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Sync 3.4.23188 - Feedback & Issues
Introduction
Sync 3.4.23188 has been found online and added to Syn3 Updater! thanks once again to @AuRoN
For each new release a specific thread will be created, please use this thread to post any feedback or issues …
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179
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103303
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March 1, 2025
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USB stopped working after updating to 3.0.23219
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6
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65
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January 14, 2026
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A few issues after upgrade.
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7
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42
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January 14, 2026
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Sync 3 possibly bricked after update
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6
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39
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January 14, 2026
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On screen Climate Control buttons not working Sync 1 -> Sync 2 Upgrade 2015 Ford Fusion SE
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7
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44
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January 13, 2026
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Update sync 3 Error Code PKG_ERR04 Ford Flex 2017
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5
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67
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January 13, 2026
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Cannot update sync 3
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9
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62
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January 12, 2026
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Sync 3 and 4 Bench Harness Project
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17
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766
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January 12, 2026
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Ayuda con sync 3
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3
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32
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January 11, 2026
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Help 2020 f250 black screen
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37
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105
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January 13, 2026
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Sync 3 Update Failed Leading To Issues
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13
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36
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January 10, 2026
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reading the interregator - do i have my20?
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29
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85
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January 11, 2026
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Sync 4 edge 2020 retrofit
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3
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42
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January 8, 2026
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APIM DTC ERRORS
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10
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53
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January 7, 2026
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Not a right version after updating to v3.4.23188
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4
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56
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January 6, 2026
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Iphone 17 crashing car play
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15
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83
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January 6, 2026
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Sync 4 GPS issue
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3
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25
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January 6, 2026
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18' F150 - SYNC3 to SYNC4 retrofit, lost Active Park Assist. Can I get it back?
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13
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78
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January 6, 2026
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Installation Failed Error Code:SIGN_ERR01
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10
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76
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January 6, 2026
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Unable to load 3.4 version
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11
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76
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January 6, 2026
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the radio keeps turning on and off
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1
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20
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January 5, 2026
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Sound Setting or Fade/Balance Not saving. 2018 F150
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1
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29
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January 3, 2026
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Updated to SYNC 3.4 from SYNC 3, SYNC 3 had updated Maps 2024, from ESN Flashdrive
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5
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94
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January 2, 2026
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Rwdata full even numerous soft resets done and the rw data cleaner tool used
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11
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83
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January 2, 2026
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callibration files needed for failed update
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5
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67
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January 1, 2026
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17 f350 acm upgrade with sync 3-4 upgrade
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9
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72
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December 30, 2025
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Black screen: is it the fault of the APIM or the battery?
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22
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203
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December 30, 2025
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Chimes from ipc instead speakers
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38
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250
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December 30, 2025
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Radio Presets Not Lining Up
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4
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68
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December 28, 2025
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Download Problems, trying 4 days
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24
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144
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December 28, 2025
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