Flash wrong hex to nrf52840dk, then jlink not found

[无效]

Hi, I flash the nrf52840 dongle hex to the nrf52840dk by mistake, then no device can be found on nrfconnect.

I used nrfconnect for vscode to flash the hex, it was work, uintill my mistake.

Can you tell me how to get the device back？

Thank you

OS: windows

[无效]

oh, I found a solution here and it works. 

sorry to bother