traxem
Full Access Member
- Joined
- Jul 10, 2018
- Posts
- 313
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- 127
There was a Ford Engineer on another Ford forum answering questions about this update and hack. Essentially, the difference is the APIM firmware. If you don’t update it, Sync 3.4 is software incompatible with the APIM and some of the climate settings might act up. I haven’t had any issue so I’ll just hold out on the firmware update until I need to do it. Firmware updates can be tricky and can brick the system, which means that Ford will probably want you to take it to a dealer for the update. We’ll see where this goes...
https://www.fordescape.org/threads/sync-3-4.112910/
https://www.fordescape.org/threads/sync-3-4.112910/