Thread: help for newbie - maps not found on TT ONE V2

Okay still no joy keeps coming up with no maps found ? what am I doing wrong ??! a I say the fastativate process seems to work okay in that no errors come up but when I select the navcore option is advises me " navcore has been patched already " should this be happening ? really am stumped what to try next ??!! only removed the old tt map folder and the tt tif file should I be removing anything else from the sd card before running fastactivate /trying to install the new map again ?