Did I brick my phone? - Verizon LG G3

I was in the process of installing a new rom on my phone, I have been rooted for months,everything was fine, now when I installed the new rom via TWRP and rebooted my phone wont turn on, I just get a flashing notification light alternating between blue and green and it just sits there, I can't even boot back into recovery using Volume down + power, I just get a black screen.

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f575gtc said:
I was in the process of installing a new rom on my phone, I have been rooted for months,everything was fine, now when I installed the new rom via TWRP and rebooted my phone wont turn on, I just get a flashing notification light alternating between blue and green and it just sits there, I can't even boot back into recovery using Volume down + power, I just get a black screen.
Click to expand...
Click to collapse
so it seems like my phone is working in the background, but the screen is still black, if I tap things I can hear noises, I think I hit the emergency call button and was hearing the phone being dialed.
So now I need to find out why my screen would just go out like that, and if its the brightness that is completely low or something else.
if I plug in my phone to my computer and pull out the battery, my screen turns on with a flashing missing battery box and I can see the background of my phone, but I can't do anything else.

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This kind of problem is commonly caused by a mismatch in partitions from various versions. Am example would be if you flash the 35B bootstack and then after that flash either JasmineROM 9.0+9.1 or SkyDragon 6.02, and you don't reflash the 35B bootstack again after that.
Both of those ROMs have an incomplete collection of partitions from 24B which would overwrite the ones from the 35B bootstack, and the mix of the 24B ones with what 35B ones that weren't overwritten results in that.
If you go through the motions of putting the phone in Download mode (you can pull the battery to make sure and stay with it off), and if you already have the Verizon LG drivers installed, you can see the phone is in Download mode by looking in Device Manager in the Modem section.
Use LG Flash Tool 2014 to flash the 10B KDZ, re-root with the Stump app, put TWRP on with TWRP Manager from the Play Store, then reflash what you want.
If you want the 35B bootstack on either of those two ROMs, flash it after the ROM, not before. If you don't want the 35B bootstack, flash the 24B bootstack before flashing the ROM.

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I can't get the phone to go into download mode, with the battery off, the second I plug into my PC the phone turns on instantly into a faded setup wizard that looks like it has 2 wizards over laid on each other and in the middle a dark cloud with a battery icon and flashing red question mark.
holding volume up and power won't do anything.
Also my pc is being stubborn, I installed the LG g3 Verizon drivers and it shows exclamation marks on the phone's entry in device manager, should I do this in windows XP?
so it seems my phone does go into download mode, the overlay I am seeing is the setup wizard for the phone and the firmware update screen behind it..
still can't get the drivers to fire up though

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f575gtc said:
I can't get the phone to go into download mode, with the battery off, the second I plug into my PC the phone turns on instantly into a faded setup wizard that looks like it has 2 wizards over laid on each other and in the middle a dark cloud with a battery icon and flashing red question mark.
holding volume up and power won't do anything.
Also my pc is being stubborn, I installed the LG g3 Verizon drivers and it shows exclamation marks on the phone's entry in device manager, should I do this in windows XP?
so it seems my phone does go into download mode, the overlay I am seeing is the setup wizard for the phone and the firmware update screen behind it..
still can't get the drivers to fire up though
Click to expand...
Click to collapse
After having installed the Verizon LG drivers, I recommend rebooting the PC (with the phone disconnected).
The correct way to get into Download mode is by, with the phone completely off, press and hold the Volume Up button (but not the power button), then while continuing to hold the Volume Up button, connect the original USB cable to a USB 2.0 port directly on the PC, not through a hub) and to the phone. In a moment you should see the Download mode screen and you should let go of the button.
The first time you do this on a different USB 2.0 port, Windows can take up to 10 minutes to load the driver that you had installed. Leave the phone connected for at least that long and then verify if the icon in the Modem section of Device Manager looks normal then, not with the exclamation point.
Edit: I didn't see until later that you say it does go into Download mode - never saw the Download mode overlaid by the phone setup wizard. If that's accurate, something's weird since Download mode doesn't get loaded in Android.

