Ok,
The current navcore is 8410.1218 and boot 5.5106, both are copied from my last map update in 2008. But when patching the new map its says that the Navcore is already patched, which would have been from the 2008 where the Bluetooth worked ok with the same mobile as today.
I checked both folders of 2008 with map 825-2157 and of todays folder with map 850-2782, both bin folders in the navcore is the same in size and dates etc.
Checked with TT to check for my phone which is not listed, yet it did link via Bluetooth prior to the map update.
When I say the bluetooth don't work, meaning TT will search and find my phone but will not connect although asked to do so.
Is it worth using a later Navcore for use with the current map, boot and TT One V3.
thanks