I keep having severe trouble with my two lilygo t-echo node devices.
I had flashed firmware v 2.5.0.9e55e6b on both of them by means of flasher.meshtastic.org following the instructions (which is in fact to be done by downloading the firmware file and dragging it on the device connected and coupled as usb drive), and they both worked well.
I used android meshtastic app v 2.4.4 on android 13 to configure both devices via bluetooth, and to import and export cfg-files.
Then I allegedly made the mistake to use an earlier meshtastic app v 2.3.15 on android 14 from a second android mobile device to import cfg-files, which had previously been exported using a first one with the later android app v 2.4.4.
This seemed to corrupt something on the nodes, the t-echo devices both froze upon reboot.
That is, I was afterwards able to flash the firmware again to both t-echo node devices by means of the web flasher app in order to bring them back to working. Flashing would however not sweep the previous configuration on the devices.
And then neither bluetooth (which is now inactive on the node devices) nor serial would ever since connect from both node devices to client.meshtastic.org following the instructions. That is, the actual configuration parameters of the nodes would not show up upon successful serial connection, and changes would not be saved or transmitted to the nodes upon saving within the client interface web app.
Any suggestions for a solution (macos or linux, only!) to this are warmly welcome and appreciated!