The phone will automatically search for the latest version.

If you can't get the update wirelessly, you can download the firmware file and install it manually. S1 Pro Funtouch OS PD1945F_EX_A_9.78.14 System Update

Make sure your battery is at least 30% or connected to a charger.

Newer versions like Funtouch OS 12 and beyond may be available via official regional support portals . How to Download and Update Automatically (OTA)

This is the simplest method and is recommended for most users.

Go to Settings > System Update (or System Upgrade ).