Originally Posted by goblinbox
I'm having the same issue: "Update your Kindle" is grayed out. I have a K2 running 2.3.
You have to make sure you're using the correct file for your Kindle. Check your Kindle serial number:
B002 = Kindle U.S. = update_screensaverhack-install-K2.bin
B003 = Kindle International = update_screensaverhack-install-K2i
B004 = Kindle DX U.S. = update_screensaverhack-install-dx.bin