To Update the Firmware If you have a new firmware file you would like to update to, use the following instructions. 1 Select O2 Optimizer >Update Firmware. 2 Select the device to update. Each device will need to be updated separately. 3 Click Update. 4 Browse to the location of the firmware file. 5 Select the file. 6 Click Open. PCV Software will update the attached device. You will need to reboot your computer once the updates are complete.