nrfjprog fail - install older nRF Connect v3.3.0

[willdeng]

Hi there, 

I recently upgraded to nRF Connect for Desktop v3.3.3 and the programmer module to v1.4.2 and I am experiencing the following issues. At first, when I would try to connect to my nRF52840 with my nRF9160 board, it would give me the following error. 

For nRF9160 DK v0.8.8 there has been discovered an error that makes communication towards nrfjprog fail. As a temporary workaround please install the older nRF Connect for Desktop v3.3.0. It is not necessary to downgrade the Programmer app. 

I then try v3.3.0 but upon selecting my device the programmer screen would turn blank. I tried it with nRF v3.2.0 which didn't work. I tried the ol' turn off and turn on for my computer but that didn't work. So I tried it on my Linux machine and at least received the same error instead of the blank screen on v3.3.3, v3.3.0, and v.3.2.0. 

The only thing I haven't done is downgrade the programmer module, which I don't know how to do and I can't seem to find instructions on how to do so. I've been using the nRF Connect and Programmer module for weeks now and I just decided to say let's finally update everything and here I am :) 

Any ideas on how to proceed?

-Will 

[Øyvind]

Hello Will,  

At first, when I would try to connect to my nRF52840 with my nRF9160 board, it would give me the following error. 

Can you please provide some screenshots of your issues? What version of nRF Command Line Tools are you running?

Kind regards,
Øyvind

[eescott]

For anyone else that come across this, I was seeing this warning message and went through the process of installing older versions but never was able to get the message to go away. Eventually I realized that the exception in the log said "LOW_VOLTAGE", I had forgotten to switch the jlink connection over to the next board I was connecting to... Seems like the warning is just shown any time there's an exception, whether or not it's related... 

[willdeng]

Update on this topic. I just ended up not using nRF Connect and used Segger J-Flash Lite to flash the boards without issue. Not really going to bother with nRF Connect anymore given how easy this free tool is to use.