52840DK FW size confusing

Dear all:

        I found that the nrf52840 flash size is only 1MB, but the size of light bulb load is about 850KB, I have some questions:

        1. Does it contains the FOTA region? If yes, what is the size of the FOTA region?

        2. If binary doesn't include FOTA region, 1MB flash in nrf52840 seems not enough to do FOTA, how to implement FOTA?

BR

Chuan

        

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