[Galaxy S 4 Q&A, Help & Troubleshooting] titaniums4:
Hello dear friends, this is my second phone from tmobile as they sent m a defective one before, I have been out of a phone for around a month or so, and finally got one that worked. I modded it and everything worked fine.

I downloaded and installed http://xdaforums.com/showthread.php?t=2539361

Everything worked fine, until today the app "OTA Update" told me there was a new update for my firmware. I decided I would update it since I thought it was the latest version. The update installed and it reset my phone. When my phone reset, it went into TWRP Recovery mode, I already knew something went wrong but I decided to just restart the phone and see if it would still work.

Once I restarted my phone, the screen turned "beige color" (light brown) with a white line across, I started getting worried and removed the battery.

When I tried turning on the phone again, nothing would work. If I hit the power button I get a response from the phone with a vibration. However everything is black, I see no Samsung logo nothing, just a vibration. Also the 2 physical buttons next to the power button work and vibrate and sometimes turn on if I touch them.

Download Mode

It seems my phone can barely manage to get into download mode, by that I mean the screen will remain black, however If I press the button combination to enter download mode, the screen stays black, however in ODIN it says my device is connected. I tried installing the stock ROM however I get this status:

<OSM> Leave CS..

<ID:0/005> Odin v.3 engine (ID:5)..

<ID:0/005> File analysis..

<ID:0/005> SetupConnection..

<ID:0/005> Complete(Write) operation failed.

<OSM> All threads completed. (succeed 0 / failed 1)

I also tried reinstalling TWRP so that I could get some sort of recovery, however ODIN installs it fine, but when I try to boot into recovery, my screen remains black.

If I plug the phone into my computer it is recognized by the computer as SGH-M919 however there are no folders inside of it, and the phone's LED goes yellow to indicate it's charging.

How screwed am I? Is there anything I could possibly do to restore this phone back to normal? I have such a big headache right now, and I am desperate for answers. Google has yielded no results. Please, I ask someone who has been in this situation to help me.

Edit: I somehow managed to turn on the phone, HOWEVER the screen remains black. And I can press the volume keys and hear the phone raising the volume, if I press the key down it goes lower and lower and to vibrate. The whole time I turn on the phone the screen remains black. I can feel the touchpad vibrate when I press it (Im assuming im at the lockscreen), however I cannot see anything.

Edit #2: Somehow, I don't know how, I managed to get download mode working (still black screen), I used odin to flash the stock rom, here are the results:

<ID:0/004> Odin v.3 engine (ID:4)..

<ID:0/004> File analysis..

<ID:0/004> SetupConnection..

<ID:0/004> Initialzation..

<ID:0/004> Get PIT for mapping..

<ID:0/004> Firmware update start..

<ID:0/004> SingleDownload.

<ID:0/004> aboot.mbn

<ID:0/004> NAND Write Start!!

<ID:0/004> sbl1.mbn

<ID:0/004> sbl2.mbn

<ID:0/004> sbl3.mbn

<ID:0/004> rpm.mbn

<ID:0/004> tz.mbn

<ID:0/004> boot.img

<ID:0/004> recovery.img

<ID:0/004> system.img.ext4

<ID:0/004> cache.img.ext4

<ID:0/004> hidden.img.ext4

<ID:0/004> modem.bin

<ID:0/004> NON-HLOS.bin

<ID:0/004> RQT_CLOSE !!

<ID:0/004> RES OK !!

<ID:0/004> Removed!!

<ID:0/004> Remain Port .... 0

<OSM> All threads completed. (succeed 1 / failed 0)

However, nothing was fixed. When I try to turn my phone on now, I see a blue LED and I can hear the tmobile sound when I turn on my phone, but my screen remains black.