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I think this phone is shot, I followed your instructions, the phone boots up to the firmware upgrade screen but I can still see "setup wizard" behind it really faint, and the PC continues to not recognize the phone

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f575gtc said:
I think this phone is shot, I followed your instructions, the phone boots up to the firmware upgrade screen but I can still see "setup wizard" behind it really faint, and the PC continues to not recognize the phone
Click to expand...
Click to collapse
Very, very strange.
You can't get into TWRP either? Hold Volume Down and while holding it, press and hold Power, then when stock recovery pops up, let go of the buttons, and use the volume and power buttons to select Wipe Cache or Factory Reset - either should take you to TWRP.
What ROM did you install, anyway?
If you can get into TWRP, try flashing the 35B bootstack from @xdabbeb 's VS985 v2.0 ROM thread in Devleopment, then try to get into Download mode again. You might even be able to select from TWRP's reboot menu off the main menu, to reboot into Bootloader, which I think takes you to Download mode too. I haven't actually tried using it that way too - I'd try the regular way of getting into Downloade mode first.

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I just did the same thing to a send LG G3 I bought, you gotta be kidding me....
Tried to install Jasmine 9.0, then updated to 9.1 and ran the debloat option, that seems to be killing my phones, this was a $150 lesson that I am avoid Jasmine Roms from now on. I can restore the new phone either, won't boot up into recovery, or anything.
my PC picks up the phone, but the screen is black so I can't tell if its in download mode, and LGflashtool 2014 won't recognize the phone.
I am at a loss for words.

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f575gtc said:
I just did the same thing to a send LG G3 I bought, you gotta be kidding me....
Tried to install Jasmine 9.0, then updated to 9.1 and ran the debloat option, that seems to be killing my phones, this was a $150 lesson that I am avoid Jasmine Roms from now on. I can restore the new phone either, won't boot up into recovery, or anything.
my PC picks up the phone, but the screen is black so I can't tell if its in download mode, and LGflashtool 2014 won't recognize the phone.
I am at a loss for words.
Click to expand...
Click to collapse
I forgot to mention in the JasmineROM thread - I think that was you talking about the issue there too, right? Even if the phone screen is black as long as you see it in Device Manager under the modem section, then you're in Download mode. Then you can use LG Flash Tool 2014. Make sure and give Windows up to 10 minutes to load the driver. Don't use a USB hub.
Pull the battery to make sure the phone is off. Connect your original USB cable to a USB 2.0 port on your Windows PC - don't have the phone end connected. Press and hold the Volume Up button, and while keeping it pressed, insert the USB cable into the phone. Even if it doesn't vibrate - that's okay, although it might, too. Let go of the Volume Up button after two seconds. After giving Windows enough time to load the driver, you should see it in the Modem section. If you don't see it, check under the Ports section and see what it says.

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So when I plug my phone into my PC my device manger shows LGE Mobile for VZW USB Composite Device and it says this device is working properly, but when I try to run LG flash 2014, I get an error saying my Device isn't plugged in
well I got it past the "not connect" part but now I am getting a connection to server failed, try again in a moment

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f575gtc said:
So when I plug my phone into my PC my device manger shows LGE Mobile for VZW USB Composite Device and it says this device is working properly, but when I try to run LG flash 2014, I get an error saying my Device isn't plugged in
well I got it past the "not connect" part but now I am getting a connection to server failed, try again in a moment
Click to expand...
Click to collapse
Just ignore error dialogs like "can't connect to server". Drag the error dialog out of the way, don't click any buttons in it. Within 5-10 minutes you should find your phone successfully flashed.

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roirraW "edor" ehT said:
Just ignore error dialogs like "can't connect to server". Drag the error dialog out of the way, don't click any buttons in it. Within 5-10 minutes you should find your phone successfully flashed.
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Click to collapse
completely ignore it? because I hit "OK" and then on the screen screen my S/W upgraded starts and errors out at 4%
Ok so I noticed the progress bar behind the connection error box, but that is the same one that errors out at 4%. The only thing I can try now is the original cable which I don't know where it is, I've tried 3 different usb cables already though.

