Apologies upfront if I am redundant. I have read through MANY blogs on MANY sites (including this one), trying to understand the current situation. New iPhone user (purchased in January of this year). Sadly using AT&T (had hopes of transferring to Verizon this summer, which have now been dashed). Obviously went thru the February update, before I knew anything about JB & unlock and SHSH repositories. The main function I want is the ability to tether. I have read differing accounts of what is possible: 1) most folks are saying to wait for the Spirit JB, which now has an unknown release date 2) I found a few posts that say you CAN downgrade an mc 3GS using the restore function and a downloaded version of 3.1.2? and then follow with redsn0w? Has anyone tried the downgrade on an mc 3GS 3.1.3? What are the likely problems if I try this? I would like to try, but since I am not exactly a tech geek or a mac expert, I am a bit hesitant. Any suggestions? Thanks!