Sync 3.4 Load media on USB disk slow when booting up

I’ve updated to Sync 3.4, firstly 21994 in last year and now 21265 today. The updates were successful every time, I like the software and the process, no problem.
The only issue I have when updated to 3.4 is that every time I boot up the car, it takes a while to load media from USB disk, the screen will show something like trying to reconnect to USB disk, but it will time out before the USB loads up (only about several seconds later, it will show up in the notification that USB loaded.) and jumps to AM, which unfortunately does not have any signal in my parking but only noise. I have to manually switch it back to USB disk every time. When switched back, it plays perfectly.
I’ve tried several different USB disks with different brands, formats, different media in them, but it seems they all need a while to load almost right before the system would give up and switch to AM.
If I don’t turn on the engine right away when getting into the car, like wait for 5 seconds when the Ford logo shows up first then turn on the engine, it will find the USB disks “on time” and load up the media.
When in 3.2, I don’t recall having this issue.
BTW, other media, like CDs, loads up really fast. Seems like the USB disks need some time to “warm-up”
I wonder what alternative do I have if I want to make this process more smooth? I have not tried all the brands of USB disk or all the formats what so ever. I don’t mind wait those several seconds, just don’t want the car to give up and switch to AM.


SYNC Region: China

Navigation Variant: Yes

Old SYNC Version: 3.2

New SYNC Version: 3.4 21265

Do you have a error message, if so what is it?
not really

Update Method: CyanLabs Syn3 Updater

Syn3 Updater Version: 2.10.8 stable

Syn3 Updater Documentation Read: Yes

Syn3 Updater Log File

Branch: Stable
Operating System: Microsoft Windows 11 Pro (2009)

Version: 3.4.21194
Region: CN
Navigation: True
Install Mode: Auto-Detect (downgrade)
Install Mode Overridden: False
My20 Protection Enabled: 自动检测

Mode: Drive
Model: Kingston DataTraveler 3.0 USB Device
FileSystem: NTFS
Partition Type: MBR


; CyanLabs Syn3Updater Stable - downgrade  Mode - Sync 3.4.21265 CN

Item1 = TOOL - GB5T-14G386-SC_85041.tar.gz
Open1 = SyncMyRide\GB5T-14G386-SC_85041.tar.gz
Item2 = APP - 4U5T-14G381-AN_1552583626000.TAR.GZ
Open2 = SyncMyRide\4U5T-14G381-AN_1552583626000.TAR.GZ
Options = AutoInstall
Item1 = REFORMAT TOOL - 1u5t-14g386-cb.tar.gz
Open1 = SyncMyRide\1u5t-14g386-cb.tar.gz
Options = AutoInstall,Include,Transaction

4U5T-14G381-AN_1552583626000.TAR.GZ (479.7MB)
GB5T-14G386-SC_85041.tar.gz (1.8KB)
1u5t-14g386-cb.tar.gz (8.5MB)
4U5T-14G423-EC_1615430008000.TAR.GZ (381.8MB)
5U5T-14G391-EP_1626970580000.TAR.GZ (188.7MB)
5U5T-14G381-EU_1634769242000.TAR.GZ (847.2MB)
4U5T-14G421-AC_1580860292000.TAR.GZ (8.3GB)
4U5T-14G422-AE_1580861380000.TAR.GZ (1.9GB)
4U5T-14G424-AC_1582154796000.TAR.GZ (1.6KB)

