I've come across the need to clear the cache for my HTMLResources folder.
At the moment, if I update the files in HTMLResources.zip and re-upload, it doesn't always pull the latest/current version of everything in there – presumably because some files have been cached and since they're of the same name, it doesn't bother updating them.
Removing the folio from the device and re-downloading doesn't work.
I did a quick search to find an answer and came up with this discussion. From the looks of things, the only way to clear the cache is to delete the Adobe Content Viewer app and reinstall it – and even then, it doesn't always work.
A clear cache function would be great to be able to properly test web content in folios.
Incedentaly when I did delete/reinstall the ACV app I didn't need to log in again... that's weird, right?