AVG Anti-Spyware manual updates.
Download the
Full database to your Desktop or to your usual Download Folder and
install it by double clicking the file. Make sure that AVG Anti-Spyware is closed before installing the update.
If you're having problem downloading others as well, you can try downloading them on a flash drive or a cd using another computer with connection, and then install them on your machine.
I would also suggest that you print those instructions so that you can have access to them when you are in Safe Mode during the fix.
Good luck.