The one for my 2016 era fuji is crap. Camera remote. Usually the connection fails between my phone and the cameras own wifi network it connects to but this failure takes a good 2 minutes to happen. So many artificial software limits with this camera, some removed in newer versions. Why can’t this one tether though? It is literally a digital camera no?

Anyone know of any fujifilm firmware jailbreaks fwiw?

No jailbreaks/CFW as far as I'm aware sadly.

You might be able to use XApp instead, which is still crap but better than Camera Remote at least.