Database Users

Need Help, Black screen no boot.

I am new to the android world, I have a vibrant that I rooted using the update.zip method. Then I went to apply the LAG FIX using the same method from the RyanZA thread. Now all I get is a boot sound and a black screen along with the buttons on the bottom glowing. I have no Idea where to even begin to recover this. I have a mac, any suggestions would be helpful. Thank you in advance!

Fathom0195 said:
I am new to the android world, I have a vibrant that I rooted using the update.zip method. Then I went to apply the LAG FIX using the same method from the RyanZA thread. Now all I get is a boot sound and a black screen along with the buttons on the bottom glowing. I have no Idea where to even begin to recover this. I have a mac, any suggestions would be helpful. Thank you in advance!
Click to expand...
Click to collapse
That's a boot loop. In your case, being new and all, it might be better to re-install the ROM and try again. You might need to give it a while as well, I don't know the details of the zip you used, but it might be copying large amounts of data, which will look like a stall in the boot process.
Get ADB and open a terminal window and do "adb logcat" it should let you know where you are stuck in the boot. Post the log and someone here should be able to help you.
Also, get boot camp and/or Virtualbox going so you can use Odin, which requires Windows. If you mess something up, you can use Odin to get back to a stock setup. Sucks that it requires Windows, but that's just how it is for now.

Oppps mis-read this phone is complete black no noise just heat

Moved your thread to general section.

Had the same problem when I tried to install that FixLag update.zip. Lucky for me, I did an Anroid Backup before I attempt it.
Hold down Vol+ & Vol- and power it up, do a Wipe.. when its done, restart your phone. When its booting up, its gonna act the same without the Tmobile Flash and still missing the Samsung Galaxy S logo. Just wait for your phone to VIBRATE. Then your phone should be working. I dont know what happen in that update.zip but it deleted the Graphic at the beginning when you first boot up your phone. After that I went back and did a Recovery and got everything back too normal.

kiddiosky said:
Had the same problem when I tried to install that FixLag update.zip. Lucky for me, I did an Anroid Backup before I attempt it.
Hold down Vol+ & Vol- and power it up, do a Wipe.. when its done, restart your phone. When its booting up, its gonna act the same without the Tmobile Flash and still missing the Samsung Galaxy S logo. Just wait for your phone to VIBRATE. Then your phone should be working. I dont know what happen in that update.zip but it deleted the Graphic at the beginning when you first boot up your phone. After that I went back and did a Recovery and got everything back too normal.
Click to expand...
Click to collapse
It worked!! Thank you so much! I am back up and running. No boot screens, however funtional and root maintained. Is there a way to recover the boot screens?

I was just searching through the forums for the answer to the last post in this thread - "is there a way to reinstall the boot animation? Well, is there? Mind, I DO NOT want the horrible tmo portion, just the S.
Thought?

Droidicus said:
I was just searching through the forums for the answer to the last post in this thread - "is there a way to reinstall the boot animation? Well, is there? Mind, I DO NOT want the horrible tmo portion, just the S.
Thought?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showpost.php?p=7663822&postcount=38

I just did this to my phone like the ones stated above..... Blank screen then vibrate and im in the Android OS and it changed the Audio but still no graphics....... Kinda disapointing but until someone finds hwo to actually finx this I'm stuck.

[Q] Blank Screen

So I just rooted my device and then tried to install a lag fix... when I rebooted my phone after the script, I heard the T-Mobile jingle and then it came to a blank screen. When I pressed the power button there was no response. If I press any of the white keys at the bottom, they just light up. I CAN turn my phone off and go into recovery mode.
This thing has kind of shaken me up so I am willing to go back to an unrooted phone.
PLEASE HELP!

