Do not rename this file, as the system looks for the specific "update.zip" naming convention to initiate the flash process. Step-by-Step Installation Guide
If you are unable to find specific apps on the Google Play Store after a firmware update, you can manually install them via files. Mecer Xtreme S6 Smart Android Mini PC - Laptop Direct Mecer Xtreme S6 Mini Pc Firmware Download
Look for a file typically named update.zip specifically categorized under the S6 or S6+ folder. Do not rename this file, as the system
Copy the downloaded update.zip file directly to the root directory of the USB drive (not inside any folders). Do not rename this file
Plug the USB drive into one of the S6's USB 2.0 ports. A prompt should automatically appear on your screen asking to install the update.