''Invalid or Unsigned File'' message when trying to update

[CyanLabs (Scott)]

@LePtiQC413

Invalid or Unsigned File

Are you trying to go directly to 3.x from 1.x?

This won’t work, you may need to go to 2.2 first

2016 Ford Flex - Update Message with No USB

Following up in case anyone else has a related issue with a 2016 Ford Flex. It is said in other posts but I will confirm. If you are on Sync 3 v1.0, installing 2.2 first seems to be the solution if you are hitting snags. I was using a 3.0 USB and Ford method. Then a new USB hub fixes CarPlay. I will probably upgrade to 3.0.20204 ( JR3T-14G381-AX - SYNC 3 APIM Software (IVSU) Database - CyanLabs ) but haven’t yet. Then maybe 3.4 with Syn3. As of now everything functions properly so might just l…