[Q] LG g2 D802 stuck on Bootloop help please ! - G2 Q&A, Help & Troubleshooting

Hi Guys,
i am in a big trouble after trying to downgrade my LG G2 D802 from official 4.4.2 down to 4.2.2 following the revert back to stock.
Its on a constant boot loop and i cannot even turn the phone off. its been going on for like 1 hour and i have no idea what i have to do
Help please !!

rugbi82 said:
Hi Guys,
i am in a big trouble after trying to downgrade my LG G2 D802 from official 4.4.2 down to 4.2.2 following the revert back to stock.
Its on a constant boot loop and i cannot even turn the phone off. its been going on for like 1 hour and i have no idea what i have to do
Help please !!
Click to expand...
Click to collapse
1.Plug the USB in and connect it to a pc that has the LG G2 drivers installed.
2.Hold the power button and volume Up simultaneously until you boot into download mode.
Report back if you're successful in those two steps and I'll guide you through the rest.

MK45A said:
1.Plug the USB in and connect it to a pc that has the LG G2 drivers installed.
2.Hold the power button and volume Up simultaneously until you boot into download mode.
Report back if you're successful in those two steps and I'll guide you through the rest.
Click to expand...
Click to collapse
Hi,
I have the same problem. I can enter in dowload mode, what can i do now ?

iliasse said:
Hi,
I have the same problem. I can enter in dowload mode, what can i do now ?
Click to expand...
Click to collapse
If FlashTool doesn't recognize your phone or just fails to flash the .TOT file, follow these steps carefully.
1. In Windows 7, go to start, right click Computer and choose 'Manager'------Windows 8? right click the Windows logo at the bottom left corner and choose 'Device Manager'
2. Assuming your D802 is in download mode and connected to the pc by USB, open 'Ports (COM & LPT)' and you should see
'LGE AndroidNet USB serial port(COMX)'
3.Right click on 'LGE AndroidNet USB serial port(COMX)' and go to 'properties'
4. Click on the 'Port Settings' tab and click 'advanced'. Another window will pop up, here, choose 'COM Port Number' from COMX to 'COM41' and click OK and OK again.
It should now look like this
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
5. Install LG G2 Drivers: https://app.box.com/s/hkcnfuuyno8bymurbak0
6. Instal LG FlashTool: https://app.box.com/s/h39upgmtvgzvjrp52clt
7. Once you've installed the FlashTool, right click it and click on 'Open File Location'. Replace the MegaLock.DLL with this one: https://app.box.com/s/97r8r6cpl7qhq3p5vhwi
8: Choose and download a .TOT file only! Do not download and use a .KDZ, it will not work! : http://storagecow.eu/index.php?dir=Xda/LG+G2/Stock/
9. Download this .DLL file: https://app.box.com/s/v9hmityntrc275js5ran
10. Put the downloaded .DLL and .TOT files in the Desktop.
11. Run LG FlashTool as Admin
12. Choose the .DLL and .TOT and click OK
14. Connect your D802 and then click on the arrow on the top left corner of the FlashTool. Wait until it shows 'Ready'
15. When FlashTool shows 'Ready' disconnect and then connect your D802.
16. It should now start flashing. Wait until FlashTool shows 100% and your phone will come back to life.
Report back if it worked.

It worked.
You are one awesome dude MK45A.
My phone is working again THANKS.

So, I have the same problem. Should I connect the phone in download mode or some other mode?

my phone got bootlop after download OTA LS980ZV7_01_TO_ZV8_13
what can i do??

Related

[Q] Bricked D802, Any help?