[2/23/2022 7:54:49 AM] Selected Region: CN - Release: Sync 3.4.21265 - Map Version: 1.19 (2019) - CN 
[2/23/2022 7:54:49 AM] Install Mode: Auto-Detect (downgrade) Forced: False 
[2/23/2022 7:54:49 AM] MY20 Protection: 自动检测 
[2/23/2022 7:54:49 AM] Formatting USB drive
[2/23/2022 7:54:49 AM] Re-creating partition table as MBR and formatting as ExFat on selected USB drive
[2/23/2022 7:54:56 AM] Checking Existing File: 4U5T-14G381-AN_1552583626000.TAR.GZ 
[2/23/2022 7:54:56 AM] Downloading: 4U5T-14G381-AN_1552583626000.TAR.GZ
[2/23/2022 7:55:45 AM] Validating: 4U5T-14G381-AN_1552583626000.TAR.GZ 
[2/23/2022 7:55:46 AM] Downloaded: 4U5T-14G381-AN_1552583626000.TAR.GZ 
[2/23/2022 7:55:46 AM] Checking Existing File: GB5T-14G386-SC_85041.tar.gz 
[2/23/2022 7:55:46 AM] Downloading: GB5T-14G386-SC_85041.tar.gz
[2/23/2022 7:55:47 AM] Validating: GB5T-14G386-SC_85041.tar.gz 
[2/23/2022 7:55:47 AM] Downloaded: GB5T-14G386-SC_85041.tar.gz 
[2/23/2022 7:55:47 AM] Checking Existing File: 1u5t-14g386-cb.tar.gz 
[2/23/2022 7:55:47 AM] Downloading: 1u5t-14g386-cb.tar.gz
[2/23/2022 7:55:50 AM] Validating: 1u5t-14g386-cb.tar.gz 
[2/23/2022 7:55:50 AM] Downloaded: 1u5t-14g386-cb.tar.gz 
[2/23/2022 7:55:50 AM] Checking Existing File: 4U5T-14G423-EC_1615430008000.TAR.GZ 
[2/23/2022 7:55:50 AM] Downloading: 4U5T-14G423-EC_1615430008000.TAR.GZ
[2/23/2022 7:56:51 AM] Validating: 4U5T-14G423-EC_1615430008000.TAR.GZ 
[2/23/2022 7:56:52 AM] Downloaded: 4U5T-14G423-EC_1615430008000.TAR.GZ 
[2/23/2022 7:56:52 AM] Checking Existing File: 5U5T-14G391-EP_1626970580000.TAR.GZ 
[2/23/2022 7:56:52 AM] Downloading: 5U5T-14G391-EP_1626970580000.TAR.GZ
[2/23/2022 7:57:17 AM] Validating: 5U5T-14G391-EP_1626970580000.TAR.GZ 
[2/23/2022 7:57:17 AM] Downloaded: 5U5T-14G391-EP_1626970580000.TAR.GZ 
[2/23/2022 7:57:17 AM] Checking Existing File: 5U5T-14G381-EU_1634769242000.TAR.GZ 
[2/23/2022 7:57:17 AM] Downloading: 5U5T-14G381-EU_1634769242000.TAR.GZ
[2/23/2022 7:58:37 AM] Validating: 5U5T-14G381-EU_1634769242000.TAR.GZ 
[2/23/2022 7:58:39 AM] Downloaded: 5U5T-14G381-EU_1634769242000.TAR.GZ 
[2/23/2022 7:58:39 AM] Checking Existing File: 4U5T-14G421-AC_1580860292000.TAR.GZ 
[2/23/2022 7:58:39 AM] Downloading: 4U5T-14G421-AC_1580860292000.TAR.GZ
[2/23/2022 8:15:53 AM] Validating: 4U5T-14G421-AC_1580860292000.TAR.GZ 
[2/23/2022 8:16:10 AM] Downloaded: 4U5T-14G421-AC_1580860292000.TAR.GZ 
[2/23/2022 8:16:10 AM] Checking Existing File: 4U5T-14G422-AE_1580861380000.TAR.GZ 
[2/23/2022 8:16:10 AM] Downloading: 4U5T-14G422-AE_1580861380000.TAR.GZ
[2/23/2022 8:20:14 AM] Validating: 4U5T-14G422-AE_1580861380000.TAR.GZ 
[2/23/2022 8:20:18 AM] Downloaded: 4U5T-14G422-AE_1580861380000.TAR.GZ 
[2/23/2022 8:20:18 AM] Checking Existing File: 4U5T-14G424-AC_1582154796000.TAR.GZ 
[2/23/2022 8:20:18 AM] Downloading: 4U5T-14G424-AC_1582154796000.TAR.GZ
[2/23/2022 8:20:20 AM] Validating: 4U5T-14G424-AC_1582154796000.TAR.GZ 
[2/23/2022 8:20:20 AM] Downloaded: 4U5T-14G424-AC_1582154796000.TAR.GZ 
[2/23/2022 8:20:20 AM] Preparing USB drive
[2/23/2022 8:20:20 AM] Checking Existing File: 4U5T-14G381-AN_1552583626000.TAR.GZ 
[2/23/2022 8:20:20 AM] Copying: 4U5T-14G381-AN_1552583626000.TAR.GZ 
[2/23/2022 8:21:30 AM] Validating: 4U5T-14G381-AN_1552583626000.TAR.GZ 
[2/23/2022 8:21:31 AM] Copied: 4U5T-14G381-AN_1552583626000.TAR.GZ 