Nandroid, my friend.
Since you are able to boot into recovery, do a nandroid restore.
If you do not have your own nandroid backup There is a thread in the Dev forum you can dowload one from. Just search "[ROM] OFFICIAL T-Mo Vibrant JFD ODIN/Nandroid Backup Images 7/29/10 (Tested/Working)" (I can't hotlink yet. sorry)
This is all assuming you have installed clockwork recovery, which you should have done before you attempted any modding of any sort. Also always remember to create a nandroid of your current system before trying something that is still in beta.

i got same problem here and a don't have clockwork recovery :-(

Then you have to use odin if you don't have clockwork...
My phones have been flashed more than Girls Gone Wild..
[email protected]

I think I found a fix that works...
I just went to recovery mode, and deleted all user data.
I then rebooted and still had a blank screen for about 10 seconds, and then my lock screen came up.
Worked for me! Thanks everyone.

nearblack said:
So I just rooted my device and then tried to install a lag fix... when I rebooted my phone after the script, I heard the T-Mobile jingle and then it came to a blank screen. When I pressed the power button there was no response. If I press any of the white keys at the bottom, they just light up. I CAN turn my phone off and go into recovery mode.
This thing has kind of shaken me up so I am willing to go back to an unrooted phone.
PLEASE HELP!
Click to expand...
Click to collapse
Sorry to resurrect old posts, but I would like to know If after rooting and lag fixing it, it didn't show ABSOLUTELY NOTHING on boot screen and you were only able to hear the sounds and the buttons lit up...
I have a Vibrant on this situation and would like to know I this procedure can fix it.
Best Regards.

Just wait 10 mins if nothing do a battery pull...boot...wait another 10. It will boot after that. Had same issue on two vibrants.
Sent from my SGH-T959 using XDA App

Happendd to me. Just let it sit there. It'll boot.
Sent from my SGH-T959 using XDA App

This happen to me I tired volume up+down+ power nothing happen...... here's what I found...Unplug ur battery n plug it back in with ur usb n when it turns on use adb on ur computer..... adb reboot recovery n do a data wipe
Hope this helps
Sent from my SGH-T959 using XDA App

Thanks for your answers, will try them all and report results.
Best Regards.

Can't boot, tried flashtool, not going well, help

So heres my issue, ATT G2. Installed clean rom xe 1.1 then was dumb and used titanium to restore my app data, not system, just app. but someone that caused a system ui to keep crashing, so I got into recovery mode by holding down and power button (white screen that asks to reset to factory). Did that and it booted to TWRP ran a script and then went back to LG screen and then blank screen with flashing led and that's where it stayed, won't go any further.
I've put it in download mode now and am using LG flash tool but when I plug the phone in the box for COM41 in the flash tool just says waiting for connection and thats it. then when I unplug it it says failed, obviously. Is my phone a brick or can it be saved?

I think it's getting a model information check fail in lg flashtool, ugh this sucks.

bova80 said:
So heres my issue, ATT G2. Installed clean rom xe 1.1 then was dumb and used titanium to restore my app data, not system, just app. but someone that caused a system ui to keep crashing, so I got into recovery mode by holding down and power button (white screen that asks to reset to factory). Did that and it booted to TWRP ran a script and then went back to LG screen and then blank screen with flashing led and that's where it stayed, won't go any further.
I've put it in download mode now and am using LG flash tool but when I plug the phone in the box for COM41 in the flash tool just says waiting for connection and thats it. then when I unplug it it says failed, obviously. Is my phone a brick or can it be saved?
Click to expand...
Click to collapse
LOL, i just went through the same thing. I'll be posting a fix tonight I worked out with Scott.
"There is a "back door" method. This is why they updated TWRP by the way...
Download this: https://dl.dropboxusercontent.com/u/...with cmd.zip
Extract it to desktop. open the command.bat file.
Type "adb reboot recovery" then press enter. You need to keep doing this during the factory reset.
This assumes you have drivers installed. If you have no drivers installed for recovery mode then just select generic Google Nexus ADB drivers.
You kinda have to hammer the reboot recovery command. Its all timing... To hammer it... press the up arrow in the dos prompt and that will repeat the line. then press enter.
Keep doing it until you see it reboot to twrp and you should be able to sideload or load from storage.
It may take 10 or 15 minutes to get the exact right timing so dont give up.
And of course, this is all dependent upon you having the drivers already installed."
- Scott
For timing, you'll need to wait right when TWRP starts writing the script and start hammering it out. Timing is everything so when you see the TWRP screen starting hitting the up cursor and enter. It should load recovery. Don't bother using the tool, it won't work as it thinks your device is a D802 and won't be compatible with the dll. This will get you back to normal and from here you can just wipe and reinstall the rom again fresh with out losing media/data on the your drive.

