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How to Fix Xhorse Multi-Prog System Version Is Outdated 4133AAAA Error?

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Issue & Fix Statement: The XHORSE Multi-Prog displays the error: “The device system version is outdated and requires a system upgrade first (4133AAAA).” This issue is caused by an outdated firmware state, and it can be resolved by entering forced firmware upgrade mode and performing a system update. Technical Explanation This error occurs when the MultiProg device firmware version does not meet the required system version check during startup, resulting in a version mismatch. Diagnostic / Action Steps 1. Press and hold the RST hole button.  2. While holding it, turn the power on the device.  3. Keep holding for about 5 seconds after powering on.  4. The device will enter forced firmware upgrade mode.  Final Result After a successful firmware update, the 4133AAAA error will be cleared, and the device will return to normal operation. www.xhorsetool.co.uk