Always SIGN_ERR01 on USB insert on Sync 3.2

What is your SYNC Region? NA

Do you have Navigation? Yes

What region is your SYNC APIM? NA

What was your old SYNC Version? 3.2 b.18004

What is your new SYNC Version? -

Do you have a error message, if so what is it? SIGN_ERR01

How did you update, Ford Website / CyanLabs Website / Syn3 Updater?
I have tried Ford Website and the Syn3 Updater. Always with the same result.

If you answered Syn3 Updater above;

  • What version of Syn3 Updater did you use?

  • Have you read the documentation at Syn3 Updater | Cyanlabs Docs ? Yes

  • Please paste your log output or provide the URL to your log file below
    (Log files can be found on the root of your USB drive or in %localappdata%\CyanLabs\Syn3Updater\Logs)

Branch: Stable
Operating System: Microsoft Windows 10 Pro (2004)

Version: 3.2.18004
Region: NA
Navigation: True
Install Mode: Auto-Detect (autoinstall)
Install Mode Overridden: False
My20 Protection Enabled: Auto-Detect

Mode: Drive
Model: Generic USB Flash Disk USB Device
FileSystem: FAT32
Partition Type: MBR

; CyanLabs Syn3Updater Stable - Autoinstall Mode - Sync 3.4.19101 NA

Item1 = GRACENOTES - 4U5T-14G423-CA_123766.tar.gz
Open1 = SyncMyRide\4U5T-14G423-CA_123766.tar.gz
Item2 = APPS - 5U5T-14G381-AP_1555085337000.TAR.GZ
Open2 = SyncMyRide\5U5T-14G381-AP_1555085337000.TAR.GZ
Item3 = VOICE - 5U5T-14G391-CL_1580862907000.TAR.GZ
Open3 = SyncMyRide\5U5T-14G391-CL_1580862907000.TAR.GZ
Options = AutoInstall

4U5T-14G423-CA_123766.tar.gz (724.2MB)
5U5T-14G381-AP_1555085337000.TAR.GZ (891.2MB)
5U5T-14G391-CL_1580862907000.TAR.GZ (385.4MB)

[12/09/2021 14:03:35] Selected Region: NA - Release: Sync 3.4.19101 - Map Version: Keep Existing Maps 
[12/09/2021 14:03:35] Install Mode: Auto-Detect (autoinstall) Forced: False 
[12/09/2021 14:03:35] MY20 Protection: Auto-Detect 
[12/09/2021 14:03:35] Formatting USB drive
[12/09/2021 14:03:35] Re-creating partition table as MBR and formatting as ExFat on selected USB drive
[12/09/2021 14:03:43] Checking Existing File: 4U5T-14G423-CA_123766.tar.gz 
[12/09/2021 14:03:45] Validated: 4U5T-14G423-CA_123766.tar.gz (Skipping Download) 
[12/09/2021 14:03:45] Checking Existing File: 5U5T-14G381-AP_1555085337000.TAR.GZ 
[12/09/2021 14:03:54] Validated: 5U5T-14G381-AP_1555085337000.TAR.GZ (Skipping Download) 
[12/09/2021 14:03:54] Checking Existing File: 5U5T-14G391-CL_1580862907000.TAR.GZ 
[12/09/2021 14:03:58] Validated: 5U5T-14G391-CL_1580862907000.TAR.GZ (Skipping Download) 
[12/09/2021 14:03:58] Preparing USB drive
[12/09/2021 14:03:58] Checking Existing File: 4U5T-14G423-CA_123766.tar.gz 
[12/09/2021 14:03:58] Copying: 4U5T-14G423-CA_123766.tar.gz 
[12/09/2021 14:06:44] Validating: 4U5T-14G423-CA_123766.tar.gz 
[12/09/2021 14:06:46] Copied: 4U5T-14G423-CA_123766.tar.gz 
[12/09/2021 14:06:46] Checking Existing File: 5U5T-14G381-AP_1555085337000.TAR.GZ 
[12/09/2021 14:06:46] Copying: 5U5T-14G381-AP_1555085337000.TAR.GZ 
[12/09/2021 14:10:10] Validating: 5U5T-14G381-AP_1555085337000.TAR.GZ 
[12/09/2021 14:10:12] Copied: 5U5T-14G381-AP_1555085337000.TAR.GZ 
[12/09/2021 14:10:12] Checking Existing File: 5U5T-14G391-CL_1580862907000.TAR.GZ 
[12/09/2021 14:10:12] Copying: 5U5T-14G391-CL_1580862907000.TAR.GZ 
[12/09/2021 14:11:43] Validating: 5U5T-14G391-CL_1580862907000.TAR.GZ 
[12/09/2021 14:11:44] Copied: 5U5T-14G391-CL_1580862907000.TAR.GZ 
[12/09/2021 14:11:44] Generating Autoinstall.lst

Please provide any further details below

I think that the certificate check could fail due to a wrong date on the Sync 3. When I tried updating it with the WiFi updater in the car, the date it was giving me was: “Last Checked for Updated 01-01-2000 12:10:29”. I seem not to be able to find how to set it to 2021.
I have tried all the versions available on the Syn3 Updater, all gave me the same error. I also tried formatting the USB stick on a different Windows 10 and 7 machines, with no success. 5 different USB sticks (USB2 and USB3) were also tested… Nothing seems to fix my problem.
Maybe previous owner changed something with Forscan (I have one too if needed), or maybe he flashed it in a bad way before?

Can you please help me out? :slight_smile: Maybe there is a simple fix that do not know about yet.

Sounds like you don’t have sync 3 post a photo of your “about” page

Here it is :slight_smile:

Ok that’s sync 3 not sure then tbh

I know that someone was changing it to support EU frequencies - its imported from the US originally. I swapped back the ACM 727-04-01 to North America (0) and the Country Code to 5553 (US) when it didn’t want to update, but I had no luck. Is it possible that some other options are forbidding me from updating?

Run the APIM Interrogator Tool in the troubleshooting page of Syn3 Updater and post the results. You are missing the MAC addresses for wifi and hotspot, and I suspect other things.

Go to Index - FordServiceInfo.Com ( and enter your VIN to get the OEM asbuilt for your vehicle. Download the .ab file. Put that in the AsBuilt folder in FORScan. You can restore the APIM with that info to factory specs.