Remember, if you change the navcore or update it through TTHome then you will need to patch that new navcore as above. Navcore v7/v8/v9 only (NOT v10/11/12) (application/software) Each navcore will need to be patched ONCE to recognise your new map(s)/premium speedcams/premium celebrity voices 2a) If you use a map which is compatible with the correct & current navcore then you can use one of the cracking/patching tools to create/overwrite the ttsystem file in the root of your SD card or internal memory.
