If its not possible that is fine, I just got one for $15 and do not want to pay for a subscription support service. It has a mSata drive in it, I just do not have an adapter or an old computer that can fit mSata. I have a console cable and can get logged in after a factory reset. I just have been looking for a while and can not figure out what to do exactly. Since it uses Power architecture i assume I would not be able to use OpnSense or something.
https://forum.openwrt.org/t/adding-openwrt-support-for-watchguard-firebox-t35/126358
The link above is basically a dead end but it should be possible to pick up where the the original person left off. I don’t think the issue is related to go and I suspect the issue is related to the CPU architecture not matching the compile options.