I've been using the latest version of bootntr selector for a while, and I havent had any problems with the ntr.bin getting corupted...I found out what the problem is. For some reason the bootntr selector 2.3 can't create its own proper ntr.bin, and if you put a ntr.bin on the root of the sd card the selector will corrupt the .bin file. Instead I am using bootntr 3.4 for 11.2, the selector is nice but if it can't work correctly than its useless.