How to update BeagleV Fire and Ahead?

I have a BeagleV Fire and a BeagleV Ahead that I haven’t used in several months. Since I last used them, both no longer are running a supported version of Ubuntu - they’re both running “lunar” - and the Fire no longer connects to the internet via an ethernet cable to the switch on the back of my router.

So I have very few options for moving forward with either device. Is there some way I can flash them with a current and supported general-purpose Linux, preferably Ubuntu 24.04 LTS, which is supported up to April of 2029?