1. Backup your device.
2. Copy the new NavCore to the blank SD. I suggest you use this:
3. Start your TT to generate a ttgo.bif file.
4. Copy your map folder to the SD. Make sure there is enough space for it. I think (I'm not sure) that the 845.2645 map is to big for 2GB).For maps Vs NavCore please see this:
5. Use EasyActivator5_v0.57.21 to generate a .dct file for your map. You will need a meta.txt file for your map to do it.See this for download:
6.Patch your ttsystem with EasyActivator and if you want to connect to TT Home patch the TT Home .dll.
7. Copy your voices to the voices folder and your Poi's to the map folder.
8.You are done.!!