The Moto G64 5G user community is encountering a frustrating issue with Magisk versions 28.0 and 28.1. When attempting to flash a Magisk-patched boot image on this device, the process consistently fails with the error "Preflash validation failed." This problem only arises with Magisk v28+, as flashing a boot image patched with Magisk v27.0 succeeds without errors. This points to a potential incompatibility introduced in Magisk v28.

The affected users are running Android 14 on their unlocked Moto G64 5G devices, with the latest firmware version CANCUNF_G_SYS_U1TDS34.100_46_7_2. Fastboot version 35.0.2-12147458 is also reported as consistent across the users experiencing this issue.

The issue is reproducible by patching the stock `boot.img` file from the device's firmware using Magisk v28.0 or v28.1, and then attempting to flash the patched image via fastboot.

The expected behavior would be for the patched boot image from Magisk v28+ to flash successfully, just like with Magisk v27. However, the current observed behavior is a consistent "Preflash validation failed" error when using Magisk v28+. The original boot image flashed successfully, and Magisk v27 patched boot image also flashed without any error. This clearly indicates a problem with the patching process in Magisk v28+.

The user reports sharing their Magisk patched boot images as well as screenshots of the fastboot error for different versions, providing valuable evidence for investigating the root cause of this issue. Further investigation is needed to pinpoint the exact cause of the incompatibility between Magisk v28+ and the Moto G64 5G, and a corresponding fix should be implemented to ensure smooth Magisk patching for this device.

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