Ensure you have the proper OEM signing keys if you are manually modifying the OTA package . 2. Developer Post: Software Distribution
Transfer the file to the /system/ directory or root of your SD card. Reboot the device into Recovery Mode. Select and choose the file. Diba Updatedzip
Always provide an MD5 or SHA-256 hash so users can verify the integrity of the Updated.zip . Ensure you have the proper OEM signing keys