OTA just will not function

[65JohnyevMod]

I know this not a usual issue. I have fitted a 2021 Mach-e drivetrain to my 1965 Ford Falcon Sedan delivery . Every day or so I get the message that the OTA has not occurred and a download is next scheduled for 1:00 am the next day . If I turn everything off , keep the fob away from the vehicle, start the download , but it soon stops . I am warned that some other system is operating ??? What am I missing?

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[luckie]

Well, one thing you can check is your 12V battery. Since if it’s not charged up above 80% SOC and in good health that OTA will not take the risk of bricking the vehicle if the 12V fails during installation.

I believe you could read Mach-Lee’s “12V battery FAQ” to learn lots.