I flash the bootloader then the firmware (RUI_RAK811_V3.0.0.11.H_Release). However, after upgrading successfully, my RAK811 does not respond to my commands. Even if I reset it, it would not show any data. I am also cautious with boot, 3.3V, and CND pins. Can someone guide me through this?
Update: I tried flashing the firmware v2.0.3.4 and it suprisingly it works. RAK811 would respond to my commands. However, when I flash the firmware v3.0.0.11 back, the RAK 811 would not respond to any of my AT commands again? Any suggestions? Thank you
Hello @leopold,
I want to upgrade the RAK811 firmware, to the latest version. But I get error message the memory exceeding. It seem that the memory size of the firmware is more than 128kB.