TO ALL USERS WITH IPHONE PROBLEMS IN THE PAST (UNTIL TONIGHT).
NOT talking about hardware ones.
Since to the release of the latest
Jailbreak, keep in mind that all users who had problems relating to being
stuck on Apple logo, or recovery mode, unable to restore (error 3194 on 3GS), password locked iPhones, disabled iPhones, YOU CAN NOW safely upgrade to 4.0.1 and Jailbreak your devices.
Those problems were only because the jailbreak wasn`t out yet and Apple took out any restoration possibility on 3.1.3 or 3.1.2 firmwares (i`m talking here more about 3GS).
Many threads have been posted about the new Jailbreak, so please look them up, this is just to let you know about the solution the jailbreak come with relating to the old problems.