A lot of the forum posts were lost during some backup so whatever’s left (or could be retrieved) is here:mac27040 wrote: ↑Wed May 24, 2023 10:13 pm a guy on the bmw 5 forum called richard continued the development of the firmware, however the unit has such a small memory it was difficult to add more features. the forum doesn't exist now so don't know if it got developed anymore than the version i have.
https://www.forum5.co.uk/forum/67-intravee/
There’s a sub section for “older posts” where you can dig through the archive but you’re at least able to download the latest firmware