Over the air firmware updates + testing

Hello,

My name is Calvin and I am tasked with testing the NRF52840. I want to create my own development board for prototyping a project, but I do not want to keep plugging in to program. 

1. What components do I need to keep to do bluetooth FOTA? Are there simpler options to FOTA?

2. What development tools do I need to begin programming the NRF52840? Please link. 

3. Is there a good development board option with this chip allowing me to practice FOTA before I do my PCB design?

Thanks,

Calvin

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