If iTunes detects a custom, modified firmware bundle while the device is in standard DFU (Device Firmware Update) mode, it immediately aborts the process and throws a 16xx series error.
The 4.1 RC2 version expanded compatibility to a wide range of "Limera1n-compatible" and older devices: 2G, 3G, 3GS (Old & New BootROM), and iPhone 4. iPod Touch: 1G, 2G (MB & MC), 3G, and 4G. iPad: Original iPad (1st Gen). Apple TV: Apple TV 2. Step-by-Step Tutorial: Using iREB 4.1 RC2
To help me provide more tailored instructions or links, are you currently trying to , or Share public link iREB 4.0.x 4.1 RC2.zip 1
Browse and select your target custom .ipsw file. iTunes will flash the firmware completely free of 16xx validation hurdles. Troubleshooting Common Errors Issue Encountered Root Cause Definitive Resolution Poor USB handshake or modern driver conflicts.
iREB 4.0.x-4.1-RC2 is a legacy utility for Windows, developed by , primarily used to bypass 16xx errors If iTunes detects a custom, modified firmware bundle
Mastering Legacy iOS Restores: The Ultimate Guide to iREB 4.0.x / 4.1 RC2
: Once the screen turns green or iREB confirms success, you can open iTunes and Shift+Click (Windows) the "Restore" button to select your custom IPSW. Technical Note The "RC2" in the filename stands for Release Candidate 2 iPad: Original iPad (1st Gen)
Because this is legacy software, you must run it on older operating systems (like Windows XP or Windows 7) and use an older version of iTunes (such as iTunes 10.x or below 11.1) to avoid compatibility crashes.
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Close iREB and open iTunes. Hold the Shift key (Windows) or Alt/Option key (Mac) and click Restore . Select your custom IPSW file to begin the process. Troubleshooting and Legacy Status