I ordered an HT-M00 in Nov 2020. It worked fine. I recently upgraded to V2.0 firmware. The gateway stuck at “gateway starting…” The Com port response showed “M ERR::readConfig, file=/espicense2.txt does not exist” “inside license error”.
I obtained the license with ESP32 chip ID and entered the AT-CDKEY=“licnese #” command following your instruction. But it did not work.
I reloaded v1.9 firmware. It still showed “inside license error”.
What should I do next?