Hello, I'm new to this forum, and like every newbie, I'm asking for help.
My problem is this:
I bought a LG G2 D802 32GB, it was rooted and with CMW. I intalled LG Mobile Support Tool and it appeared that there was a new firmware (apparently 80220C) so I installed with that software, but when it finished, the phone restarted and got stuck on the LG logo. The only thing I could do was to get into Fastboot mode and from this post: http://forum.xda-developers.com/showthread.php?t=2477595 I managed to get into the Download mode (That one with the Firmware Update message: btw it appears: "USER B100 ROOTED"), the thing was that I didn't know which exact version of 80220B had my phone, so instead of getting the laf.img mentioned in the thread (the one of cms88168 was 80210B), I used one named: "Europe OPEN D80220B_00". In that way I managed to access Download mode. I then proceeded to use LG Flash Tool 1.8 (Used first 2014 without sucess) both from: http://forum.xda-developers.com/showthread.php?t=2432476 and this message appears:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
BTW, I used DLL: LGD802_20130912_LGFLASHv160.dll
And the rom I extracted the laf.img was a KDZ (Europe OPEN D80220B_00.kdz), the one I try to install with the LG Flash Tool is a TOT (BIN_LGD802AT-00-V10b-SEA-XX-SEP-04-2013-32G+0.tot)
Please, if someone can help me to fix my phone (I've only had it for 10 days, no way to return it), please.
Thanks in advance and cheers.
UPDATE: I used the DLL from the KDZ file and the same TOT and the LG Flash Tool (v1.8) reached a higher status in the update but failed with this message:
And now it gets stuck in the "Download Mode" screen and in Device Manager theres is no track of the phone.
I don't really know what to do.
Why don't you try with kdz ?
Here
+ you took the ota or ?
Hi, thanks for replying.
All this happened because I updated it connected to my PC.
I tried that and it throws this error: "Problem with communication between cell phone and PC"
The phone won't enter in download mode and when I turn it on, stuck at logo and connect it to PC, it appears like this: "LG AndroidNet USB Serial Port (COM41)" -41 set by me.
Is there a way to access the phone through COM to restore partitions?
No adb or fastboot working.
What can I do?
Hello, I want to update the info about this post:
I definitively had to return the phone for refund.
Now I own a Z2, it's a great phone, although the G2 is a great phone too.
If possible, please close this thread.
Cheers.

Verizon G2 Bricked! Demigod Crash Handler! No Nothing!

I was going back to stock using the KDZ method and USB cable came unplugged during the process. It gets the secure boot error and is stuck in the DemiGod Crash Handler. Computer only recognizes the COM and Modem. NO ADB, FASTBOOT, DOWNLOAD MODE, RECOVERY, SAFE MODE, NO NOTHING. Anyone have the same thing happen?
NBreunig3 said:
I was going back to stock using the KDZ method and USB cable came unplugged during the process. It gets the secure boot error and is stuck in the DemiGod Crash Handler. Computer only recognizes the COM and Modem. NO ADB, FASTBOOT, DOWNLOAD MODE, RECOVERY, SAFE MODE, NO NOTHING. Anyone have the same thing happen?
Click to expand...
Click to collapse
This exact thing happend to me yesturday ... Freaking DemiGod Crash Handler Error mesg on screen !! if u find the solution please do let me know as well
maxpain007 said:
This exact thing happend to me yesturday ... Freaking DemiGod Crash Handler Error mesg on screen !! if u find the solution please do let me know as well
Click to expand...
Click to collapse
Plug into your computer via usb. Open device manager. If you see qhsusb_bulk then follow this guide to fix. Unfortunately I didn't get that therefore there is no fix...However I was very grateful because Verizon let me get an early upgrade. I now have a G3.
DemiGod cras handler: critical error
Good day, if flash bootloader changer on my lg g2 verizon on cloudy3.3...
this is what i got at the end of the day. Is their a way out please help me out. What do i need to do to make my phone come up again because it will not boot saying somthing like....
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
please help
Well bro I was stuck with the same issue..
This happens to me when i flashed a wrong twrp recovery for lg g2 d801 and it was stuck in critical error i was also unable to access download mode ..
But my Good luck was that i recovered it by doing silly thing ?
So i do following things. But make sure u know the corrert version of your lg g2 to flash kdz file with lg flash tool and also must have lg drivers intalled.
Steps to perform.
1. While in critical error screen you have an option to press volume up button to boot into download mode( although it will not boot to download mode) but still press volume up button so your Pc can detect your phone.
2. Now flash a kdz file of your lg g2 with flash tool. ( you can google for it to download flash file for your lg g2 and how to flash it with lg flass tool.)
3. When you will try to flash it will fail..
4. Now power off your phone by pressing power button.
5. Now boot to download mode and flash the correct kdz with lg flash tool and u r good to go..
To acess download mode power off your phone immediately press volume up button and while keep pressing it and plug in usb cable and you will be in download mode

