Can't Boot to Download Mode LG G6 H870DS - LG G6 Questions and Answers

When I try to go into download mode it goes to fastboot mode where it shows how to unlock the bootloader. I tried it also using adb command but it still doesn't boot up to download mode. Can anyone help?? I really want to upgrade this to pie. Edit // I have updated my g6. I don't if it worked because I let it the battery go below 5% to stop the automatic boot up or I just did it with the cable. I am using a magnetic cable so I didn't get out the one the goes through the charging port. So if you are using one, unplug the component that is inside the port then plug it with the cable when doing the procedure.

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[Q] Lots of unusual problems

Hi guys! I am having problems with my phone. I am now running on cm 10 and the problems are: boot image crashed, cant boot into cwm recovery, always boot loop, cant get into download mode, and cant detect sim card. Any solutions?? Thanks
Shao Merng said:
Hi guys! I am having problems with my phone. I am now running on cm 10 and the problems are: boot image crashed, cant boot into cwm recovery, always boot loop, cant get into download mode, and cant detect sim card. Any solutions?? Thanks
Click to expand...
Click to collapse
Can you get it into battery charging mode ?
If you can get there, KDZ software will switch it to Download Mode when you attempt to flash firmware.
I am not sure as my boot animation is damaged no matter what mode I boot into. The problems began when I flashed a v20 baseband
Sent from my LG-E610 using XDA Free mobile app
radio image which is initialized before kernel is damaged
it doesnt interefere with bl or download mode however
- unplug usb cable.
- remove battery.
- hold vol - pressed.
- while doing so, connect usb cable.
- does it get into download mode ?
or try
- unplug usb cable.
- remove battery.
- hold vol - and + pressed.
- while doing so connect usb cable.
- does it get into download mode ?
let me know if either of those does anything.
If any of those work and kdz flash doesn't fix there's still hope, let me know how it goes, you might need a modified firmware dll aswell.
Good luck
freeusername said:
- unplug usb cable.
- remove battery.
- hold vol - pressed.
- while doing so, connect usb cable.
- does it get into download mode ?
or try
- unplug usb cable.
- remove battery.
- hold vol - and + pressed.
- while doing so connect usb cable.
- does it get into download mode ?
let me know if either of those does anything.
If any of those work and kdz flash doesn't fix there's still hope, let me know how it goes, you might need a modified firmware dll aswell.
Good luck
Click to expand...
Click to collapse
nope...tried both. doesnt work...

[Q] I'm SO LOST PLEASE HELP!