I tried to download the file since I am in the same boat, but the dropbox is giving errors... Could you please repost the link to get the file? It would be greatly appreciated

MkV05 said:
I tried to download the file since I am in the same boat, but the dropbox is giving errors... Could you please repost the link to get the file? It would be greatly appreciated
Click to expand...
Click to collapse
When I get home to my personal desktop I'll be able to upload the link again. It's not my drop box but I have the files to upload to drop box and repost.

SamsungGalaxyStig said:
When I get home to my personal desktop I'll be able to upload the link again. It's not my drop box but I have the files to upload to drop box and repost.
Click to expand...
Click to collapse
Awesome, been waiting for this! Just to confirm, will the same file work for someone with a Verizon G2 who's having the same problem?

ccmbr002 said:
Awesome, been waiting for this! Just to confirm, will the same file work for someone with a Verizon G2 who's having the same problem?
Click to expand...
Click to collapse
I haven't tested it on VZW unfortunately. Check with scrosler. However, I assume it should be similar if not the same, but don't quote me on that.
Updated Link guys: https://www.dropbox.com/s/qsjwguwtlyczwdh/adb with cmd.zip

so I got it right when it said teamwin to reboot but everytime it reboot it tried to run the script and would never actually go into twrp. att is sending me a new phone but I'm worried when I send this one back they'll get me for being rooted.

SamsungGalaxyStig said:
I haven't tested it on VZW unfortunately. Check with scrosler. However, I assume it should be similar if not the same, but don't quote me on that.
Updated Link guys: https://www.dropbox.com/s/qsjwguwtlyczwdh/adb with cmd.zip
Click to expand...
Click to collapse
I just messaged him to double check - I don't have access to my phone for a few days (out of town) but if he hasn't responded by the time I get home I'll just go ahead and try it and post here if it works or not. Thanks again for sharing this file!

Got the file... and MANY THANKS!!! It allowed me to un-softbrick my G2 finally

this just isn't working for me, so hard to get it to get that command and when I do it still just reboots to the wiping partition script and reboots again. Think I'm screwed. Anything I can do in download mode or any other commands I can send? @SamsungGalaxyStig
video clip of what is happening
http://youtu.be/8U_mgYYxIpQ
here is what the script says
updating partition details
Running boot script....
Finished running bootscript,
Processing AOSP recovery commands....
----Wiping Data Partition----
Wiping data without data/media...
Done.
Removing all files under '/cache'
---- data partition wipe complete!
Done processing script file
Click to expand...
Click to collapse

bova80 said:
this just isn't working for me, so hard to get it to get that command and when I do it still just reboots to the wiping partition script and reboots again. Think I'm screwed. Anything I can do in download mode or any other commands I can send? @SamsungGalaxyStig
video clip of what is happening
http://youtu.be/8U_mgYYxIpQ
here is what the script says
Click to expand...
Click to collapse
The minute you see the twrp screen pop up start hammering away at the adb command listed before. after you type it once, you can keep pressing the up cursor and it will just replicate the previous command. You are opening up the cmd in the adb folder right?

