For the Sunmi V2 Pro, the firmware is built on a customized version of Android (often Android 7.1 or variations thereof, depending on the specific sub-model like V2 Pro or V2 Pro 4G).

On the V2 Pro device:

Manual Flashing Workflow (Field Technician)

Before looking for updates, you need to know what you’re currently running. Navigate to . Scroll down and tap on About Device . Look for Build Number or Sunmi OS Version . Updating Sunmi V2 Pro Firmware: Step-by-Step 1. OTA (Over-the-Air) Updates

Firmware Repository & Versioning

: Standard performance maintenance includes keeping the internal memory clear and ensuring firmware is updated through the system settings. Unofficial and "Unlocked" Firmware Sunmi V2 Pro