how to OTA update a WIO LTE CATm1 tracker

I have a WIO LTE CATm1 tracker. I am trying to figure how to do an OTA update of an arduino sketch. I have found AT commands to update the firmare of the ublox modem, but not the arduino sketch. How can i OTA update the arduino sketch?


I found an example code for STM32-Arduino, I guess it has a reference value for you.