Updated Sync from 3 to 3.4 and want to know how to install updated ford nav maps?

Yes…input 3.4.22251 as your current update and 3.4.23188 as your required update and the NA 2.22 maps.
Do not remove the USB stick if advised to early in the upload in the car, as it will reboot and complete the update as maps may take an extra 30 minutes or so.

After the upload is completed ensure that you do a master reset.

Please keep us updated regarding the result. :slightly_smiling_face: