Installed Philz, GS3 won't power on, won't enter download/recovery modes


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Oct 19, 2013
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I wanted to return my Boost Galaxy S3 to stock prior to selling it. This phone worked perfect until I started fiddling with roms again. Now I can't do anything at all. I know I caused this and the hardware is perfectly fine.

I think what ultimately caused this was when I used CWM to install Philz Touch from a zip on the sdcard. Immediately afterward my phone exhibited this new, completely unusable state it's in.

Current Phone status:
--Won't power on. Nothing at all happens. No buzz, no logo. Nothing. (I have tried 3 batteries, all 80%+ charged)
--Won't enter Download Mode (Home, -Vol, Power)
--Won't enter Recovery Mode (Home, +Vol, Power)
--On PC, Odin doesn't see the phone (obviously) and Kies doesn't see it either. (using various cords and directly to back of PC)
--Plugged into PC will cause red light on phone to illuminate (even without battery). Plugged into wall power, the LED does nothing.
--Tried flicking the phone body around the power button (as I saw a common issue is it gets stuck)

So here's how I got to this point:
I rooted my phone years ago and upgraded the stock Boost to CyanogenMod and then I got lazy and left it that way for two years.
I recently planned to switch carriers so this Galaxy S3 was going to be sold at some point.
While looking for stock roms I found the CM13 Marshmallow 6.0 rom and got it running (while this phone was still active on Boost service).
Everything worked except for data (no 3g/4g signal). I decide to try some modem rom files which bricked the phone/text service completely and eventually my phone got soft-bricked.
All of the roms I had in archive kept failing during installation (Odin or through recovery mode)
I found/used a one-click Odin recovery rom and restored phone to 4.4.2 stock. Only thing was it was a Sprint rom. I decided I should try for a Boost rom. (I should have used Kies but didn't)
I found one but it kept failing while installing through CWM. The instructions called for using Philz Touch so that's when I got the zipfile and installed Philz Touch using CWM.

Now, here I am with a nice paperweight.

I have tried removing the battery and holding in the power button for 30+ seconds to de-energize anything left in phone. Doesn't help.

I'm open to any crazy ideas now.

Phone Model: SPH-L710
Samsung Galaxy S3 16GB

(re-posted here from another forum)

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