Seeking Advice on updating FWAA firmware

Hi all. I’d like to update my Fwaa with the latest Anduril 2 features and maybe try to get lower lows.

I’ve looked at many threads and this seems the most helpful for choosing the firmware and config files.

https://www.reddit.com/r/flashlight/comments/vhuj88/fwaa_updated_anduril...

But I’m not sure how to use the 2 config files.

I’m using AVR dude as the software. I have Hank’s emisar flash kit with an soic8 Sop8 clamp coming.

Can some one help walk me through?

Also, any tips for enabling a lower low?

I’ve flashed Emisars, TS10 and Sofirn sp10 PRO and sc21 pro before.

Also, can I use this setup on older ATtiny 13 drivers?