RM520N-GL ADB enabling

Hello.

I’m trying to enable ADB on the RM520N-GL module (Revision: RM520NGLAAR03A04M4G, firmware RM520NGLAAR03A04M4G_A0.301.A0.301), unfortunately on AT+QADBKEY? getting ERROR. Does it mean that my module is not supporting ADB?

Thanks in advance!

Ah, I realized that ADB is not supported by .301+ firmware. My bad, was confused by some other forum topics. Feel free to delete/close this topic, sorry.

Dear @abolshev
Yes, after .300 version ,this AT command is removed.
But it has other way to enable ADB.
Or you can use older firmware to enable ADB, older firmware supports this AT command.