Jailbroken iPhone 5, 6.1.2, AT&T. Phone had been working fine until I went abroad to Canada. While in Canada I noticed I lost iMessage and Push notification capability. I attributed it to the recent, well documented iMessage outage. Now, back in the USA, I still have the same issues and I also cannot connect to the iTunes Store. I've tried EVERYTHING under the sun short of restoring. If I restore from backup, will I lose my jailbreak? Any suggestions would be greatly appreciated.