If it's rooted, I think the easiest way to fix it is to restore the original build.prop file. You can do it using adb probably, even if the device doesn't finish booting Android. You can use it to get the current build.prop Code: adb pull /system/build.prop then send it back (after fixing it, of course): Code: adb push build.prop /system/ You may need to use a text editor on your computer that supports Unix line ends. If you don't know what adb is, look for more info about Android SDK. You will need to connect your tablet to your computer using USB. PS: that's why it's always a good idea to backup any file you modify, so you can put it back if anything goes wrong.