Error when launching nrf connect v3.3.0 with nrf52 DK

[Ivan ooi]

Error while probing devices: Error occured when get serial numbers. Errorcode: CouldNotCallFunction (0x9) Lowlevel error: INVALID_OPERATION (fffffffe)

Hi all , I am encountering this issue when I am launching the software of nRF connect v3.3.0 and calling the Bluetooth Low Energy app . 

Help much appreciated. Now with my NRF52 DK , It cannot communicate. 

Thanks 

[billtsai]

Hi,

you can check your JLinkARM.dll version in window command line by typing nrfjprog -v

nRFconnect works fine with version 6.54c.

Installing new nRF command line tool helps you upgrade the version.