No I've tried that I'm good about the whole timing thing to get in to either mode. So not sure still I saw a thread on an unbrick image that you can put on an sd card and it boots from that but I have no clue on how it is done.
True there is a thread on that, but you have to be able to get into recovery, stock or custom so that you can toggle to the sd card. So just to be clear, you are holding down the power button, volume down button, and the home button at same time under constant pressure until a screen with a yellow triangle comes up asking if you want to go to download mode by pushing the volume up button or reboot the device by pushing the volume button down.
BTW here is a way to do it without toggling to your sd card. Here is the link for a SM-N900P unbrick img. for your sd card
http://forum.xda-developers.com/showthread.php?t=2651696&page=2 go to post #19 and download the file to your PC desktop, remove the sd card from your device and install in the adapter that allows it be installed in your PC. (black plastic adapter that comes with ext sd card) First, backup all data on sd card to PC. Format/erase your SD Card, then copy and paste .img file to sd card, install back in phone and boot up device. Once phone is booted, and settled down a minute power down device. Pull sd card, boot phone into download mode and use odin to flash a fresh copy of NC5 on phone. install sd card back in PC and format/erase it, now install back in device and all is back to normal.
Got the info from here
http://forum.xda-developers.com/showthread.php?t=2600869 but you don't have to create the boot img file someone already did it in the link above on post #19.