Please.
I am reading about upgrades and not being able to do them if you have a hack installed. First of all how do you KNOW there is an upgrade available?
Do they send you something via kindle? Will I get it if whispernet is turned off mostly? (i only turn it on to receive a book I ordered)
Also, if there is one available, can I uninstall the screensaver hack to then install the upgrade, and then reinstall the hack afterwards and all will work again?

So confusing. Sorry if this has been discussed. Still a newbie!

TIA