so i have already downloaded and bought apps off of the appstore 1) if i jailbreak can i continue to use those apps? 2) where can i find the firmware for a microsoft based computer iphone 3G 2.2 firmware Jailbreak? 3) if i jailbreak all my contacts will disapear? or do they stay on the phone? 4) when i jailbreak can i restore from a backup to get contacts and bookmarks previously used?