Error md5 and reciber LORA stop

good evening, I bought 2 sparkfun lora gateway. install everything as suggested and it gives me an md5 error when uploading some sketch. On the other hand, when I manage to climb a path and receive after a while it stops receiving. One sign I see is that there is a blue led on the receiver that is on. Not on the trail. As you can see, there are two problems that I have. Of course, thank you very much to everyone. regards John

Thanks for reaching out to us on this.

MD5 issue: could be afew things, follow the troubleshooting guide #4 at https://randomnerdtutorials.com/esp32-t … ing-guide/, I also found that many users resolve that situations by disconnecting all wires connected to pins before uploading the code. Take a look at this thread: Downloading the program occurs MD5 parity error (IDFGH-4188) · Issue #50 · espressif/esp-idf · GitHub Or it can be a power issue: MD5 verify failure on ESP32 (ESPTOOL-392) · Issue #220 · espressif/esptool · GitHub

The MD5 hash error could be causing the 2nd error.

Hope this helps, and happy sparking!