I'm on an iPhone 5, upgraded to 7.1.1 and jailbroke with Pangu. I got the system icons like mail, notes, SMS, safari, etc. to replace using iFunBox, but when I try to replace user application icons for apps that I downloaded through the app store (Instagram, Shazam, Chome,) they seem to be write protected. I cannot delete or replace any of them, they just revert to the original. Anybody have the same issues? This method worked fine before the upgrade.