Samsung Galaxy Player 5.0 won't turn on after messing with build.prop I went to mess with my build.prop to do some stuff and then my device wouldnt turn on. I tried looking everywhere for ways to fix it but none will work because it keeps ending with when im in cmd with the adb stuff, when I type the commands it says "operation not permitted".

Heres the tutorial I was looking at (the wndows one) - http://forum.xda-developers.com/showthread.php?t=1927198

I was able to get to the very end until I had to do "chmod 644 build.prop" which then resulted in the "operation not permitted".

I also have a copy of my original build.prop in my device sdcard folder however Im unable to pull it out (or im just an idiot)

Please help, ive been sitting here for 6 hours straight trying to fix this!
Are you sure you're rooted?
If so, have you tried su -c chmod 0644 /system/build.prop? Or you can also try entering su first and then the chmod command next.

To pull the build.prop: adb pull /sdcard/build.prop
Or maybe you can just replace the one in /system with the one on your sdcard:

su
cp /sdcard/build.prop /system/build.prop
chmod 0644 /system/build.prop