nRF52840 dongle installation

This issue has resolved for itself without ANY changes from my side, which is not that good because it may stop working the same way it started...

FYI: I didn't reboot my PC. I removed this dongle and a few hours later plugged it back in. I did the same when it didn't work as well but nothing happened. 

You can see the same sn.

Which version of the dongle do you currently have? You can check this by reading the line underneath PCA10059 on the white sticker on the back of the dongle (e.g. version 0.6.0). Were you ever asked to update the connectivity FW on the dongle (like shown below)?

At this moment it has started to work by itself again. No action has been taken, the system was NOT rebooted. :(

I have mentioned this internally. Do you have any other pc you could try to get the dongle working on? If so, does everything work on that pc?

It kind of doesn't make sense trying to change anything while it is working. At least for now. During the weekend I'll most likely install my new DK and new dongle on my home PC with W8.1

Hopefully everything works fine on your home pc. There is a new update for nRF Connect for Desktop. I would recommend upgrading to version 2.5.0.

Things got much worse. I'm plugging in brand new 52840 dongle to the different W8.1 PC. The dongle indicates slowly flashing red LED. W8.1 can see it as a com port though. Installing v2.5.0. It asks to program the dongle. Agreed. Installation is over - W8.1 doesn't see the dongle at all and can't recognize the device 

Please give me detailed instruction on what to do next...

Things got much worse. I'm plugging in brand new 52840 dongle to the different W8.1 PC. The dongle indicates slowly flashing red LED. W8.1 can see it as a com port though. Installing v2.5.0. It asks to program the dongle. Agreed. Installation is over - W8.1 doesn't see the dongle at all and can't recognize the device 

Please give me detailed instruction on what to do next...

reloading did help on yet another W10 PC

Upgraded dongle painlessly started working on w8.1

Sorry for the delayed response. So everything works fine if you use a windows 10 pc to program the dongle & then use the dongle on windows 8.1? But if you only use windows 8.1, you receive the libusb error, correct? Will the dongle have to work in all types of environments (Linux, Mac & Windows 8/10)? This is a very weird issue, as the restart clearly helped resolve the issue on windows 10. Did you try restarting your pc on windows 8.1 to see if that helped before you programmed the dongle on your windows 10 machine?

Bjørn,

I was happy enough that it is finally working so I could do the job that I did not want to investigate this issue further. When it gonna hit me or anyone else again, then it will be a good time to gather some additional information. BTW, my intern has received a brand new SDK52 and nRF52840 to install on a different PC(I'm guessing W10). Pretty soon if the trouble will reoccur, I will be aware and so will you.

My best,

BR  

Great, just update this thread if you run into any more issues. Hopefully everything works like it should now.

FYI: Just now nRF Connect Desktop has lost my dongle. I pulled it of USB and then plugged it back, then I was notified that it needs to be reprogrammed yet again and so I did. It is working again... What The ...Dongle!