# callibration files needed for failed update **URL:** \ **Category:** Ford Update Support\ **Tags:** nav, na, oem, pre-my20, SYNC3, APIM\ **Created:** [27 December 2025 19:30 UTC](https://community.cyanlabs.net/t/callibration-files-needed-for-failed-update/24543 "2025-12-27T19:30:40Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![cvasquez636](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/c/ecd19e/32.png) [@cvasquez636](https://community.cyanlabs.net/u/cvasquez636)\ **Post date:** [27 December 2025 19:30 UTC](https://community.cyanlabs.net/t/callibration-files-needed-for-failed-update/24543/1 "2025-12-27T19:30:40Z")
looking for files to try and unbrick a apim after a failed update attempt. strat: GB5T-14G374-CA.VBF cal: GB5T-14G375-DA.VBF ANY HELP WOULD BE APPRECIATED * * * **SYNC Region:** NA **Navigation Variant:** Nav **Manufacturer Year:** Pre MY20 **Install Type:** OEM **Old SYNC Version:** 1.0 **New SYNC Version:** 1.0 **Do you have a error message, if so what is it?** black screen **Update Method:** Official Ford ---
**Author:** ![F150Chief](https://community.cyanlabs.net/user_avatar/community.cyanlabs.net/f150chief/32/14712_2.png) [@F150Chief](https://community.cyanlabs.net/u/F150Chief)\ **Post date:** [28 December 2025 21:20 UTC](https://community.cyanlabs.net/t/callibration-files-needed-for-failed-update/24543/2 "2025-12-28T21:20:56Z")
What is the model of you Sync APIM? With Sync 1 it would be… > 3.0 APIM NAV Unit Firmware (Production Release, 2016-Early 2017, G thru Early H Series) > Secondary Boot Loader: GB5T-14G376-AA > Strategy (F188): GB5T-14G374-CA or GB5T-14G374-CB > Calibration (F124): GB5T-14G375-DA or GB5T-14G375-FA > ECU Configuration/Sound Profiles (F10A): GB5T-14G379-AA > ECU Configuration/Illumination Strategy (F16B): GB5T-14G379-BA First thing, restore the APIM to the original firmware. DO NOT upgrade the firmware again until you update the Sync app to version 2.2.17101 or after. This is not mandatory, but you will have better success with the firmware updates. Once that is done you can update the firmware to: > 3.0 APIM NAV & NON-NAV Unit Firmware (Production Release, 2017-Pre-2018.5, H thru Early J Series) > (Originally Found On 2017/Early 2018 Units That Ship with 2 USB Ports on Back) > Secondary Boot Loader: GB5T-14G376-AA > Strategy (F188): HB5T-14G374-CA > Calibration (F124): HB5T-14G375-DA or HB5T-14G375-FA (NAV) / HB5T-14G375-CA (NON-NAV) > ECU Configuration/Sound Profiles (F10A): GB5T-14G379-AA > ECU Configuration/Illumination Strategy (F16B): HB5T-14G379-BA See your PM… ---
**Author:** ![831wdp](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/8/848f3c/32.png) [@831wdp](https://community.cyanlabs.net/u/831wdp)\ **Post date:** [1 January 2026 05:39 UTC](https://community.cyanlabs.net/t/callibration-files-needed-for-failed-update/24543/3 "2026-01-01T05:39:46Z")
Hey, I’m currently trying to flash a firmware update to my 2017 f450 APIM, its a late H/Early J series. looking to upgrade to the MY18.5 Firmware, specifically yall have listed ”””3.2/3.3 APIM NAV & NON-NAV Unit Firmware (Production Release, 2018.5, Late J thru K Series) Secondary Boot Loader: GB5T-14G376-AA Strategy (F188): 1U5T-14G374-DA (6/27/2018) Calibration (F124): 1U5T-14G375-DA (NAV) / 1U5T-14G375-CA (NON-NAV) ECU Configuration/Sound Profiles (F10A): GB5T-14G379-AA ECU Configuration/Illumination Strategy (F16B): JB5T-14G379-BA (6/7/2018””” Its a Nav unit, North America, etc so thats what im basing my information off of, I cannot find a place to download the calibration files for this anywhere, Motorcraftservice doesnt show them under the download like PCM files do, wondering if you might be able to help, you seem damn good at this from what ive been reading. Thanks again. ---
**Author:** ![bill32399](https://community.cyanlabs.net/user_avatar/community.cyanlabs.net/bill32399/32/2724_2.png) [@bill32399](https://community.cyanlabs.net/u/bill32399)\ **Post date:** [1 January 2026 05:46 UTC](https://community.cyanlabs.net/t/callibration-files-needed-for-failed-update/24543/4 "2026-01-01T05:46:39Z")
Here is the download page for Ford calibration files. If it does not come up than maybe F150Chief will have it or it has been superceeded. [FJDSSupport - FordServiceInfo.Com](https://www.fordserviceinfo.com/diagnostic/Support?channelId=50&categoryId=288) ---
**Author:** ![cvasquez636](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/c/ecd19e/32.png) [@cvasquez636](https://community.cyanlabs.net/u/cvasquez636)\ **Post date:** [1 January 2026 05:51 UTC](https://community.cyanlabs.net/t/callibration-files-needed-for-failed-update/24543/5 "2026-01-01T05:51:46Z")
Thanks for the info, the apim wouldn’t let me upload the original firmware I did some experimenting and was able to get it to turn on using a calibration file that started with h5gt and then it let me upload the original firmware. Thank u very much for the info it did help in getting working again ---
**Author:** ![831wdp](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/8/848f3c/32.png) [@831wdp](https://community.cyanlabs.net/u/831wdp)\ **Post date:** [1 January 2026 05:57 UTC](https://community.cyanlabs.net/t/callibration-files-needed-for-failed-update/24543/6 "2026-01-01T05:57:31Z")
Yes sir I tried via the calibration file Downloader on motorcraftservice and it said “request failed” for each one, I use it frequently for PCM or PSCM modules with IDS. But nothing for the APIM codes. Hopefully someone has em downloaded ---
**Author:** ![system](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/s/bcef8e/32.png) [@system](https://community.cyanlabs.net/u/system)\ **Post date:** [31 January 2026 05:57 UTC](https://community.cyanlabs.net/t/callibration-files-needed-for-failed-update/24543/7 "2026-01-31T05:57:56Z")
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