I have the 1st gen 16gig iPhone, tmobile, version 1.1.4, jailbroken/unlocked. I have tryed upgrading useing the method that creates the 2.0 custom firmware but iTunes crashed half way thu and basicly never worked. I want to get app store. There's people clamily the can unlock and jail break the latest firmware in 15 minutes. What would be the best method for me to follow and safely upgrade my phone?