Archive: Update all versions of Ford Sync 3 to the latest Sync 3.4 (Build 3.4.19200)

You could replace the 19101 file with 19274 and reflash with the reformat tool but this would potentially lock you at 19274 as you wouldn't have enough space to downgrade to 19101 or 19200 again

No official changelogs, most likely bug fixes.

I'm unsure what you are asking. If you took note of your ivsu files you can easily go back to old versions

No need for this file. I have updated the guide to reflect this.

Thanks for the information, no there are no known official changelogs for these builds, likely bug fixes and maybe specific car fixes.

Great :) glad it worked out

You can't install Na 1.18 maps without the license file hence the need to use the reformat.lst

Question, Will features like in car WiFi or rear entertainment headrests be affected by this upgrade?

I have my adapter and forscan premium account but I am nervous to try.

it shouldn't but i have no car that has this feature

So it's safe to say that any factory installed stuff that works with 3.0 should continue to work with the upgraded system. I know things like my tow package do show info on the instrument cluster, and my in car wan does have config options in the head unit display.

Also, I bought the odb link adapter that forscan suggests, and purcahsed a lifetime forscan extended license but I'm scared to try the APIM firmware upgrade unless I can chat with someone who has done it already, that speaks english :)

Last thing is me wondering about downgrade just in case this fails - given that I took screenshots of all the values in the diagnostics screen, I can recover from nearly anything?

PS: I'd be willing to tip for some real time support when I do this.

Hi, I can't guarantee it due to the nature of this but worse case is usually that you need to re-enable some stuff in Forscan, i don't know of anyone who has lost features and not been able to get them back with Forscan, however ofcourse you can always be the first :(

I wouldn't recommend using Forscan to update the APIM firmware personally, it's experimental and it's slow, get someone with UCDS to do it.

In theory provided you can find the files to match the files you already have then you can downgrade back to that version, if not you can still likely downgrade to a similar version,

Provided it's a suitable UK time i'm happy to assist.

**edit ** I may be back on track, usb2 was the wrong update usb and now its 'updating apps package' so I bet I'm ok.

So I am having issues, after I did the first usb stick it rebooted, I'm on the red screen, and I've tried to reboot the car with the door open. I've tried using the second usb stick, etc.