Install and open Razer Synapse on your PC
Connect the Razer Viper V3 Pro with the USB cable or wireless dongle
Make sure the mouse is powered on
Check for a firmware update prompt in Synapse
Follow the on-screen update instructions
Keep the mouse connected until the update finishes
Restart the mouse or PC if prompted
Reopen Synapse and confirm the firmware is up to date
If no prompt appears, visit the official Razer support page
Download the latest firmware updater for the Razer Viper V3 Pro
Run the updater as administrator
Follow the updater instructions until completion
Disconnect and reconnect the mouse if needed
Verify the update version in Synapse or the updater tool