Today I got an AVG update request and I checked the box. Now my Firefox and Google home pages are gone (and my favorite sites with them). How do I get them back?
I wrote an article about getting rid of Chrome hijackers, which you should check out and make sure AVG didn't take control anywhere else.
you mean favorites were deleted?
How to Recover Accidentally Deleted Bookmarks in Chrome & Firefox
In Google chrome: Open setting tab >> in On startup tab >> check Open a specific page or set of pages by clicking on Set Pages.
In Mozilla Firefox: Go to Tools >> Option >> General >> and check your home page link from home page text box.