Originally Posted by Gondolkodo
...As far as I know this is the only way and there's no "block the ads" and "put screensavers" hack.
I tried it on my own K4 NT SO, works.
FYI, Mobileread disapproves of and does not condone circumventing the display of advertisements in advertisement-subsidized devices.
The ads can be removed without violating the Amazon TOS by going to the Manage your Kindle page at Amazon and shelling out the difference between the cost of the SO version and the ad-free version.