I own an LG G2, i recently got this phone yesterday from a person on craiglist. Don't worry i didn't pay him i gave him my older phone i dont use anymore. SO This phone is practically stuck in Firmware Update (As i read that post) , i spent about a day and half figuring it out and what happens is that.
I CAN get into recovery its TWRP v2.7.0.0 by Turning off the phone first and then Holding Vol UP, Power, Vol Down at the same time until the LG Logo comes up and then i am still holding them down, and it says Recovery Mode please wait and bam TWRP.
But heres the problem i can't mount my OTG and i can't ADB Sideload. So what do i do from here?? this guy rooted this phone and soft bricked it i think? and he wiped the phone but i also did when i had the chance and wiped it completly via recovery.
The only way i got into "Download Mode" / "Firmware Update" was to take the back cover off and unscrew a few screws on the side and unclip the battery for a few seconds and then plugged it back in and then I held the VOl UP button and plugged my USB into the phone and the other end is in my PC. My phone says "Download Mode please wait" and then prompted with the Firmware Update screen. BUT my pc doesnt detect the phone whatso ever and i've already installed drivers and etc from this forum ( http://forum.xda-developers.com/showthread.php?t=2432476 ) its the 2015 method that i downloaded.
so what do i have to do, i havent tried using different usb cables, the port seems fine to be plugged in since in TWRP it says 84+ so i meant its charging right? help me out guys idk what else to do or flash or anything.
IAmTechFreq said:
I own an LG G2, i recently got this phone yesterday from a person on craiglist. Don't worry i didn't pay him i gave him my older phone i dont use anymore. SO This phone is practically stuck in Firmware Update (As i read that post) , i spent about a day and half figuring it out and what happens is that.
I CAN get into recovery its TWRP v2.7.0.0 by Turning off the phone first and then Holding Vol UP, Power, Vol Down at the same time until the LG Logo comes up and then i am still holding them down, and it says Recovery Mode please wait and bam TWRP.
But heres the problem i can't mount my OTG and i can't ADB Sideload. So what do i do from here?? this guy rooted this phone and soft bricked it i think? and he wiped the phone but i also did when i had the chance and wiped it completly via recovery.
The only way i got into "Download Mode" / "Firmware Update" was to take the back cover off and unscrew a few screws on the side and unclip the battery for a few seconds and then plugged it back in and then I held the VOl UP button and plugged my USB into the phone and the other end is in my PC. My phone says "Download Mode please wait" and then prompted with the Firmware Update screen. BUT my pc doesnt detect the phone whatso ever and i've already installed drivers and etc from this forum ( http://forum.xda-developers.com/showthread.php?t=2432476 ) its the 2015 method that i downloaded.
so what do i have to do, i havent tried using different usb cables, the port seems fine to be plugged in since in TWRP it says 84+ so i meant its charging right? help me out guys idk what else to do or flash or anything.
Click to expand...
Click to collapse
I think the methods leave out that you need to change your phone to com port 41 on device manager > ports in order to be detected. Then you need to unplug it and reconnect to computer when the program shows waiting for device, with the phone in download mode already.
Also, to get to recovery you hold vol down and power, when the LG logo comes up release power and hold it again until the reset screen comes up.
To get to download mode you turn the phone off then hold up while plugging the USB cord in with it connected to pc... This launches download mode.
Sent from my LG-VS980 using XDA Free mobile app
Yoinx said:
I think the methods leave out that you need to change your phone to com port 41 on device manager > ports in order to be detected. Then you need to unplug it and reconnect to computer when the program shows waiting for device, with the phone in download mode already.
Also, to get to recovery you hold vol down and power, when the LG logo comes up release power and hold it again until the reset screen comes up.
To get to download mode you turn the phone off then hold up while plugging the USB cord in with it connected to pc... This launches download mode.
Sent from my LG-VS980 using XDA Free mobile app
Click to expand...
Click to collapse
Well you see man , I cant change anything in Device Manager since my phone isn't being detected. It didn't install drivers fully fully since my phone isnt recognized. Even in TWRP or "Download Mode/ Firmware Update" Nothing happens no drivers installing or anything even but it does boot it up to that point....and its just normal boot up i see the LG logo and my led goes from green to blueish in a smooth transition and it doesnt stop until i turn it off. The method i got into recovery is holding all those buttons down its not a problem for me to get into it. I also have another problem it doesn't seem to want to mount my usb otg by samsung.
what do i do
So i tried the otg route but I can't mount it. I have everything connected and once I go into recovery to mount usb-otg, nothing happens.
I just need some way to get a ROM.zip in my phone
Computer does not recognize my phone.
Stuck at LG logo unless I enter recovery.
Sideload doesnt work.
OTG doesnt work.
I've tried at least 4 different guides with no luck.
Why don't you manually install drivers from online?
ive tried
tzzeri said:
Why don't you manually install drivers from online?
Click to expand...
Click to collapse
ive tried that already and it doesnt list anything from the LG folder.
I realized the phone will say start the adb sideload feature. so, when i put the "abd sideload file.zip" command on my pc i just wait a few minutes and it says daemon not running on port 5037 and then start successfuly and then error :device not found.
it can seem to reognize my device wether its in recovery, or download mode or fastboot mode.
Try again in other pc that has never been conected to an LG Phone before. It can perfectly be a conflict with drivers installed in the OS.
I've tried man
AFter i cleaned the usb port in one of the chats or forums, i waited a day ovbiously without turning on the phone and cleaned the usb port with alchohal and a q tip and i plugged my phone into my computer and my PC detected something but it only says "Unknown Device" everytime no matter what pc i use it says that. nothing else. but before that none of my pcs would detect theirs a phone plugged in at all.
IAmTechFreq said:
AFter i cleaned the usb port in one of the chats or forums, i waited a day ovbiously without turning on the phone and cleaned the usb port with alchohal and a q tip and i plugged my phone into my computer and my PC detected something but it only says "Unknown Device" everytime no matter what pc i use it says that. nothing else. but before that none of my pcs would detect theirs a phone plugged in at all.
Click to expand...
Click to collapse
Might be a problem with the cord
Sent from my Motorola DynaTAC using XDA Free mobile app
tzzeri said:
Might be a problem with the cord
Sent from my Motorola DynaTAC using XDA Free mobile app
Click to expand...
Click to collapse
No there is no problem with your USB cord or port. You need to do following steps.
http://forum.xda-developers.com/showthread.php?t=2432476
https://www.youtube.com/watch?feature=youtu.be&v=g01Pa7cgdSM&app=desktop
Please let me know if you succeed.
All credit goes to #bender_007

