Strange error. Update/Downgrade not working

Ford SYNC 3 Support
,
17

What version of Sync are you currently on? 3.4.xxx?

If you are on 3.4, do this…

Download 4U5T-14G381-AN_1552583626000.TAR.GZ.
The file can be found in the APIM IVSU Database.

Follow the instructions below:

  1. Create a USB drive (format as EXFAT) with a SyncMyRide folder.
  2. Copy the file downloaded above into the SyncMyRide folder.
  3. In the root of the USB is the autoinstall.lst and DONTINDX.MSA files which you can obtain from any upgrade you previously performed.
  4. You will need to edit the autoinstall.lst file so it looks like the example below:Autoinstall.lst contents:

[SYNCGen3.0_ALL]
Item1 = 4U5T-14G381-AN_1552583626000.TAR.GZ
Open1 = SyncMyRide\4U5T-14G381-AN_1552583626000.TAR.GZ
Options = Delay,AutoInstall

  1. Insert USB in vehicle and wait for the installation to complete. You should see a message indicating completion.

This should force a downgrade to 3.3.19052 and then you will be able to upgrade using the Syn3 Updater app from 3.3.19052 to 3.4.20196.