I'm using a Garmin Edge 820 for biking. I Always patched my firmare with IMGPatcher v. 1.30 for using my Garmin Topo_DE V8 map.
This still works fine.
But, now I bought a Garmin Edge Explore for my wife and I also wanted to use the topo map on that device.
So I tried the same on the Edge Explore I did on the Edge 820. IMGPatcher is not working with the Edge explore Firmware, so I took the JNX Loader Patcher 3.80 and used the 4.10 Firmware from Garmin with the patcher. Renamed it to GUPDATE.GCD and put it on the device.
System was updated fine but I still can't use the Garmin topo map. It is not shown in the Maps list.
What am I doing wrong? Or what do I have to do different on the Edge explore, to get that map working?

Thanks for help!