2010 Jaguar XF Sat Nav Issue

[AndyGG65]

Help needed!

Owned my XF for nearly a year now and have a problem with my Sat Nav (DVD Type).

I bought an updated maps DVD 2017 for my car off the internet.

Put disc in and it carried out a software update. Took about 40 minutes did this with engine running.

Since I did the update I cannot clear the previous owners memory points.

I can clear the old stored memory points, add new memory points but as soon as I turn the ignition off and return to the car the following day the previous owners 2 stored memory points are back in there and my home address is not there along with any other memory that I have added.

I had this back at my Jaguar dealer who checked it for me. They reported an issue with the GPS Antenna pod which I replaced. They also carried out a hardware reset. 

Still the problem remains. Does anyone know how to resolve this issue? Im thinking it may need a software reset.

Id like to get this resolved as it really annoys me.