[2/23/2022 8:21:31 AM] Checking Existing File: GB5T-14G386-SC_85041.tar.gz 
[2/23/2022 8:21:31 AM] Copying: GB5T-14G386-SC_85041.tar.gz 
[2/23/2022 8:21:31 AM] Validating: GB5T-14G386-SC_85041.tar.gz 
[2/23/2022 8:21:31 AM] Copied: GB5T-14G386-SC_85041.tar.gz 
[2/23/2022 8:21:31 AM] Checking Existing File: 1u5t-14g386-cb.tar.gz 
[2/23/2022 8:21:31 AM] Copying: 1u5t-14g386-cb.tar.gz 
[2/23/2022 8:21:33 AM] Validating: 1u5t-14g386-cb.tar.gz 
[2/23/2022 8:21:33 AM] Copied: 1u5t-14g386-cb.tar.gz 
[2/23/2022 8:21:33 AM] Checking Existing File: 4U5T-14G423-EC_1615430008000.TAR.GZ 
[2/23/2022 8:21:33 AM] Copying: 4U5T-14G423-EC_1615430008000.TAR.GZ 
[2/23/2022 8:22:29 AM] Validating: 4U5T-14G423-EC_1615430008000.TAR.GZ 
[2/23/2022 8:22:30 AM] Copied: 4U5T-14G423-EC_1615430008000.TAR.GZ 
[2/23/2022 8:22:30 AM] Checking Existing File: 5U5T-14G391-EP_1626970580000.TAR.GZ 
[2/23/2022 8:22:30 AM] Copying: 5U5T-14G391-EP_1626970580000.TAR.GZ 
[2/23/2022 8:22:57 AM] Validating: 5U5T-14G391-EP_1626970580000.TAR.GZ 
[2/23/2022 8:22:57 AM] Copied: 5U5T-14G391-EP_1626970580000.TAR.GZ 
[2/23/2022 8:22:57 AM] Checking Existing File: 5U5T-14G381-EU_1634769242000.TAR.GZ 
[2/23/2022 8:22:57 AM] Copying: 5U5T-14G381-EU_1634769242000.TAR.GZ 
[2/23/2022 8:25:02 AM] Validating: 5U5T-14G381-EU_1634769242000.TAR.GZ 
[2/23/2022 8:25:04 AM] Copied: 5U5T-14G381-EU_1634769242000.TAR.GZ 
[2/23/2022 8:25:04 AM] Checking Existing File: 4U5T-14G421-AC_1580860292000.TAR.GZ 
[2/23/2022 8:25:04 AM] Copying: 4U5T-14G421-AC_1580860292000.TAR.GZ 
[2/23/2022 8:45:50 AM] Validating: 4U5T-14G421-AC_1580860292000.TAR.GZ 
[2/23/2022 8:46:06 AM] Copied: 4U5T-14G421-AC_1580860292000.TAR.GZ 
[2/23/2022 8:46:06 AM] Checking Existing File: 4U5T-14G422-AE_1580861380000.TAR.GZ 
[2/23/2022 8:46:06 AM] Copying: 4U5T-14G422-AE_1580861380000.TAR.GZ 
[2/23/2022 8:50:52 AM] Validating: 4U5T-14G422-AE_1580861380000.TAR.GZ 
[2/23/2022 8:50:56 AM] Copied: 4U5T-14G422-AE_1580861380000.TAR.GZ 
[2/23/2022 8:50:56 AM] Checking Existing File: 4U5T-14G424-AC_1582154796000.TAR.GZ 
[2/23/2022 8:50:56 AM] Copying: 4U5T-14G424-AC_1582154796000.TAR.GZ 
[2/23/2022 8:50:56 AM] Validating: 4U5T-14G424-AC_1582154796000.TAR.GZ 
[2/23/2022 8:50:56 AM] Copied: 4U5T-14G424-AC_1582154796000.TAR.GZ 
[2/23/2022 8:50:56 AM] Generating reformat.lst
[2/23/2022 8:50:56 AM] Generating autoinstall.lst

almost right “after” the system would give up and switch to AM.

What you describe is a bug in Sync in one of the previous versions. This was fixed a while ago. Since this is a 2017 vehicle, it most likely has the updated USB hub for CarPlay. This might be a case of data corruption in the installation which was the cause of the previous issue.

I would suggest downgrading the unit to 3.3.19052 and see if the problem persists. If the issue is still there, use the Syn3 Updater to reformat the unit to the latest version.

thanks for the reply, when I update from 21194 to 21265 today, it uses downgrade mode first, the system went into 3.3, then was flashed to 21265. But that did not solve the problem.

I’ll try to see if downgrading to 3.3.19052 solves the problem

@acios how did it go?

I’m setting a 2 days of inactivity auto-closure since we didn’t hear back from you for almost a week.

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