MCU1 with AP2 on 90D late 2016. Arrived OTA using WiFi and clocked in at almost 9GB over 2-3 days at roughly 300MB per hour after receiving 2018.14.2. Didn't actually receive a notification about new maps on phone or in car. However after I noticed data stopped I got in car. Both screens had rebooted on entry and it showed the same release notes as for the main update.
Let me know if you want to know anything else and I'll try to help.
Looks like you are the first reported new Nav in the UK .