1) Can you still use iCloud with a jailbroken iPhone to backup and sync various things (such as photos (PhotoStream), documents, app data backups, complete backups, etc)? 1.2) I understand that the procedure to jailbreak is: backup -> jailbreak. Afterwards, can I continue regular backups using iTunes / iCloud, via both physical hard-wire cable connection and wireless WiFi connection? 1.3) I understand the procedure to un-jailbreak is: restore from backup. What backup? The original backup BEFORE the jailbreak? If so, what about all the changes done to the phone between the jailbreak and the time you want to restore (such as Apple App Store app purchases/downloads, settings, iMessages, game progresses, etc.)? 2) Can you still purchase, and use purchased, apps, videos, music, etc. from Apple Store? Thank you.