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TheUnlockr said:Here is the S-OFF procedure.
Works for the following:
HTC G2 (T-Mobile G2/HTC Vision)
HTC Desire Z
HTC MyTouch 4G (T-Mobile MyTouch 4G)
Universal HBoot Security Off (S-OFF) for Use After Visionary Method | TheUnlockr
AND here's how to load a custom rom after using the S-Off procedure above for the same phones:
How To: Load a Custom ROM on a Phone After Using Visionary/HBoot S-Off | TheUnlockr