As you already know, in the last few days there have been various unofficial methods to jailbreak iOS 4.3, methods that do not work as they should for everyone, methods that should be ignored for the time being. I told you a few weeks ago that iOS 4.3 has implemented a new security protocol called ASLR which would have the role of making it difficult to exploit the system through jailbreak. Considering that iOS 4.3 can be jailbroken on any iPhone, iPod Touch and iPad (except iPad 2 for now) using limera1n, Dev Team only had to find an exploit for untethered jailbreak and fortunately they found it.
Even if it would be possible to do an untethered jailbreak on iOS 4.3, there is still a big problem that this protocol ASLR it causes it, more precisely it prevents the use of mobilesubstrates. It seems that on iOS 4.3 mobilesubstrate does not work properly and leaving aside the tweaks in Cydia that need it, ultrasn0w needs it. So in order to have an unlock solution, we must first have mobilesubstrate, without it we cannot unlock. I don't recommend jailbreaking iOS 4.3 for now, let there be an official and problem-free solution.
