Hi， Nordic I checked DFU operation, found DFU work in bootload mode. I want to know below operation is OK or not. Plz help me check: download DFU bootloader download app ( This app is without softdevice, or it donot use Bluetooth, it use ESB) press button or other event, make device put into bootloader mode DFU Could you tell me it can work? I do that, but step2 it maybe erase bootloader flash, right? If when step 2, dfu app(same, without bluetooth) ? can it success? If it can success, can step 3 success?

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how to DFU if app is without softdevice

Hi， Nordic

I checked DFU operation, found DFU work in bootload mode. I want to know below operation is OK or not. Plz help me check:

download DFU bootloader
download app ( This app is without softdevice, or it donot use Bluetooth, it use ESB)
press button or other event, make device put into bootloader mode
DFU

Could you tell me it can work?

I do that, but step2 it maybe erase bootloader flash, right?

If when step 2, dfu app(same, without bluetooth) ? can it success?

If it can success, can step 3 success?