Choyong LC90
Video Tutorials

Connecting to a 2.4G WiFi network.
https://www.youtube.com/watch?v=RzjZe5cF1Gg

Adding a radio station
https://www.youtube.com/watch?v=-f5l8MiUeEo

Firmware updating via WiFi.
https://www.youtube.com/watch?v=TMwNuXgVu20

Rebooting "frozen" radio.
https://www.youtube.com/watch?v=c65nRdoUYHY

How to display IMEI number.
https://www.youtube.com/shorts/8tb8xfam7eo

SIM card use.
https://www.youtube.com/watch?v=1BqmBt0HPQE