Modified "stock" boot img that removes corrupt msg & allows for RW/root & decryption?

Hey all, has anyone come across a boot.img that's been modified to get past the "corrupt" triangle & allows for root access with full RW to system? Most of the kernels I've tried so far result in reboots and random freezes. I wanna flash from factory image 6.0 and be non-encrypted with full root access. When I originally tried the boot.img chainfire posted, I ran into the corrupt device error. Thanks in advanced!

Is there a bluetooth controller that allows you to remap it?

I've tried the Nyko playpad pro and it's hot garbage. I've ordered 2 of them and they've both arrived dead. won't power on or anything. I've read a lot of reviews on it and see that you have to be lucky to get a working on. I'm looking for a bluetooth controller that works and a way to reconfigure the buttons on it. Is this possible? I want to use the controller for my Shield Tablet as well as the Shield TV. Someone thought it was a good idea to not allow you to remap sprint and crouch on DOOM 3, which is super infuriating.