flashing dfu bootloader and an application

[Shay Ohayon]

How can I flash both the dfu bootloader and an application, and have the application run after the flash? As soon as I flash the bootloader, it kicks in doesn't fire the flashed application because bootloader_app_is_valid(DFU_BANK_0_REGION_START) is false. It only fires up the application after I upload it using the DFU mechanism.

[sidekick]

To make the bootloader aware of the usual method of firmware flashing (Jlink), we need to manually write “0x1” at the address (0x03fc00), disable CRC checking of the image and do a system reset.

$ nrfjprog.exe --memwr 0x03fc00 --val 0x1
$ nrfjprog.exe --memwr 0x03fc04 --val 0x0
$ nrfjprog.exe --reset

nrfjprog.exe is distributed with the nRFGo Studio and in my system it is located in the following directory.

$ which nrfjprog.exe
/c/Program Files (x86)/Nordic Semiconductor/nrf5x/bin/nrfjprog.exe

[Hung Bui]

@Shay Ohayon: You can have a look here. Note that this is not applied for secure bootloader from SDK v11.