You may have flashed a firmware version that is too new. Some users with the Infinix X670 (MT6781) found that they could not flash the latest Android 13 ROM, but flashing an older Android 12 ROM worked perfectly, after which they could update via OTA.
These are necessary for the PC to recognize the device in BROM mode.
The authentication file ( auth_sv5.auth ), if required by your specific bypass methodology. Step-by-Step MT6781 Flashing Protocol mt6781 sp flash tool exclusive
Choose Firmware Upgrade only if you are recovering from a severe hard-brick or upgrading major Android versions.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. How To Use SP Flash Tool (Full Guide) You may have flashed a firmware version that is too new
The tool's primary function is to install stock firmware (ROMs) to upgrade, downgrade, or repair a device's operating system.
The newly flashed system data is conflicting with residual cache data in the un-flashed user partitions. The authentication file ( auth_sv5
MT6781 devices cannot be flashed with older versions of the SP Flash Tool due to the UFS 2.2 storage controller and updated security architecture. Download and install the following specific files: 1. SP Flash Tool (v5.2136 or Higher / v6.x)
Newer MT6781 units ship with and DAA (Download Agent Authentication) enabled. A standard tool will throw the infamous STATUS_SEC_AUTH_FILE_NEEDED error. The exclusive version includes pre-loaded authentication certificates or a patched auth_sv5.auth file.
Hold the keys again and plug in the USB cable.
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