SamsungGalaxyStig said:
The minute you see the twrp screen pop up start hammering away at the adb command listed before. after you type it once, you can keep pressing the up cursor and it will just replicate the previous command. You are opening up the cmd in the adb folder right?
Click to expand...
Click to collapse
yeah just tried it again and as soon as I hit it it starts rebooting again goes to TeamWin screen and then runs the same script I posted before and when it is done it reboots and then goes to blank screen. I had just put the latest twrp on the day before too so I don't understand why it isn't booting to it.
My biggest thing is will ATT freak and send the phone back once they get it and go to download mode and see it says rooted or if they try the hard reset and see it goes to a TeamWin screen.
side note, if I can type adb shell and get it to prompt me there, is there anything I can try and type quickly to have it do anything else?

bova80 said:
yeah just tried it again and as soon as I hit it it starts rebooting again goes to TeamWin screen and then runs the same script I posted before and when it is done it reboots and then goes to blank screen. I had just put the latest twrp on the day before too so I don't understand why it isn't booting to it.
My biggest thing is will ATT freak and send the phone back once they get it and go to download mode and see it says rooted or if they try the hard reset and see it goes to a TeamWin screen.
side note, if I can type adb shell and get it to prompt me there, is there anything I can try and type quickly to have it do anything else?
Click to expand...
Click to collapse
Are you constantly doing the adb recovery reboot? or once or twice?

SamsungGalaxyStig said:
Are you constantly doing the adb recovery reboot? or once or twice?
Click to expand...
Click to collapse
I did it a bunch of times continuously and it would just keep rebooting. Am I supposed to just keep doing that for 10-15min straight? How will I know if it gets into recovery if it just keeps rebooting when ever I keep doing that?

bova80 said:
I did it a bunch of times continuously and it would just keep rebooting. Am I supposed to just keep doing that for 10-15min straight? How will I know if it gets into recovery if it just keeps rebooting when ever I keep doing that?
Click to expand...
Click to collapse
Keep doing it, watch your phone as it will eventually boot into recovery itself without running script.

SamsungGalaxyStig said:
Keep doing it, watch your phone as it will eventually boot into recovery itself without running script.
Click to expand...
Click to collapse
when I'm sending that command though it never actually runs the script, it just reboots.
I'll try this out when I get home, hopefully my fingers don't get tired, lol. How long did it take you?

bova80 said:
when I'm sending that command though it never actually runs the script, it just reboots.
I'll try this out when I get home, hopefully my fingers don't get tired, lol. How long did it take you?
Click to expand...
Click to collapse
like 5-10 min at most. it's literally timing. and based on what i saw on the youtube video you were having the exact same problem. btw, you have your drivers installed correctly right? you can check that under device manager. BTW, are you using a PC or mac?

SamsungGalaxyStig said:
like 5-10 min at most. it's literally timing. and based on what i saw on the youtube video you were having the exact same problem. btw, you have your drivers installed correctly right? you can check that under device manager. BTW, are you using a PC or mac?
Click to expand...
Click to collapse
on a pc. when i go under device manager I think it says something like lg modem, I'll know for sure when I get home.

omg it finally worked! thanks, I eventually just gave up with the command prompt and it went in.

OTA Bootloop Help

I have a Verizon LG G2 I tried to flash my backed up stock recovery with Flashify so I could flash the most recent OTA. After accepting the OTA update my phone restarted, tried to install the update, hung at a black screen but was still turned on. If I power it off and back on it shows the LG logo, some white text, then goes to the same black screen. What appears to be happening is that my backup recovery did not restore properly and it's hanging when it tries to go into recovery. It's almost like my recovery partition is blank.
I've tried to follow the instructions to flash back to stock, but I do not believe I'm actually able to get my phone into download mode. When it is plugged into my windows 7 computer with the LG drivers installed it shows up in device manager as QHSUSB_BULK.
Is there any way for me to push a stock recovery, or even a custom recovery to my phone so I can somehow salvage it, or am I permanently bricked?

