
HTC G2 (T-Mobile G2/HTC Vision)
HTC Desire Z
HTC Desire HD
HTC MyTouch 4G (T-Mobile MyTouch 4G)
This gives persistent root access even after reboot. No video yet, but will add it ASAP
Universal Android Rooting Method (Visionary Method) | TheUnlockr