i has fail in following the instructions on yellowsn0w.net I HAVE: 8GB iPhone 3G Version 2.0.2 (5C1) with 2.30.03 an Airvoice Wireless card (and it works fine in my 1st Gen iPhone.) WHAT I DID: Created iPhone1,2_2.0.2_5C1_Custom_Restore.ipsw with pwnagetool and restored it with iTunes and named my iPhone. Installed YellowSn0w and BossPrefs via Cydia (I think). In Packages I have Dev-Team YellowSn0w and other team tools and BigBoss's Source, (but I don't know if that's the right one as there were 5 different ones to choose from) Step 2 says to "Disable everything in BossPrefs", but I don't kow what that entails. I tried to turn off Edge, but it would not turn off. Rebooted from BossPrefs Took out sim and reinserted it. It told me I has new voicemail. Waited 1 minute Went to Settings and turned off Airplane Mode and tured it back on. and it made he "Tri-tone" sound. and that's it. Why i has Call Failed?