This not a question. It is for your information (FYI). I've seen many questions about flashing the nRF53 using CMSIS-DAP. Anyone interested see attached instructions.
The instructions uses the IDAP-Link, a CMSIS-DAP probe available at mouser. https://www.mouser.ca/ProductDetail/I-SYST/CS-BLYST-08?qs=T3oQrply3y%252BhSfpc3hK%2FLg%3D%3D
It is also available here : https://www.tindie.com/products/hnhoan/cmsis-dap-arm-debug-jtagswd-microsd-drag-drop/
It should work with other CMSIS-DAP probe but have not tested.