Is my n910w8 bricked? - Galaxy Note 4 Q&A, Help & Troubleshooting

Hi.
I am using a N910W8 from wind mobile.
I got this phone not too long ago.
My last rom used was cm12.1. Nightly 2016 04 26
A few days ago, it started to hang, I did a system format via recovery and swiped fix permissions (huge mistake)
It booted up and I was installing my apps by play store when the phone hanged.
And now, my phone would only turn on if I pulled the battery out for a couple of minutes. My phone would keep freezing if I tried to install or rom, any rom.
It is unable to boot. Not even to the logo.
It would freeze if I basically turned it on for more than 30 seconds, in recovery or download mode.
Is my device bricked?
I am open to all suggestions and recommendations.
If I am missing any detail, just ask.

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