For people who like to tweak out their phone or allow something simple as wireless tethering, rooting it is the way to go. HTC has made the G2 root-able, but the root is gone when the phone is rebooted. Luckily, the members over at the XDA forum have made a solution for permanent root.
Download VISIONary from Here
On your G2, Go to Menu > Settings > Applications > Development > Enable USB Debugging.
Also, Go to Menu > Settings > Applications > Enable Unknown Sources
Transfer VISIONary to your memory card. Use a file explorer (I use ES File Explorer) and install VISIONary.
Find VISIONary on your phone. Press TEMP root and wait a minute. After that, press PERM root and you now have a rooted G2!
To verify it is rooted, restart your G2 and see if SuperUser is still installed.
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