Application board 3.0 bootloader

Hi guys,

I've made a mistake and erased the bootloader from my brand new Application Board 3.0 with J-link while I was trying to debug my firmware. Could you please help me with this? Is there a .bin or .hex file in COINES SDK? How do I flash the bootloader?

Thanks!

Hugo

Best reply by jabezwinston

As of COINES v2.6, only bootloader update package is available. Hence, no way to restore the board to original state. You can take a flash memory image of another Application Board 3.0 and apply on yours.

I have created a HEX image of my APP3.0 board memory - Bosch_Sensortec_APP3.0_board_image.hex

Install nRF-Command-Line-Tools (for nrfjprog)
Download Bosch_Sensortec_APP3.0_board_image.hex (Ctrl + S from browser)
Connect Application Board 3.0 with JLink
Run the below commands to recover the board

# Write APP3.0 board image
nrfjprog -f nrf52 --program Bosch_Sensortec_APP3.0_board_image.hex --sectorerase --verify

# Write Bootloader start address 0xF0000 to UICR.BOOTLOADERADDR(0x10001014)
nrfjprog -f nrf52 --memwr 0x10001014 --val 0x000F0000

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