I'm bricked .. Getting worries. (Yes I've read the forums ...)

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http://forum.xda-developers.com – Attempted to flash Liquid Jelly Bean, then got stuck on the animation boot screen. I've tried Root tool kit for unbricking and setting it back to stock. Tell me it's successful but stays stuck on the animation screen. I've also tried to unbrick manually however even though I have the correct files placed in my Platform Tools folder of Android SDK ... I constantly get stuck at the CMD prompt steps. Any time I type in "fastboot flash bootloader bootloader-grouper-3.34.img" or anything similar I get the error message in CMD saying "___ Is not recognized as an internal or extern (HowTos)