A power outage during flashing, a bad USB cable, or a faulty SD card can corrupt the raw DTB data. Even one flipped bit will cause the verification to fail.
partition after writing it to the device's internal memory (eMMC). The DTB is essential as it tells the hardware how to communicate with its various components (Wi-Fi, RAM, CPU). CoreELEC Forums Common Causes Checksum Mismatch: Uboot Partition Aml Dtb Verify Patition Error Result