LG g2 doesn't turn on

Ok, first of all, I was at TWRP recovery trying to flash a 4.4.2 rom with all wiped, but I couldn't and I left the phone turned on in TWRP and I went to buy an otg cable to flash the rom, when I arrived home the screen was black and I can't do nothing, is as the phone were turned off but I can't do nothing, it doesn't turn on, I can't get into any of the 2 modes and when I connect to the computer the phone it says that the computer doesn't recognize my phone, it doesn't appears the charging logo, pls someone can help me? I have an lg g2 D802
TheSkyRay said:
Ok, first of all, I was at TWRP recovery trying to flash a 4.4.2 rom with all wiped, but I couldn't and I left the phone turned on in TWRP and I went to buy an otg cable to flash the rom, when I arrived home the screen was black and I can't do nothing, is as the phone were turned off but I can't do nothing, it doesn't turn on, I can't get into any of the 2 modes and when I connect to the computer the phone it says that the computer doesn't recognize my phone, it doesn't appears the charging logo, pls someone can help me? I have an lg g2 D802
Click to expand...
Click to collapse
Check if you are able to access download mode.
If not, check if you can go to recovery.
If both fails, then follow this guide : http://forum.xda-developers.com/showthread.php?t=2582142
The battery. BTW you don't need the otg USB you can use adb command while on twrp.
Oh yea the twrp used many layer of locking you need to swap again and again
Sent from my LG-D802 using XDA-Developers mobile app

