ECU module programming guide using FDRS

[Slappy McGee]

Final note I've captured a video of the OTA fix procedure and should have that up by the end of the day if you want to see it before attempting it.

It's a beast of a video, but here's the end-to-end procedure to clear the "stuck" OTA that ultimately worked for me:

Fixing the 2021 Ford F-150 Broken Over-the-air (OTA) Updates for BlueCruise - YouTube

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[antho]

So my truck is failing to flash this MU5T-14H116-CA, but ive searched all my modules and cant find it in any of them. How can i find out where its missing from and how do i get it? Would a PMI fix this? Still trying to get the Module Update Repair to work. I assume it should be in either the Apim or TCU but neither of those have a line of code with that in it.

What module are you updating when it fails?

 

[Ruffiano99]

What module are you updating when it fails?

Trying to do the OTA fix from the TSB.

 

[Slappy McGee]

What module are you updating when it fails?

Have you tried leaving the Truck overnight? I know this sounds like tech support telling your to "Ctrl-Alt-Delete" as the response to every problem, but it worked for me when I was getting an InitializeCommsHost error on a GWM update.

 

[BHunted1]

I mean what does it look like on the screen compared to FP.... looks fine from what I can see.

 

[antho]

Trying to do the OTA fix from the TSB.

@Ruffiano99
Watch @Slappy McGee linked video. His fails at the same file @ 17mins
Looks like he had a USB plugged in and onced he removed it, It worked.

 

[Ruffiano99]

Have you tried leaving the Truck overnight? I know this sounds like tech support telling your to "Ctrl-Alt-Delete" as the response to every problem, but it worked for me when I was getting an InitializeCommsHost error on a GWM update.

Yep i let it sit. Also made sure my usb and anything else plugged in was removed. Still getting the same failed to flash as you did. If been hung up on it for a few days now. In ur TCU does ur f188 line actually read MU5T-14H116-CA. Or one of the lines in TCU

 

[Ruffiano99]

Attempted to do a PMI on the TCU and got this message… ??‍

 

[FordConvert]

Dumb question: how does one “PMI” a module?

 

[Snakebitten]

Dumb question: how does one “PMI” a module?

It's a procedure in FDRS

 

[FordConvert]

Getting this only when I attempt to update the GWM now. Anyone run into this?

 

[Ruffiano99]

Getting this only when I attempt to update the GWM now. Anyone run into this?

You may not have picked the right device when it asks how you are connecting to the vehicle. Make sure you selected the Nano or Mongoose whichever you are using.

 

[FordConvert]

You may not have picked the right device when it asks how you are connecting to the vehicle. Make sure you selected the Nano or Mongoose whichever you are using.

It's the mongoose and this is the second truck I've updated. First truck is at BC. This only happens when I try to talk to the GWM for an update. Otherwise scans network and updates just fine.

 

[antho]

Attempted to do a PMI on the TCU and got this message… ??‍

I had this issue when i tried to update too far away from my wifi. May want to log out log back in and refresh the update/download and try again. Make sure your within wifi range.

 

[Ruffiano99]

I had this issue when i tried to update too far away from my wifi. May want to log out log back in and refresh the update/download and try again. Make sure your within wifi range.

Oh maybe. Ill retry later. I was connected to my phones hotspot when i tried. Didnt have full bars. That could be it.

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