i successfully upgraded(jailbreak, Unlocked) my 2G iphone from 1.1.3 to 2.2.1 firmware, using QuickPWN .... restored my contacts, SMSs and all but as expected i lost all my 3rd party applications... NOW THE PROBLEM IS: that this new firmware installed INSTALLER 4 and CYDIA which doesnt have sources like i had earlier... and the good ones are only available at itunes store... SO IS IT SAFE TO DOWNLOAD APPLICATIONS FROM ITUNES ON AN UNLOCKED IPHONE???? Since the registration requires your CREDIT CARD No. i hope there wont be any kinda penalty... i am only planning to download the free applications.. SOMEONE PLEASE PLEASE HELP!!!