My g2 stuck at fastboot mode

Hi all,
I'm really desperate because my LG stuck in a boot loop and it can only get in the download mode.
I've read the thread about using fastboot command to restore to stock but my condition seems to be a little bit difference
First
i've got these command while plug my phone in
[860]fastboot mode started
[1070]-reset-
[1080]-portchange-
[1150] fastbootrocessing commands
Normally there would be a [910]udc_start() in the second line but i don't have it
Second
my command such as fastboot reboot or fastboot erase all stuck. When i unplug the usb cable it appear the too many link line like this
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Is there any other way for me to return to stock or i can't use my phone anymore?
Note: i've tried to change the usb cable, usb port and even another computer and all of them stuck at the command line.
lordgon said:
Hi all,
I'm really desperate because my LG stuck in a boot loop and it can only get in the download mode.
I've read the thread about using fastboot command to restore to stock but my condition seems to be a little bit difference
First
i've got these command while plug my phone in
[860]fastboot mode started
[1070]-reset-
[1080]-portchange-
[1150] fastbootrocessing commands
Normally there would be a [910]udc_start() in the second line but i don't have it
Second
my command such as fastboot reboot or fastboot erase all stuck. When i unplug the usb cable it appear the too many link line like this
Is there any other way for me to return to stock or i can't use my phone anymore?
Note: i've tried to change the usb cable, usb port and even another computer and all of them stuck at the command line.
Click to expand...
Click to collapse
Try Skt tool and fix fastboot.
xmayhemreturnsx said:
Try Skt tool and fix fastboot.
Click to expand...
Click to collapse
can you be more specific about what i have to do , i really don't understand.
Guys, please help me :crying:. I feel so hopeless
lordgon said:
can you be more specific about what i have to do , i really don't understand.
Guys, please help me :crying:. I feel so hopeless
Click to expand...
Click to collapse
I'm sorry but I meant to say Srk Tool. you can find it here http://forum.xda-developers.com/lg-g2/development/tools-srk-tool-useful-toos-lg-root-twrp-t3079076 . Once you download the tool open it up and go to fixed utility (4) and then press fix fastboot.
xmayhemreturnsx said:
I'm sorry but I meant to say Srk Tool. you can find it here http://forum.xda-developers.com/lg-g2/development/tools-srk-tool-useful-toos-lg-root-twrp-t3079076 . Once you download the tool open it up and go to fixed utility (4) and then press fix fastboot.
Click to expand...
Click to collapse
Thank you so much. May i asked if its worked for an lg without usb debugging ( i stuck in the bootloop so i can not enable it) and i havent rooted my device yet?
lordgon said:
Thank you so much. May i asked if its worked for an lg without usb debugging ( i stuck in the bootloop so i can not enable it) and i havent rooted my device yet?
Click to expand...
Click to collapse
It should work just fine.

G2 F320 bricked phone, help!

Hey guys. Today i've bought LG G2 F320L korean mode. So i was happy because it was cloudy 3.3 already installed but...after reboot i see green logo Apps Watchdog Bite! I can't enter download mode, my pc can't recognize my device and i can't enter the recovery tho... Any ideas to help me unbrick my LG G2 ? I hear something about flash stock .bin files which i have on my pc but no idea how to do it when my pc can't find my device.. help
After ordinary reboot ? No wipe ?
@bender_007 mate i can't do anything. i just bought it when cloudy 3.3 was installed. now as i said i cant enter into recovery, download mode and it isnt recognized by pc. + this green apps watchdog bite...
god damn, any ideas?
Can you take a picture? Green dog..?
Poslano sa mog LG-D855 koristeći Tapatalk
To be honest i cant do at the moment using Nokia Asha 303 so this camera is horrible but i can tell you what exactly it says.
Apps Watchdog Bite!
DemiGod Crash Handler : Apps Watchdog Bite!
Press key to choose Dload Mode or Reboot
1) Volume Up: Dload mode
2) Volume down : reboot
If you choose Dload mode please do following action
1) Dload Mode, please connect usb
2) get the ram dumb image using QPST Configuration
Board info:
rev, 1.1 speed.pvs : 1,2 serial : 003455520e08aba8
if it something tells you it would be cool. i tried to go download mode but after it says "entering download mode" its something like lag and i cant do anything. Also tried combo (on turned off phone) power+vol up so korean lang appeared. Sorry for my bad english, hope u understand what i told.
And btw wondering how prev owner just installed Cloudy 3.3.. cuz he had same problem with this kind of brick, but he didnt answer me
edit; now i can be in mode in what i can't see anything on my lg screen ( pure black) and if i plug in my usb cable i see mass of partitions along with " switch off qhsusb_bulk" what to do ?
Qhusb bulk - refer to 'lg g2 fix no download mode, no recovery' and use SRK TOOL by somboons
Poslano sa mog LG-D855 koristeći Tapatalk
Hey guys. still got problem. It was flashed succesfully (SRK tool to fix dload mode + .tot files) had 4.2.2 android but sometimes it was rebooting and catching bootloop and sometimes it booted succesfully. Tried to fix it by LG support mobile tool, and it was closed to finish repair my firmware but when it rebooted into download mode (progress was like 13% it went into qhsusb bulk so it was interrupted. Now when i boot my g2 i see in right corner small letters like error security boot then it goes to white window ->
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
no download mode (can't even see it cuz whatever i do is this white window), no recovery, no qhsusb bulk. sometimes when i plug in usb between pc and my g2 i hear plugin sound. and in device manager is something like LGE android COM4 ? something like this...
Is it any other way instead of http://forum.xda-developers.com/lg-g2/general/lg-g2-unbrickable-fix-real-hard-brick-t2904404 ? my model is F320 but guide is about Dxxx. Guys really help me, seems like its bricked forever

