When I try to update the firmware that downloaded from Rakwireless website(RAK3172-E_latest.bin) with STM32CubeProgrammer and RAK DFU Tool, firmware was updated without issues.
After that by the guidelines given in LowLevelDevelopment, I build pingpong project with STM32CubeIDE and updated firmware through RAK DFU Tool. Pingpong firmware got updated.
When again I am trying for firmware updation((RAK3172-E_latest.bin), by both tools I can’t able to update the firmware.
When I try with ArduinoIDE, it is telling “Device not in boot mode”.
We are not using STM32CubeIDE, so just guessing here:
When uploading a firmware that is created by STM32CubeIDE, you destroy "our" bootloader. Without "our" bootloader "our" tools and "our" Arduino BSP are not working any more.
If you want to create your app with STM32CubeIDE you need to use STM32CubeProgrammer application to flash the code that was created with STM32CubeIDE.
If you want to go back to use RUI3, you have to use STM32CubeProgrammer and flash our standard AT command firmware first.
It is the same for WisBlock Core modules. Boot0 pin is on the pin headers of the BaseBoard. You need to connect it to VDD during reset or power up to force the STM32 into the STM32 boot mode.
