@geekyneo Sorry. I was talking about update channels (and there is a dev(eloper) channel). But your question was about developer mode. If your device runs UT, you can start the ssh server on your device, login and copy files via scp. No need for adb.

@geekyneo I had the same problem with an old UT version on this device, see above https://forums.ubports.com/post/41254
After installing a newer version, I can switch between channels.

@MonCon Nice! Can you edit (refine) the instructions link to help others (or maybe? write a howto)?

@C0n57an71n Oh, I misread your message. I will have a browse in this channel, but maybe a forum is a better place for such topics. Let's see.

@C0n57an71n My question is not related to Matrix, it is about good old "ad-hoc wifi networks" to be found in the network managers of most Linux distributions.

To clarify my question: Both devices should receive stable (local network) IPs and both IPs should have similar rights. The hotspot schema does not fulfill this, I guess. In general, this approach should allow for 3 or more devices that can open sockets to others in the same local network.

I need to regularly connect two UT devices without using the internet. With other OSes, I just created a new Wifi network on device 1 (once) and connected device 2 to it. I could not find such an option in UT (under "System Settings" | "Wi-Fi").

(Note: A solution with a cable would be interesting, but a wireless solution would be somewhat better.)

@Lakotaubp I only worked with the new version (0.5.3 beta). I opened an issue for this: https://github.com/ubports/ubports-installer/issues/1441

@Lakotaubp Booting to fastboot mode before starting ubports-installer did the trick. Thanks. Maybe a message in the start screen of ubports-installer would help ("If your device already runs some version of UT, please ...").

@Lakotaubp Yes, I see no output from the terminal command fastboot devices.