What software do you use to license by serial? I used putty and kitty but neither allows me to write
I use XCOM.You can download and use it.
If I search for xcom, I only get a game
You can try this.
use Arduino or any terminal program and send AT+CDKEY=3BEF26XXX3E4D765XXXAC41XXX255ABB
unfortunately the gateway does not return characters
However, the AT command accepts the license
and inserts the license into the chip
I used czech Hercules is great utility if you are working with the serial devices https://www.hw-group.com/files/download/sw/version/hercules_3-2-8.exe
the problem was the firmware version, thank you very much