OK..I was DEAD in the water. Spent the last 2 days trying to un-brick the phone.
Samsung S3, VZW i535, Rooted, partially un-bloated, and unlocked until !@$#! upgraded itself to Android 4.3 (#@!%$!#%@#$%@#$%@#$)
Unwittingly while trying to do a full Nandroid backup of the system, I ran across a problem which looked like it needed to be unlocked again. Upon unlocking it still worked, until I attempted the CWM recovery backup - Instant Black Screen power off.
Unresponsive to Power. Unresponsive to Power+Home+Vup - Unresponsive to Power+Home+Vdn. Not visible to ODIN or to USB...it would have a red-light when plugging in ISB for about 5 mins, then red light off. No vibration, no flicker of the screen, nothing. 100% UNResponsive phone.
I attempted a Jog - No Dice. Forget it.
I attempted to use WinDisk32 to create an image of "Verizon_Galaxy_S_3_Debrick.img" to the SD Card from the video of the kid thats 10:22 long, and his second video thats 12+ min long. Nope. Nada (I attempted at least 20 times)
His video ONLY works from pre 4.3 upgraded phones. He spent so much time doing that video he should add the extra link to the other debrick.bin file and he would be a guru!!! hehe
Attempted a few other thing as well since I now was sure it was fully hard-bricked FUBAR.
Then I kept thinking to myself that it must have something to do with Android 4.3 and its bootloader...came here again and found this thread which lead me to the "After 4.3 upgrade" file of "Debrick.bin" - Used WinDisk32 to the SAME SD card, stuck it in, stuck battery in, and worked first time.
Can Only boot with SD card in phone for time being but hey, im 100% up. And I also can make the SD card back to its full 16GB using SDFormatter - free on the net.
Thank you all.
note: I think we need a new term: "Hard-Soft-Bricked" - reason is that if the power buttons still send a signal to the board to attempt a boot from the CD Card, then its technically still responsive, we just cant see that its responsive. Unlike a total hard-brick that isnt really doing anything from the buttons at all and only responds to a powered JTAG attempt.