Published by: Tech Recovery Labs Target Device: iPhone X – iPhone 13 series (A11–A15 chips) Tool Version: Sliver 6.1 (and 6.2 beta) Credit: Methodology by AppleTech752 Introduction: What is the "Sliver 61" Error? If you are reading this, you have likely encountered the dreaded "Sliver 61" error while trying to use the Sliver tool to perform a jailbreak-based iCloud bypass on a modern iPhone (iOS 15–16). You are not alone. Since the release of Sliver 6.1, thousands of users have reported the same cryptic message: "Error -61: Unable to send the final data packet. Device rejected command." This error typically occurs during the critical phase where Sliver attempts to write the new activation records to the device’s FairPlay partition. Until now, most online guides have offered generic advice that fails to solve the problem.