I'm trying the first steps of the initial tutorial with the nRF5340 kit, from here:
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_gsg_ncs%2FUG%2Fgsg%2Ffirst_test.html
The nRF connect app does not allow me to erase & write the example app from the hex files.
I see this error in the log:
ERROR Could not fetch memory size of target devkit: Error: Error occured when get library info. Errorcode: CouldNotOpenDevice (0x4)
Lowlevel error: Unknown value (ffffff5e)
I am using the latest nRF connect application - I just downloaded it.
INFO Using nrfjprog library 10.12.1, pc-nrfjprog-js 1.7.6
I am using OSX 10.15.7