Jailbreak tip... 
  
Download iuserbar.  Find it with google, will give up to date info on where to get an how to jailbreak. 
  
You can get flah support using a version potted from Htc named frash.   
Install sbsettings and the frash toggle to save your battery life.   
Greenpoin can jailbreak up to 4.2.3 
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