I already updated to 20136 and everything is working as designed to. No glitches or bugs. Here is what I did.
1st watched the video on youtube on the upgrade and how to remove and replace.
found a new sync3 apim dated 2018, 3rd generation. (On eBay) non Navi 200.00
found a recesssd screen, (not flat sided), that explorers use. (On eBay) 169.00
Purchased usb hub for CarPlay Amazon 50.00
Purchased gps antenna Amazon 20.00?
Purchased the special power harness that plugs into the factory harness to usb hub eBay 14.00 (there are 3 types, make sure to look up your year to get correct one. there is gerneration 1, 2, 2a
Paid 60.00 to member of forscan forum to write asbuilt info to program apim using ForScan.
Sync 3 Programming for Ford / Lincoln Vehicles this guy will give you explicit instructions to program apim.
Purchased extended license from forscan and the diagnostic reader with can switch.
Pulled sync 2 apim and screen, removed the brackets and I installed on new screen.
pulled the stereo (below apim) and box below that and installed the hub with new wire.
reassembled
Installed the gps below the center speaker with thick 2- sided tape.
Mounted the new apim and turned on key.
plugged in the reader and opened forscan. Followed the instructions from the guy I bought the asbuilt info from. Turned off key and back on. Everything booted up and boom. I had sync3 working flawlessly.