Hi @F150Chief
Thank you for your advice re: options for updating my H series APIM. I understand that going to MY18.5 maybe/probably won’t resolve my flickering issue. But at the same time it is probably OK to do it (others with H series APIMs have done the upgrade and been OK).
So I think I would like to try to go to 3.3/MY18.5 anyway, if only to prove to myself that there is no change in behavior. I did save your instructions and the requisite files to recover my 2nd gen APIM if a flashing to 3.3 goes awry, so I feel the risk is minimal. Would you be willing to post or point me to somewhere I can download these files?:
1U5T-14G374-DA
1U5T-14G375-DA
JB5T-14G379-BA
Another question: in reading a guide on the fmods forum about upgrading an APIM to MY18.5, it states:
GB5T-14G379-AA.VBF - This is the ECU Cal-Config #1 AKA the Audio Profiles. For unknown reasons (at least to me) this shouldn’t be flashed on an US APIM, otherwise it will fail to boot. It’s the same across all Sync 3 APIM models.
1U5T-14G379-BA.VBF - This is the ECU Cal-Config #2 AKA Illumination Calibration. Just like the BT Audio Profiles, this shouldn’t be flashed on an US APIM, or it will fail to boot. It’s NOT the same across all Sync 3 APIM models. It should be ‘vehicle’ specific, but apparently you can flash whatever you want. It will works fine.
I don’t think I need to worry about the sound profiles file since my APIM already has GB5T-14G379-AA. But my Illumination Strategy currently shows as blank (perhaps it’s not used for the calibration level my APIM is currently at?). Your posts do reference flashing that file, so I wanted to see what you thought about the warning that flashing it would cause a US APIM to not boot.
The other sort of confusing thing in that post is this table:
1U5T-14G375-A*.vbf 8GB / 16GB EU without NAV
1U5T-14G375-B*.vbf 8GB / 16GB NA without NAV
1U5T-14G375-C*.vbf 8GB / 16GB ROW without NAV
1U5T-14G375-D*.vbf 32GB NA with NAV
1U5T-14G375-E*.vbf 32GB CHINA with NAV
1U5T-14G375-F*.vbf 32GB XX (it means ANY region) with NAV (Telenav)
1U5T-14G375-G*.vbf 32GB ROW With NAV (NNG)
1U5T-14G375-H*.vbf 64GB EU with NAV
1U5T-14G375-J*.vbf 32GB TURKEY with NAV
1U5T-14G375-K*.vbf 32GB UAE with NAV (NNG)
From looking at the current calibration on my APIM, I have a C for that digit. But according to the table, C means “8GB / 16GB ROW without NAV”. Is that just a mistake in the chart? Because my APIM most certainly has factory NAV. And I thought ROW referred to markets that aren’t NA or EU. My C-Max is domestic.
Anyway, I appreciate your time and patience. I’m fairly technically inclined, but still learning about Ford’s nomenclature and how everything fits together.