I have one ALFA Tube-E4G (MT7620,64MB RAM, 16GB Flash) with RAK2247 module (USB, US915). But I don’t know how to build OpenWRT SNAPSHOT version with RAK2247 firmware.
I cloned https://github.com/RAKWireless/RAK2247-RAK833-LoRaGateway-OpenWRT-MT7628, built it and flashed the image to ALFA Tube-E4G but boot up was stuck. And then I was using OpenWRT SNAPSHOT to build firmware according to ALFA Tube-E4G profile. And it can boot up and works. However, I don’t know how to build RAK2247 firmware into OpenWRT SNAPSHOT version. Anybody can help?