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Only use Uart, can flash all(softdevice, application and bootloader) into chip nrf51822?

Hi all, I have just buy a product use nrf51822 chip, I tried to find out SWIO and CLK pin out to flash but can not. Device only has RX and TX pin for Uart function, so I wonder this nrf51822 chip allows program all( Softdevice, Application and Bootloader) via Uart? If can, How to do that? Thank you very much.

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