Hi I have an iPhone 4s with IOS 5.1.1 which stocked during a self update and now is in recovery mode . I need to recover contact data which is critical. I have no backups and tried many recovery softwares such as wondareshare Dr. fone and others but they cannot recover files either in dfu or recovery mode. also tried tinyumberella and reiboot to kick it out of recovery but they all freeze. can anyone give me a hint or solution for this?