How to Upgrade Android 12 Devices via MicroSD card

Follow these steps precisely to upgrade your device's firmware using an SD card:

Copy Update File to SD Card
Download the update.zip file. Copy only this file directly to the root directory of the SD card. Insert the SD card into your machine's SD card slot.
Run SystemUpdater
Power on the device and let it boot fully to the Android desktop. Open the SystemUpdater application. Click the **COPY AND UPGRADE button. Wait approximately 30 minutes**. The upgrade is complete once the device boots back to the desktop.

If Upgrade Does Not Succeed:
First, perform a recover factory setting on your device. Then, repeat Step 3