They updated my expensive printer's firmware to reject aftermarket toners. As I was starting to print a shipping label for an Etsy sale, my printer quit working. After doing a little research, I found that it doesn't take much to downgrade the firmware and stop automatic updates. That did the trick. Now, let's hope I don't have this problem again.
meluworld:
OMG you know how to use Etsy? :) can you teach me?
cruorem_angelus:
I'd be happy to.