toopty said:
I have a Verizon LG G2 I tried to flash my backed up stock recovery with Flashify so I could flash the most recent OTA. After accepting the OTA update my phone restarted, tried to install the update, hung at a black screen but was still turned on. If I power it off and back on it shows the LG logo, some white text, then goes to the same black screen. What appears to be happening is that my backup recovery did not restore properly and it's hanging when it tries to go into recovery. It's almost like my recovery partition is blank.
I've tried to follow the instructions to flash back to stock, but I do not believe I'm actually able to get my phone into download mode. When it is plugged into my windows 7 computer with the LG drivers installed it shows up in device manager as QHSUSB_BULK.
Is there any way for me to push a stock recovery, or even a custom recovery to my phone so I can somehow salvage it, or am I permanently bricked?
Click to expand...
Click to collapse
I have the same exact problem. exactly the same. mine doesnt even show up for download mode. this sucks!

cgillie92 said:
I have the same exact problem. exactly the same. mine doesnt even show up for download mode. this sucks!
Click to expand...
Click to collapse
I'm still trying to find a solution I will post here if i have any luck. I've dug through a lot of forum posts and I think what makes us unique is the fact that we have a corrupt or blank recovery partition.

toopty said:
I'm still trying to find a solution I will post here if i have any luck. I've dug through a lot of forum posts and I think what makes us unique is the fact that we have a corrupt or blank recovery partition.
Click to expand...
Click to collapse
Ive looked through a lot too. and its crazy how that would happen i made sure it was rebooting correctly before i took the ota and then when i did the ota bam! only screens i can get to come up are the hardware key control mode and the factory hard reset which both go to white screens after I do them both. every one else probably has not taken the ota.

cgillie92 said:
Ive looked through a lot too. and its crazy how that would happen i made sure it was rebooting correctly before i took the ota and then when i did the ota bam! only screens i can get to come up are the hardware key control mode and the factory hard reset which both go to white screens after I do them both. every one else probably has not taken the ota.
Click to expand...
Click to collapse
One difference in what mine is doing and what your phone is doing. I go to a solid black screen not a white screen. It's very hard to tell my phone is even turned on. I'm having to look if the back-light to verify if it's on or not. I can hold my power button for 10 seconds through one LG logo cycle and then it turns off.

toopty said:
One difference in what mine is doing and what your phone is doing. I go to a solid black screen not a white screen. It's very hard to tell my phone is even turned on. I'm having to look if the back-light to verify if it's on or not. I can hold my power button for 10 seconds through one LG logo cycle and then it turns off.
Click to expand...
Click to collapse
I hope someone helps us out. I really cant afford a new one because the warranty is void. I was going back to stock because of all of the little bugs that need to be ironed out in roms. cause kit kat is around the corner hopefully and my problem virtually is the same i might have had my brightness on auto or something prior to that.

Foolow this tutorial to get your phone back.
http://forum.xda-developers.com/showthread.php?p=48765620

Partager.info said:
Foolow this tutorial to get your phone back.
http://forum.xda-developers.com/showthread.php?p=48765620
Click to expand...
Click to collapse
Thanks for the link. I'm tryingto follow the instructions,but when I get to the step where i plug in my phone it just showes up as a bunch of failes partitions, and slows my ubuntu to a crawl. I'm a linux noob, is there a command i can run to stop this from happening? I also created a reply asking this question in the link you sent me.
Thanks for the help.

Partager.info said:
Foolow this tutorial to get your phone back.
http://forum.xda-developers.com/showthread.php?p=48765620
Click to expand...
Click to collapse
After following the instructions on the above link i was able to get fastboot status on my phone. It did not fully restore my phone however. I was able to flash twrp via fastboot. I was then able to boot into twrp and run the command at this link via twrp terminal http://forum.xda-developers.com/showthread.php?t=2451696
Thanks to everyone for all your help.

