In some cases, the error persists because the bootloader is still locked. Attempting to unlock it before flashing may resolve the mismatch.
The most effective "quick fix" for this specific error is to exclude the problematic partitions from the flashing process. Most users find success with these steps: Deselect Specific Images Sp Flash Tool Error Status Sec Img Type Mismatch
In simple terms: the phone expects, for example, a boot image but you’re feeding it a recovery image — or there’s a mismatch in image format (e.g., signed vs. unsigned, or wrong image type for that partition). In some cases, the error persists because the
STATUS_SEC_IMG_TYPE_MISMATCH Tool: SP Flash Tool (used for flashing MediaTek devices) Meaning: The image (ROM file) you’re trying to flash does not match the expected type for a specific partition according to the device’s security authentication. Most users find success with these steps: Deselect
Once you have successfully flashed your device, here’s how to avoid seeing the error again:
Older versions of SP Flash Tool (v5.x) do not recognize the security features of newer chipsets. Using v5.21xx on a Helio G99 device will almost certainly cause type errors. Conversely, using bleeding-edge versions on very old chips (MT6580) can also cause incompatibility.