Ford Motor Company periodically releases SYNC ® software updates to deliver the most advanced technology and this version was designed to hit some of the issues that have been out there — especially with ease of use. Updates are tailored to your SYNC with MyFord Touch ® system. Called Ford SYNC support and they seem to think the update was applied at the dealer but that it was never reported which is why it's telling me I need to update but won't let me. Support suggested I run a health report which will automatically update the vehicle record and version number and also check the SYNC version number in the Flex.
Small PSA. 4.6 is out for Gen 1 sync systems.
I just saw today that 4.6 (GG1T-14D544-AB) is available through the sync update tab at owner.ford.com.
So far the install hasn't worked for me yet, but that may be just due to a crappy usb drive.
Edit: Here is an image of the update with the release notes http://i.imgur.com/g1WnHzY.png
It appears that (as of 2 pm (I last tried at 12:20 pm) east US time on 4/19/16) the update isn't working or showing up for some people. I have contacted Ford about the issue and they have escalated the issue.
Edit: I was able to log into my box.net account and re-upload the file to Google drive. There may be some files that begin with .ds_ that will need to be removed.
https://drive.google.com/open?id=0B9D4AD6RZl6BbXVwcEZyRndVSHM <-- If the above link doesn't work, try this one. The first link was direct download, 2nd link is the share link.
PSA: New Sync software update available!
Attention all owners of Ford/Lincoln owners with Sync: there is an update available - https://owner.ford.com/tools/account/how-tos/keep-your-sync-up-to-date.html?gnav=header-owners
It looks like it applies to all non-MyFordTouch Sync systems and requires a usb drive to install.
I have a 2013 Ford Focus and I'm going outside to try and update my car within the hour. I'll update the post to let you know how I made out, or if my car bursts into flames.
EDIT 1: Success! I can now receive and send text messages with my Galaxy S5, and the Pandora integration is working now too. I also hooked my 4th gen Ipod Touch to the USB and it looks like they streamlined the artist and song info on the screen. I could be wrong but the playback quality also sounded better.
HERE IS WHAT YOU NEED TO DO BEFORE THE UPDATE:
Create an account on the Ford Owner website. Have your VIN ready and tell the site the number to the mobile phone you use.
Pair that same phone via bluetooth to the car and send a vehicle health report. To do this all you need to do is hit the voice command, say 'phone' then after the confirmation beep say 'vehicle health report.' It should automatically make a call to a 1-800 number and tell you when it's done/successful.
Ford needs to have this update to know which version of Sync you have, and I'm not sure how long it takes for them to get the information since I coincidentally sent a health report yesterday because my insurance uses the info to give me a discount (its State Farm's Drive Safe and Clear Program).
After these steps you should be able to follow the instructions and install the update. It took my car about 15 minutes to install the update. Please note that the car needs to be running in order to install the software.
PM me if you have any questions.
EDIT 2: Here's a Youtube link that should be useful for anyone trying to get started with the update. I include this because my friend who happens to sell Fords, didn't even know how to do the update himself.