For those with PWNed Iphone2G, if you want to try the new 2.1 FW, you have to UPGRADE instead of RESTORE, else you will have an un-activate phone (emergency call screen). After the UPGRADE, your phone will be activated/unlocked and not jailbroken. Overall the contact search and message lag have greatly improve. If you are confuse on what I am saying here, just wait for the official DEV PWN release for 2.1 FW.