Download mode bug

Hello,
My LG G3 (D855 16go) is hard bricked.
I have the qualcomm 9008 Usb connection and I have flashed correctly, following the topic (http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359)
When I flash sbl1 at the end, I try to get in download mode .
I see the screen download mode during 2 sec, and then black screen and I get back the qualcomm 9008 USB connection.
I have tried many times to flash (V10 tot or V20), but I don't know what to do.
Could someone give me a solution, please?
PS: I have tried LGUP ,but I have model unkown and i cannot select
PS2:With flashtool, I put the port 41 and when I want to flash i got the Download FAIL!!, Model Information Check Fail (with PID:NULL,IMEI:NULL,Model(nothing),DLL : D855
PS3:with Flashtool 2014,I get stuck at 4%(Upgrading S/W)
I have spent some many hours reading topics in xda or googling but I am stuck. So please help if you have an idea
Thanks,
bonilla said:
Hello,
PS: I have tried LGUP ,but I have model unkown and i cannot select
PS3:with Flashtool 2014,I get stuck at 4%(Upgrading S/W)
I have spent some many hours reading topics in xda or googling but I am stuck. So please help if you have an idea
Thanks,
Click to expand...
Click to collapse
PS : Try with unplug and plug again USB cable.
PS3 : change DIAG with CS Emergency (do with your own risk) if you are give up.
PS2 : never tried.
I used to have a LG P970, and i unbricked it with LG flash tool. it also get stuck at 4%, as long as it keeps printing out log. after that, the phone is unbricked.
dunno it works with lg g3. hope this help.
Never_Sm1le said:
I used to have a LG P970, and i unbricked it with LG flash tool. it also get stuck at 4%, as long as it keeps printing out log. after that, the phone is unbricked.
dunno it works with lg g3. hope this help.
Click to expand...
Click to collapse
I got this message and i don't have more logs :
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
fOxunO said:
PS : Try with unplug and plug again USB cable.
PS3 : change DIAG with CS Emergency (do with your own risk) if you are give up.
PS2 : never tried.
Click to expand...
Click to collapse
I tried the PS3 (change with CS Emergency) and it is the same, stuck at 4% with the same screenshot than above.
When I try to power on , I have the DemiGod Crash Handler , and when I press bottom up to go to download mode, I have the message on my phone :'Volume up is pressed Jump to dload Mode' and in some cases I have a blue led or sometimes i got a green led.
When I press volume down, it reboots and i got the same...
bonilla said:
I got this message and i don't have more logs :
Click to expand...
Click to collapse
You got this after click connection to server failed ?
Don't click the pop up , slid it to see what happened.
ops, you got 'Volume up is pressed Jump to dload Mode' , do you got DL mode before flashed ?
fOxunO said:
You got this after click connection to server failed ?
Don't click the pop up , slid it to see what happened.
ops, you got 'Volume up is pressed Jump to dload Mode' , do you got DL mode before flashed ?
Click to expand...
Click to collapse
When i power on , I got the Demigod Crash Handler
I press up to go to Dload Mode.
Then, I launch FlashTool 2014, I select the kdz and everything and then, it goes to 4%
and without pressing, I have this screen poping :
and even if I touch nothing, it doesnt change anything (In my phone , I have the demigod on the screen)
For information, I got this USB connection
Other question:
When I reflash with boardiag , each time when i finish with sbl1, i poweroff /poweron (botom up pressed) and I cannot access download mode, it goes black and I have the qualcomm 9008 usb port.
Could someone helps me with that problem ?
Thanks

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