Hello Maplesyrup999,
To start off, you don't have to do anything special to update the AirPods Pros firmware. As explained in this support article: About firmware updates for AirPods. "Firmware updates are delivered periodically while your AirPods are charging and in Bluetooth range of your iPhone, iPad, or Mac."
If you are experiencing audio issues with your AirPods, this article's steps may help: If your AirPods Pro (1st generation) make crackling or static sounds. Follow this guidance:
- "Make sure that you have the latest software on your connected iPhone, iPad, iPod touch, or Mac.
- Check that your connected device is nearby, and there's no wireless interference or obstructions between you and your device.
- Listen to audio from a different app to see if the app causes the issue.
If you still experience sound quality issues—or if the issues increase in loud environments, with exercise, or while talking on the phone—refer to AirPods Pro Service Program for Sound Issues."
Let us know if we can help with anything else at all or if this doesn't settle your issue so we can look into this further with you. Thanks and have a fabulous day!