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Flashing bootloader and application via J-Link

Nikita

Hello. I want to make flashing of devices for production faster. So I want to write application together with bootloader via J-Link simultaneously and not via OTA DFU. I'm using S110 v6 and dual bank BLE DFU from SDK 5.1 example. I know that after flashing bootloader and application I just need to compute CRC16 of the DFU bank 0 and write this value to the bootloader settings in the flash, but maybe someone already has a solution to this problem?

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    We don't have to write the CRC because bootloader_app_is_valid function first checks if the application in CODE region 1 is flagged as valid during update and if it's flagged as valid it then checks whether CRC matches but if CRC = 0 it skips this check and assume that the application is valid. And just flash it all like this: nrfjprog.exe --eraseall --programs s110_nrf51822_6.0.0_softdevice.hex --program application.hex nRF51822_BLE_DFU.hex --verify --reset

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    We don't have to write the CRC because bootloader_app_is_valid function first checks if the application in CODE region 1 is flagged as valid during update and if it's flagged as valid it then checks whether CRC matches but if CRC = 0 it skips this check and assume that the application is valid. And just flash it all like this: nrfjprog.exe --eraseall --programs s110_nrf51822_6.0.0_softdevice.hex --program application.hex nRF51822_BLE_DFU.hex --verify --reset

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