Haven't been jailbroken since 4.1, and recently updated to 5.1 w/ 1.59.00 BB (GSM iP4 32GB). Decided to go ahead with the tethered JB using Redsn0w. I realize that I have to boot tethered right after the JB. Funny thing is, though, as soon as the JB was done, I was back at the springboard without doing the "just boot tethered" step in Redsn0w. Cydia was a white icon, and would not launch. Likewise Safari would not launch. SMS appeared to work (did not crash on launch), but I didn't try to send a message, either. From what I can gather, this appears to have functioned just like a semi-tethered JB - odd. I re-launched Redsn0w, and went through the "just boot tethered" step, and the phone came back up after about a minute with Cydia and all other apps I tested working. Any ideas as to what causes this, or is this how it should work? I know if I turn the phone off/restart it, I should have to boot tethered, but is there a chance that I will still have some functionality as I did immediately after JB'ing? Any insight as to how this happens and if it is repeatable on a consistent basis would be appreciated. Thanks!