How to update the software over the air (SUOTA) with the SmartSnippets ?

Hi,Dialog!

I recently doing SUOTA, use a DA14580 device that external SPI FLASH as SUOTA Initiato, and the SmartSnippets v3.6. I have the following problems:

1.How to open the SmartSnippets with UART/SPI mode?Is the use of DA14580 Dongle?

2.Now I open the SmartSnippets with UART mode,but in "Establish Connection using DA14580-01/DA14581", there are two tips:

A. SEGGER J-Link V4.72-Emulator selection: no emulators connected via USB. Do you want to connect a J-Link via TCP/IP instead?

B. Uart Port is in use: COM1 port is externally used.

Can you help me to provide the details of the process. Looking forward to your reply,thank you!