Problem with Programmer update

[JuanRondon]

I was work with NRF Connect for Desktop v3.12.0 and Programmer V3.0.4 and I did not have any problem programming my NRF52833 and my NRF52840 modules.

Today I update NRF Connect for Desktop to v4.0.0 and Programmer to v3.0.7 and the Programmer recognize the module and apparently program it. But when I test the module (with the same HEX file) the module not run. In terminal show these messages:

*** Booting Zephyr OS build v3.0.99-ncs1-1 ***
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Swap type: none
I: Bootloader chainload address offset: 0xc000
I: Jumping to the first image slot 

How I can downgrade Programmer to v3.0.4?

[Hung Bui]

Hi Juan, 

Could you please let me know which firmware did you test with ? 
Have you tried with very simple sample for example such as blinky ? 

What I can see from the log is that it has MCUBoot, and seems like there is an issue with it. Please try also to test with simple application that use Mcuboot, for example the SMP_SVR sample. 

[JuanRondon]

Thanks for your help, I will test with the SMP_SVR sample, meanwhile can you explainme how to downgrade Programmer software? I need program several devices urgently!!!

[Hung Bui]

Hi Juan, 
There is not a straight forward way of downgrading unfortunately. 

You can have a look here:  How to downgrade nRF Connect plugins? 

And here:  How to downgrade nRF Connect? 

There are possibilities to downgrade but we will have to request that with R&D and they will need to create a package for us. 

But I would say that the programmer should work exactly the same when you flash a hex file. I would suggest to use the command line nrfjprog.exe to program.

It's the command line backend tool that nRF Connect Programmer uses to do programming.