Hi mate,
I tried updating my 700 to navcore_SE_8.002.9117 and the latest tt v8.05 map.
It kept crashing, even with the fixes suggested, so i've gone back to navcore 7.162, and loaded on TomTomGO Map Western and Central Europe v720.1803
Worth noting if you drive in Europe, the V8.05 maps don't cover central europe, but v7.2 does comprehensively.
If you google the map name, you'll find it.