toopty said:
Thanks for the link. I'm tryingto follow the instructions,but when I get to the step where i plug in my phone it just showes up as a bunch of failes partitions, and slows my ubuntu to a crawl. I'm a linux noob, is there a command i can run to stop this from happening? I also created a reply asking this question in the link you sent me.
Thanks for the help.
Click to expand...
Click to collapse
How did you get past the ubuntu slowing down? I cant win for ubuntu freezing due to all of the failed partitions either so close but yet so far =/

cgillie92 said:
How did you get past the ubuntu slowing down? I cant win for ubuntu freezing due to all of the failed partitions either so close but yet so far =/
Click to expand...
Click to collapse
Ignore all the message, unplug you phone get ready to type the command, plug it in and immediately press enter to run the command. it took some trial and error, and i had to use this other post to help me out. I actually got fastboot working first, then used this post to http://forum.xda-developers.com/showthread.php?t=2477595 to get download mode working, and to flash twrp recovery. After that i used this post to run the command line from with twrp. http://forum.xda-developers.com/showthread.php?t=2451696 . I didn't have to flash the factory tot to my phone, but i have that option now because download mode is working. This process will work, there is hope for you getting your phone back. I'm fully recovered. I decided 12B is not worth it in the mean time, but if you want 12B you need to flash the factory tot and then upgrade. There is a way to root 12B, but as of this time you are unable to get Custom Recovery on it.

lg mobile support tool stuck at 49%

i tried going back to stock firmware using the method in general section but i always seem to get an error at 49%. can someone explain how to get passed this.
i using the t-mobile d801.
also my recovery seemed to have gotten erased because i cant boot into twrp anymore.

LG G2 Stuck @ 49%
El Killer said:
i tried going back to stock firmware using the method in general section but i always seem to get an error at 49%. can someone explain how to get passed this.
i using the t-mobile d801.
also my recovery seemed to have gotten erased because i cant boot into twrp anymore.
Click to expand...
Click to collapse
HEY! I'm on the d801 as well and I've been where you're at a number of times, unfortunately. But I've always gotten out. Here's the conclusion I've reached. Trying to flash directly back to stock without wiping all the partitions first is what makes the RDTool get stuck. It's like the phone runs out of memory and can't host a full Gig+ of data since your last ROM is in the way. Sorry if I'm wrong but I'm only assuming you didn't wipe everything except the Internal storage. The good thing every time this has happened to me is that your recovery partition should be intact. Mine always is, and we're on the same variant. Another thing, booting back into recovery is not impossible. It's all in the timing it takes from the first time you see the LG logo while holding volume - and the power button, but don't let go. What worked for me was to let the phone cycle between off and boot power states twice until the phone is completely off again. You may even notice the LED indicator flash red. Release your keys if the phone stays off and immediately hold the combo down again until the phone tries to boot again just don't let go of the buttons. Once it powers down again, leave the phone alone for a few minutes. Come back and this time get ready to boot into recovery. The combo button press will initiate boot but don't let go until the next time you see the LG logo flash, then quickly release and depress the vol down power up combo and hold. May take a minute longer than usual but the reset menu should pop up thereafter. Tap power 2 more times and you should back into recovery. It's worked every time for me. Let me know if you're good and whether this helped!
Good Luck,
tinydynamite00

try with x86
El Killer said:
i tried going back to stock firmware using the method in general section but i always seem to get an error at 49%. can someone explain how to get passed this.
i using the t-mobile d801.
also my recovery seemed to have gotten erased because i cant boot into twrp anymore.
Click to expand...
Click to collapse
i had exact same issue that progress stucked on 49%. if you are using 64bit OS, try to flash it with 32bit(x86) OS
good luck

tinydynamite00 said:
HEY! I'm on the d801 as well and I've been where you're at a number of times, unfortunately. But I've always gotten out. Here's the conclusion I've reached. Trying to flash directly back to stock without wiping all the partitions first is what makes the RDTool get stuck. It's like the phone runs out of memory and can't host a full Gig+ of data since your last ROM is in the way. Sorry if I'm wrong but I'm only assuming you didn't wipe everything except the Internal storage. The good thing every time this has happened to me is that your recovery partition should be intact. Mine always is, and we're on the same variant. Another thing, booting back into recovery is not impossible. It's all in the timing it takes from the first time you see the LG logo while holding volume - and the power button, but don't let go. What worked for me was to let the phone cycle between off and boot power states twice until the phone is completely off again. You may even notice the LED indicator flash red. Release your keys if the phone stays off and immediately hold the combo down again until the phone tries to boot again just don't let go of the buttons. Once it powers down again, leave the phone alone for a few minutes. Come back and this time get ready to boot into recovery. The combo button press will initiate boot but don't let go until the next time you see the LG logo flash, then quickly release and depress the vol down power up combo and hold. May take a minute longer than usual but the reset menu should pop up thereafter. Tap power 2 more times and you should back into recovery. It's worked every time for me. Let me know if you're good and whether this helped!
Good Luck,
tinydynamite00
Click to expand...
Click to collapse
still no luck