Axon 7 EDL Mode Not Working/ can't boot to EDL

My Axon 7 is the A2017U, i had the B32 Nougat running on it and wanted to try the new lineageos 15.1, but had to unlock my bootloader first i used the toolkit like I've done in the past and was able to unlock it and flash twrp, when i try to boot it back on it goes to factory testing mode, i was able to get into twrp and i wiped everything and it stopped the problem of booting directly to FTM but after that i tried to go into EDL mode and it seemed to try to enter the mode but the red led indicator light stays on rather than doing a quick blink. its no longer picked up as a COM port, when i enter fastboot mode adb doesn't seem to work and I'm unsure what to do or if I'm out of luck. Thank you for your time and the advice and help you guys are able to provide.
use ADB
Enable ADB in developer options
use command "adb reboot edl"
Used Twrp to flash Custom ROM, EDL still not fixed
sauerkraut17 said:
use ADB
Enable ADB in developer options
use command "adb reboot edl"
Click to expand...
Click to collapse
I had no OS installed, only twrp recovery and I was able to unlock my boot loader. I tried to flash Lineage-OS ROM in twrp and didn't have much luck because i would get an error code saying it wasn't compatible with my phone and had to go into the ROM files and edit the updater-script file to remove the compatibility check.
In the end I have a working phone with a custom ROM but EDL mode is still not responsive and seems to freeze my phone as soon as I press the 3 buttons to get into EDL. the notification light blink remains on so ill take it as an indicator that something is wrong with the firmware that it uses. i still want to fix it so EDL can be used but unsure how to fix it. I did some researching and was wondering if using a deep flash Engineering cable would work to fix the EDL mode and any other problems that could be there.
levittc5280 said:
I had no OS installed, only twrp recovery and I was able to unlock my boot loader. I tried to flash Lineage-OS ROM in twrp and didn't have much luck because i would get an error code saying it wasn't compatible with my phone and had to go into the ROM files and edit the updater-script file to remove the compatibility check.
In the end I have a working phone with a custom ROM but EDL mode is still not responsive and seems to freeze my phone as soon as I press the 3 buttons to get into EDL. the notification light blink remains on so ill take it as an indicator that something is wrong with the firmware that it uses. i still want to fix it so EDL can be used but unsure how to fix it. I did some researching and was wondering if using a deep flash Engineering cable would work to fix the EDL mode and any other problems that could be there.
Click to expand...
Click to collapse
EDL using the volume/power button has issues with the newer bootstack (which it sounds like you're on). However, since you have an OS now do as I recommended. It will 'reset' the EDL and once done via ADB command it will work with the volume/power buttons like it did before moving forward.
sauerkraut17 said:
EDL using the volume/power button has issues with the newer bootstack (which it sounds like you're on). However, since you have an OS now do as I recommended. It will 'reset' the EDL and once done via ADB command it will work with the volume/power buttons like it did before moving forward.
Click to expand...
Click to collapse
Using the ADB command i was able to get into EDL mode and it was able to get a COM port. using the volume + power buttons had the same problem. Would using an older bootstack fix it?
levittc5280 said:
Using the ADB command i was able to get into EDL mode and it was able to get a COM port. using the volume + power buttons had the same problem. Would using an older bootstack fix it?
Click to expand...
Click to collapse
Have the same issue as you do after installing the bootstack. but even with the adb reboot edl command my phone just restarts normally.. But my OS is working fine, is there any way?
Try to use volume up and volume down only and plugging in USB cable........
stinka318 said:
Try to use volume up and volume down only and plugging in USB cable........
Click to expand...
Click to collapse
Tried everything already. Can only get to DFU mode..
So, I have a similar problem: after flashing a new version of TWRP, now Recovery doesn't start. The problem is that I haven't any OS installed and the last chance to save the phone should be reflash stock by EDL... BUT EDL mode doesn't start if I press vol UP + vol DOWN during power on... (it became black with a red light, but if I digit "ADB devices" on ADB, no devices seems connected, and in the same way it's impossible to use Axon7Toolkit). So: no Recovery, no EDL mode, no OS installed, my phone is a paperweight.
Is there a method to save my Axon 7?
Here is something to try ...
Enter edl via button combo (volup + voldn + pwr)
You should have a black screen ...
Now plug your phone into the cable on your PC/laptop ..
If your PC / laptop doesn't recognise your phone via Miflash or app you are using ...
Try tapping the power button once ...this seems to open/close the port ...
I noticed this when I was using edl mode to flash a ROM
I hope this helps
levittc5280 said:
My Axon 7 is the A2017U, i had the B32 Nougat running on it and wanted to try the new lineageos 15.1, but had to unlock my bootloader first i used the toolkit like I've done in the past and was able to unlock it and flash twrp, when i try to boot it back on it goes to factory testing mode, i was able to get into twrp and i wiped everything and it stopped the problem of booting directly to FTM but after that i tried to go into EDL mode and it seemed to try to enter the mode but the red led indicator light stays on rather than doing a quick blink. its no longer picked up as a COM port, when i enter fastboot mode adb doesn't seem to work and I'm unsure what to do or if I'm out of luck. Thank you for your time and the advice and help you guys are able to provide.
