It may not have been a feature then, but you can run updated firmware and still keep it offline by using Developer Mode.
https://wiki.bambulab.com/en/knowledge-sharing/enable-develo...
I don't trust it anymore. I'm using LAN mode today, I have little incentive to update. If I update to anything, it will certainly be third-party modified firmware.
I don't trust it anymore. I'm using LAN mode today, I have little incentive to update. If I update to anything, it will certainly be third-party modified firmware.