El Killer said:
still no luck
Click to expand...
Click to collapse
OK. So tell me, what ROM were you on, which recovery version and name are you using, why were you flashing back to stock, i.e. were you having problems, what kind. Explain as much as you can in detail. Need to retrace your exact steps to best get you fixed up!
tinydynamite00

tinydynamite00 said:
OK. So tell me, what ROM were you on, which recovery version and name are you using, why were you flashing back to stock, i.e. were you having problems, what kind. Explain as much as you can in detail. Need to retrace your exact steps to best get you fixed up!
tinydynamite00
Click to expand...
Click to collapse
i was using pa4.0 and wanted to go back to stock because i preffered the lg ui. i had twrp 2.6.3.5 i restored my back up of stock but when i rebooted i got into fastboot mode.
twrp wasnt working after i had restored my back up go straight to fastboot was stuck in fastboot until i found a thread explaining how to get out of fastboot and restore download mode.
managed to get download mode working and tried to flash stock with mobile support tool and got the 49 percent error,
my phone never really displayed any progress just says download mode with a white box and blue dots

El Killer said:
i was using pa4.0 and wanted to go back to stock because i preffered the lg ui. i had twrp 2.6.3.5 i restored my back up of stock but when i rebooted i got into fastboot mode.
twrp wasnt working after i had restored my back up go straight to fastboot was stuck in fastboot until i found a thread explaining how to get out of fastboot and restore download mode.
managed to get download mode working and tried to flash stock with mobile support tool and got the 49 percent error,
my phone never really displayed any progress just says download mode with a white box and blue dots
Click to expand...
Click to collapse
K, now if you're only seeing the blue dots when you attach by USB your phone to PC, then you're not fully in DL mode to process the kdz. You should see a white wheel in the center of the screen when you connect and a viewing mirror near the base of your phone with ROOTED in red directly below that. And you're sure your PC is detecting your phone? You've the drivers installed? Because when RDT tells you to run the tool, you'll see some binary code in the viewing window I spoke of, the white wheel will turn and below it will be shown the COM port to which you're connected and a solid thin red bar will begin to fill a space in the viewer showing you the progress.
Also, be sure when attempting the first steps I gave you to boot into recovery that you are not USB connected. It won't work.
And, try to remember if your phone was well enough charged, should have been at least 80% full. It happened to me once that I couldn't boot recovery and my phone would go to fastboot like yours until I left it alone to charge and then I repeated the stepsvi laid out to get back into recovery. This part is paramount!

Please READ CAREFULLY
I used to be in your same situation. I thought I had bricked my phone for good. I finally figured it out. Here is my solution from my Thread.
Esteef said:
Okay, after 12+ hours of trying every method possible on XDA I finally resolved my issue. I will update the first post just incase any others care or fall into the same dilemma I was in.
The LG Mobile Support tool would not download the firmware and it would NOT ask me for my IMEI to download it either.
So my solution....
***
Installed LG Mobile Support Tool then Installed the LG Drivers. (FROM HERE http://forum.xda-developers.com/showthread.php?t=2471370
BEFORE I connected the phone to the computer. I opened the LG Mobile support tool clicked (Options on the top right).
When the dropped down opened, I clicked the (Upgrade Recovery) option. THEN, is when the prompt opened to ask me what my IMEI is.
Before I entered my IMEI, I connected my phone to the computer in download mode, then proceeded to enter my IMEI and hit OK.
This is when the LG Mobile Support tool SUCCESSFULLY downloaded the latest official LG firmware and installed it.
*** BE AWARE, with the phone connected to the PC, the prompt NEVER appeared to enter my IMEI.
*** But with the phone disconnected, the prompt came up every time. This might be the trick for some people.
*** with the IMEI prompt opened, I then connected the phone , entered the IMEI, then hit OK. BOOM HERPES....
Well I'll polish this up more later. I hope this works for every LG G2 Variant and not just the T-Mobile one (D801)
-Esteef
Click to expand...
Click to collapse
THIS WILL WIPE YOUR PHONE COMPLETELY...

