Trying to use an nRF52-DK for nRF Connect Desktop

[euggersh]

I haven't been able to find any documentation or forum posts along the lines of the problem I'm having, so...

I'm trying to use an nRF52-DK with nRF Connect Desktop to connect to BLE peripherals for testing.  The board was previously used by someone else and has some unknown firmware on it.

When I connect my Windows PC to the board's micro USB port and turn it on, LED1 pulses and the board does not appear as a USB device in any form.

I did find a post about holding down IF BOOT/RESET while powering the board up.  If I do that, LED1 pulses, LD5 blinks, and the board appears in Windows as a removable drive.  The drive goes away after about 10 seconds, and LED1 and LD5 continue to pulse and blink respectively.

Throughout all of this, at no time does the board appear in the Programmer app in nRF Connect Desktop.

I'd appreciate some direction as to where to go from here to program firmware on this thing.

Thanks.

[Menon]

Hello,

I thought your PC is detecting the Development kit, that's why I pointed to the nRF command line tool. Did you try running the command nrfjprog -i or nrfjprog --deviceversion this will list your connected devices. Could you share a screenshot of running this command?

Whether you able to see your device in the device manager? If not ,try to change the data cable or try to update your PC drivers.

Kind Regards,

Abhijith

[euggersh]

No, t he device is not visible in Device Manager except when it appears as a removeable drive.

It's not a cable problem.  If it was a cable problem, the device wouldn't appear as a removeable drive when it's in that mode.

Which drivers are you suggesting I update?