Everytime I try to connect to OTAA TTN and send a frame it comes up with Error-99 meaning it has not joined TTN properly
When I do connect via ABP and send frames every 4-10 packets comes through, I used a Arduino and Micropython setup with a basic RFM95W and it works like a charm, the RAK is problematic
With the RAK4200 I cannot do a firmware update I put it into boot mode but the firmware updater times out and doesnt connect.
The RAK811 only allows at+version all the other AT commands do not work?
I am using the RAK serial port tool so it connects and I can see the devices by AT commands.
But still no luck just wont initiate a firmware upgrade just complains it cant open port! Very frustrating since I paid a lot of money for these boards!
I know perception of value for money is relative, but they are about half the price of the Adafruit Feather M0 LoRa.
But regardless of price they should still work. And they do, for stable releases like the ones on the download site.
Youāll need to flash the boot loader from the download section. This will require a ST-Link or compatible programmer. This will overwrite everything & you can then use the v1.0 tool to download the firmware from the downloads section.
Do not use the new v1.4 tool, it is for firmware that is about to be released, which appears to be on the RAK4200 youāve got.
Is there any problem with the firmware in the board? Why did you re-burn it?
Thereās something you need to knowļ¼
V3.2.0.14. Beta4 belongs to the latest version. It is very important that previous versions of V3.2.0.14 have different burning practices and use with the latest version.
Now I tell you the solution to restore the latest firmwareļ¼
1.Connect serial port as shown in the figure below,
Yes I did connect the Boot and VCC correctly ā¦ I have been doing this for a very long time and usually dont miss those little details ā¦ its weird that TX -> TX and RX -> RX could it be a mistake?