Originally Posted by NiLuJe
@Kozzi: Don't restart your Kindle with a custom .bin, that's why you got an error 3 screen. The uninstall process doesn't remove the linkjail folder. And if you got a U007 error when *installing* the jailbreak, it usually means that your Kindle is already jailbroken, or another jailbreak is not completely uninstalled.
I also thought of the possibility that jailbreak got installed successfully so before the uninstalling I tried to install the screensaver hack, but it returned instantly "update failed" with no error code.