Should I Jailbreak & Unlock my iPhone 3GS???
I have a 3GS (MC) with 4.1 Firmware (8B117) and baseband 06.15.00. My original thought was to jailbreak & unlock the phone so that I can switch from my BB 9700 to this. A few questions from some reading came up along the way which I am hoping other people's experiences can shine a light:
1) Should I stay at 4.1 or go to 4.2.1. If so, should I upgrade the firmware through standard iTunes or use Redsn0w?
2) If I Jailbreak and Unlock the phone, will Push Mail work in this mode? I've read a number of issues but they all seem to be related to the older phones and older OS'. I want to get my GMail on the phone instantly like I do on my BlackBerry.
3) Once Unlocked, I assume I can take my SIM card from my BB 9700 and use it in the 3GS. Any issues here?
Any other technical issues/concerns other than the standard no-support, no warranty... that I should be worried about?
All comments and past experiences are greatly appreciated.