2018 ford f-150 after update to 3.4 21194 no navigation function

Read this:
Tutorial: Installation of ROW (NNG) Maps on NA 32GB Sync 3 APIM - Ford / Guides & Info - CyanLabs Official Community

You need to make the asbuilt changes…You need to change the country code in the APIM to the country you are presently in and change the map type to NNG.

APIM Asbuilt Settings:

The country information in the APIM As Built needs to be changed:
from 7D0-02-01 5553 xxxx xxxx
to 7D0-02-01 XXXX xxxx xxxx
This setting changes the country from US to your country code.

When changing from NA to ROW (NNG) maps, the Navigation Map Type will need to be changed from Telenav to NNG. (Central America, Caribbean, India and Sri Lanka, Israel, Middle East, North Africa, South Africa, South East Asia)

7D0-01-02 x*xx xxxx xxxx
USB2, Navigation Map Type (Telenav/NNG), Rear Electronic Feature Panel (REFP) (Rear EFP with Rotary Volume Knob)
0=USB2 Disabled, Navigation Disabled, Rear EFP Disabled
1=USB2 Disabled, Navigation Disabled, Rear EFP Enabled
2=USB2 Disabled, Navigation Enabled (Telenav Common HMI), Rear EFP Disabled
3=USB2 Disabled, Navigation Enabled (Telenav Common HMI), Rear EFP Enabled
4=USB2 Disabled, Navigation Enabled (NNG External HMI), Rear EFP Disabled
5=USB2 Disabled, Navigation Enabled (NNG External HMI), Rear EFP Enabled

If you have a setting of ‘2’, use a setting of ‘4’.
If you have a setting of ‘3’, use a setting of ‘5’.