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Use The Specific Trademark Program Of Your Device On your Computer, E.,g(Flashtool,Odin,) And Flash An Stock Rom On It

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f575gtc said:
completely ignore it? because I hit "OK" and then on the screen screen my S/W upgraded starts and errors out at 4%
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Click to collapse
Yes, completely ignore it. Don't hit "OK" or any other button on the dialog, just drag the dialog out of your view if you must. It's common, it happens a lot although not all the time.
http://forum.xda-developers.com/showpost.php?p=56484818&postcount=2:
annoyingduck said:
*Error Update* So with this leaked LP image, I've been playing with kdz'ing quite a bit and with a new Windows install I got to experience a few of the issues being reported by others that I have never seen, along with trying to troubleshoot some others. Did I manage to fix them easily you ask?? Hell yeah!
USB Disconnected Issue: This is a driver issue. Very easy fix, just download the latest Verizon drivers from the link I posted above and install them without phone plugged in. Power off phone, hold up, plug into usb and WAIT for download mode drivers to install (as stated several times in this thread). Click the balloon to watch the progress, this took about 10min on an i5/ssd machine - be patient. This is the predominant issue I think people are having. The drivers while in download mode are:
-USB Composite Device
-LGE Android phone or LGE AndroidNet for VZW USB Serial Port COM5 (this is the important one)
-CDC Serial or LGE AndroidNet for VZW USB Modem (this will fail if you are on a rom with certain VZW items removed - not a problem, its not needed)
-CDC ECM LGE AndroidNet for VZW NDIS Ethernet Adapter
If driver install fails, manually update them by pointing windows to the driver file you downloaded. I am not going any further here, use Google.
??????'s In The Field: easy, don't change region or language from Korean as stated in the OP. Leave it alone, it will flash in English I promise you. Result = all fields readable in English while running
Connection To Server Failed: Simple, ignore the window. Just drag it away, but don't close it. This is an offline hack originally indented to run online, deal with the window!
Progress Bar: The tool will initially analyze the phone, then when flashing starts, pay attention to the phone screen which will now say COM5. The blue progress bar on the phone is the important one. At around 80% on the tool screen, the phone will reboot. The flash is over and the bar will continue to progress into the 99% while rebooting - then the program will crash. You can disconnect now, you've been successful.
Click to expand...
Click to collapse

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*Error Update* So with this leaked LP image, I've been playing with kdz'ing quite a bit and with a new Windows install I got to experience a few of the issues being reported by others that I have never seen, along with trying to troubleshoot some others. Did I manage to fix them easily you ask?? Hell yeah!
This part is confusing me, I am getting an error updating, but what does he mean by the latest 35B leaked image? should I try this with 10B?

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f575gtc said:
*Error Update* So with this leaked LP image, I've been playing with kdz'ing quite a bit and with a new Windows install I got to experience a few of the issues being reported by others that I have never seen, along with trying to troubleshoot some others. Did I manage to fix them easily you ask?? Hell yeah!
This part is confusing me, I am getting an error updating, but what does he mean by the latest 35B leaked image? should I try this with 10B?
Click to expand...
Click to collapse
23A, 23B and 23C_00 were leaks of Lollipop. Try what exactly?
I was mainly trying to highlight:
Connection To Server Failed: Simple, ignore the window. Just drag it away, but don't close it. This is an offline hack originally indented to run online, deal with the window!
Click to expand...
Click to collapse

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Im still trying to get around the issue when it gets to the S/W update and then errors out around 4%.
I don't know what else I could be doing wrong.

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f575gtc said:
Im still trying to get around the issue when it gets to the S/W update and then errors out around 4%.
I don't know what else I could be doing wrong.
Click to expand...
Click to collapse
Try any/all of the following?
Reboot the PC?
Use a different USB 2.0 port?
Use a different quality USB cable?
So you're saying even if you ignore the error dialog that it stops at 4%?

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Yes 4% and I get a complete error.
I am going to try an official LG cable to see if it helps

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f575gtc said:
Yes 4% and I get a complete error.
I am going to try an official LG cable to see if it helps
Click to expand...
Click to collapse
Since I said two days ago about using the original USB cable and you didn't comment, I figured you were already.