Click to expand...
Click to collapse
I had the same problem a few days ago. When I booted to EDL Mode the red led was instantly on but the PC recognized it somthing like ZTE Handset Device Mode.
1. You can download TWRP Treble by NFound and flash it via your TWRP. Then reboot to recovery again and under the reboot tab its possible to boot to EDL/9008 Mode.
2. You build a EDL Cable to get the device from the red light to EDL mode. Just open some usb cable and connect the green and black (all four) together, plug it in the device and press the power button
until the red light is gone and hold on two additional seconds. Then remove the cable and plug another working cable in and the PC recognize it as Qualcomm in EDL mode.
This is literally how I unbricked my device.
Syberclone said:
Here is something to try ...
Enter edl via button combo (volup + voldn + pwr)
You should have a black screen ...
Now plug your phone into the cable on your PC/laptop ..
If your PC / laptop doesn't recognise your phone via Miflash or app you are using ...
Try tapping the power button once ...this seems to open/close the port ...
I noticed this when I was using edl mode to flash a ROM
I hope this helps
Click to expand...
Click to collapse
Thanks, I tried but this doesn't solve my problem. The strange thing is that connecting my phone in EDL mode, the phone appears in device manager as COM port, but is not seen launching an "ADB devices" command and is not seen in MiFlash too. I tried to change drivers from "ZTE device (something)..." to "Qualcomm HS-USB QDLoader 9008" and in this way, although ADB doesn't detect nothing yet, MiFlash detects a COM port, but flashing an EDL image still fails with a "cannot receive hello packet" error.
Now I ordered a deep flash cable, hope this can solve... next week I'll know if it works.
Thanks, I tried but this doesn't solve my problem. The strange thing is that connecting my phone in EDL mode, the phone appears in device manager as COM port, but is not seen launching an "ADB devices" command and is not seen in MiFlash too. I tried to change drivers from "ZTE device (something)..." to "Qualcomm HS-USB QDLoader 9008" and in this way, although ADB doesn't detect nothing yet, MiFlash detects a COM port, but flashing an EDL image still fails with a "cannot receive hello packet" error.
Now I ordered a deep flash cable, hope this can solve... next week I'll know if it works.
Click to expand...
Click to collapse
Did you resolve problem?
spasacamen said:
Thanks, I tried but this doesn't solve my problem. The strange thing is that connecting my phone in EDL mode, the phone appears in device manager as COM port, but is not seen launching an "ADB devices" command and is not seen in MiFlash too. I tried to change drivers from "ZTE device (something)..." to "Qualcomm HS-USB QDLoader 9008" and in this way, although ADB doesn't detect nothing yet, MiFlash detects a COM port, but flashing an EDL image still fails with a "cannot receive hello packet" error.
Now I ordered a deep flash cable, hope this can solve... next week I'll know if it works.
Click to expand...
Click to collapse
No need to order that cable... If you still can cancel it i'd tell you to do that. You made a mistake by changing the drivers, you had the "ZTE Handset Diagnostic Interface (DFU)" driver, and replaced it with the EDL driver.
This of course does not work because your phone is in DFU MODE instead of EDL. What you have to do is uninstall the device via device manager and also tick "Uninstall driver software for this device", then turn the phone off and enter DFU again, and then use MultiDL from this forum to enter EDL. After that, use MiFlash or EDL Tool, and try flashing a FULL EDL file
By the way ADB will only work on FTM mode or the recovery or on a working system. You won't get ADB on edl mode or dfu mode because they simply don't have adb working, it's normal
i never use xda but this quote thing is what i have aswell
levittc5280 said:
Using the ADB command i was able to get into EDL mode and it was able to get a COM port. using the volume + power buttons had the same problem. Would using an older bootstack fix it?
Click to expand...
Click to collapse
all i see is the red light in edl, whatever i try it Always just goes to a red light and a black screen. this happened after trying to unlock the bootloader. i was in android 8 and tried to lock it, it messed it up as my Phone could not boot anymore, i flashed the stock android 6.0 or something that came with the axon 7 toolkit and it did work but when trying to unlock the bootloader as the device state suddenly was locked it broke the whole thing and i oped edl could save me but even that is broken just like what the person in the quote has
Well the only fix to get EDL mode is through test point, there's a thread of unbricking Axon 7 using test point, find it, you'll need to open your back cover to do this
This in case nothing works to get into EDL mode.

G6 Can't get into download mode (LS993 converted to H873 running android 7)

I have an LG G6 that is running Android 7 H873 firmware, but the IMEI reports that it was originally an LS 993. It does not seem to support VOLTE on Android 7. I would like to update it to Android 9, but I cannot get into download mode by holding down the volume+ button and plugging in the USB cable. It does nothing when I do that. In order to get it to boot into anything, I need to push the fingerprint button on the back. Does anyone know how to get into download mode some other way (adb command?), or why it will not boot into download mode when holding VOL+ and plugging in a connected USB cable? Very strange that my phone is having problems that no one else seems to know about. Thank you for your help.

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