I have googled and searched and I can find lots of out-of-date instructions for how to update the version of flex used in Flash Builder 4.7. They all seem to refer to older Adobe releases of the SDK. I haven't been able to find any instructions for how to update to the latest Apache version. (I need the latest so I can submit my app to Apple). (Before someone tries to tell me to use the Apache installer, I tried that and it dies half way through with an error 2038 - and even then I'm not convinced its installing the right stuff for Flash Builder).
So can someone please tell me how to update FB 4.7 to Flex 4.13??