Hi guys, after a long battle I managed to upgrade my unlocked/jailbreaked iphone 3G to iOS 4.1 (without changing the baseband - i used Pwnage Tool 4.1.2 and ultrasn0w). I have now reception with my German carrier and everything is great, BUT whenever I try to tether with that iPhone (either USB or Bluetooth) the screen flashes and then only shows the pineapple. What do I have to do to make it work again? (After the initial jailbreak/unlock 2 years ago with quickpwn the tethering worked just fine). Thanks!!!