Lego dimensions-toy pad update xbox 360

Hi,

I am definitely in over my head with an update issue for Lego Dimensions. I know that they are no longer supported, but was able to find .exe files for lego dimension packs we recently purchased on ebay. Goonies and Teen Titans. The issue is that I dont know how to get the updates on the console. I have the files on a usb drive formatted to FAT32 and was trying to transfer 4gb to the console at a time- the entire file is 15gb. When I plug it in- it is recognized as a storage device with no transferable files.
Is there a way I can get the Lego Dimensions game to manually update with the files that I have on the usb drive?
Is there another way my kids can get the yelloe tag toy pads-wave 2 to be recognized in the Lego Dimensions game?

Thanks for any help-
Alyssa