Before running iREB, put your device into DFU Mode.
iREB was a product of its time, specifically the iOS 4 era. Modern iOS versions (iOS 15 and later) have significantly enhanced security measures, making the jailbreak techniques of the past obsolete. The introduction of Secure Enclave, hardened kernel protections, and advanced signature checks make a tool like iREB ineffective on modern devices. Consequently, iREB development ceased years ago, and the tool is now considered a historical artifact of early iPhone customization. ireb 40x 41 rc2zip 1 hot