Thingy52 MESH demo

[ToasTer86]

Hey Nordic and co-nordic developpers,

Just to show some capabilities here at work I want to compile and run the mesh demo on the 10 Thingy52's we have here.

I am currently at step 5 & 6 from the Github Nordic playground project ( https://github.com/NordicPlayground/Nordic-Thingy52-mesh-demo) 
But a bit confused how I should be just simply downloading the firmware to Thingy52.

There are like I think 4 different ways of doing this:

• NRFutil, with a own premade key and packaged zip
• NRFconnect with a nRF52-DK board
• Using your phone as DFU uploader (still need to generate a package ?)
• Using segger and just downloading it ??
  
  Can I get some pointers how to do this ?
  
  

Thanks in advance,

ToasTer

[ToasTer86]

I have connected the Thingy52 like this to the nRF52840-PDK as can be seen in the picture. No I can download the new firmware (demo software from github) with SEGGER embedded studio to the Thingy52.
But after flashing the software the Thingy52's just go into DFU mode, the bridge & node software.

The reason I can see they are going into DFU mode is that when I grab my phone with NRFconnect I can see the Thingy's coming up as DFU.

What am I missing ? 

Thanks in advance.