tinydynamite00 said:
K, now if you're only seeing the blue dots when you attach by USB your phone to PC, then you're not fully in DL mode to process the kdz. You should see a white wheel in the center of the screen when you connect and a viewing mirror near the base of your phone with ROOTED in red directly below that. And you're sure your PC is detecting your phone? You've the drivers installed? Because when RDT tells you to run the tool, you'll see some binary code in the viewing window I spoke of, the white wheel will turn and below it will be shown the COM port to which you're connected and a solid thin red bar will begin to fill a space in the viewer showing you the progress.
Also, be sure when attempting the first steps I gave you to boot into recovery that you are not USB connected. It won't work.
And, try to remember if your phone was well enough charged, should have been at least 80% full. It happened to me once that I couldn't boot recovery and my phone would go to fastboot like yours until I left it alone to charge and then I repeated the stepsvi laid out to get back into recovery. This part is paramount!
Click to expand...
Click to collapse
yeah my computer does recognize my phone. but i cant run adb or fastboot anymore. all drivers are installed also.
i never got the while wheel or any progress indicator. so i guees im not really in download mode.
i let my phone charge for a few hours and try your method again and let you know what happens

El Killer said:
yeah my computer does recognize my phone. but i cant run adb or fastboot anymore. all drivers are installed also.
i never got the while wheel or any progress indicator. so i guees im not really in download mode.
i let my phone charge for a few hours and try your method again and let you know what happens
Click to expand...
Click to collapse
Sounds good. A full charge can make all the difference. I learnt the hard way! One or more of us will be along should you need further help.
I do hope you get this sorted! I've come back from the brink too many times to not believe you won't.
tinydynamite00

Do as esteef recommended..
Sent from my LG-D802 using XDA Premium 4 mobile app

Falaco147 said:
Do as esteef recommended..
Sent from my LG-D802 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
im trying but i get a battery to low error. i guess i need to charge it longer

i owe you all a million thanks for helping me unbrick my phone. i really thought i was left with a paper weight and then i tried esteefs method again i really owe you guys thank you for the support

El Killer said:
i owe you all a million thanks for helping me unbrick my phone. i really thought i was left with a paper weight and then i tried esteefs method again i really owe you guys thank you for the support
Click to expand...
Click to collapse
You are welcome... The first time I did it too my battery was at 28% and I panicked since I got the low battery error.
I could of sworn that my phone officially became a paper weight. My heart dropped.
I'm glad you are up and running with the rest of us!
-Esteef

1732359994
hey !
I have the same problem, but... I can't acces to the recovery :/ i tried to install CWM (with Freegee) over Team win recovery and... boot loop :
The rom 4.2.2 flex was gone, no boot animation
-When i pres volum down + power, i have the reset menu, but after that, there is a black screen and it's written at the top left "started usb_start Fastboot Mode ()"
Please, i need your help, i'm so afraid !!
Thx !

Esteef said:
I used to be in your same situation. I thought I had bricked my phone for good. I finally figured it out. Here is my solution from my Thread.
THIS WILL WIPE YOUR PHONE COMPLETELY...
Click to expand...
Click to collapse
I know this thread is a bit old, but it saved my butt. Your method worked perfectly. Thank you for this post.

My LG F460 was bricked (error 570), only download mode was working. Esteef method works fine even my pictures and programs was saved. Thanks!