I desperately want to use this on my Nexus 4 non-rooted using stock 4.4.4. I have copied all the files to Android/Data as per instructions and installed the apk for emulated/0 on my phone. I've also copied gmapprom.img to the .system folder.
The app starts fine but I don't have any maps. Not even the base map shows up. In the settings under "My Maps" there are no maps.
Also how do I change the language to german. Only US English is available.
Works fine now. It seems that you must copyy everything to the right folder on your PC before moving it to your phone.