If you want you can also update the Sync version to 3.4.23088 or 3.4.23188 (this corrects the RWDATA issue/log files not compressing, which is/was the issue with the 3.4.22251 version) from Cyanlabs and yes it can be done with a MY20 APIM. Just follow the instructions. You can then update to...
I haven't downloaded the 23188 yet either....I am still weighing the risks vs. options ...I know of many others who didn't have issues...but my luck LOL.
I was told that the 3.4.23188 will be released by Ford end September, you can get it from CyanLabs.net. They Syn3 Updater is available to update to 3.4.23188, this version fixes the SLOGS, which in turn fixes the issues of 22251 going to default due to the RWDATA memory depletion