Official ford website showed that i needed to update my Sync and maps, so I did. And after the update it started extremely lagging and it takes like 5+ seconds to register touch. I updated the maps to F6.1 but it didn’t even reboot itself, as the instructions on the website said it would. The sync is still extremely laggy, but it is fine when i leave the instalation usb stick inserted.
Install the latest maps available as per that guide, you can stay at the latest 3.0 build you already have. Once the maps are updated, it should be fine.
I have already tried master reset, but it didn’t work. I’m not really sure which maps should, and which maps I can install, also the links to the f14 maps in the don’t work.
Thanks for the reports for the broken links, I’ll look into that. (see edit below)
For the time being, considering your unit is not working as it should, you can install the F11 maps that are described there in the guide, those links work.
You only need to install the NAV related stuff, since your Sync3 version is up to date.
Once you upgrade to F11, even though those are not the latest maps, your Sync3 unit should not lag anymore.
EDIT: Links for the F14 maps have been fixed, you can download them now.