H870 Unlocked bootloader - can't boot into Download Mode - LG G6 Questions and Answers

Hi, so my G6 is quite laggy so I thought maybe reflashing the firmware may help but the problem is, I can't boot into Download Mode. I tried it doing the normal way, with hardware buttons and I tried the adb command and with both methods phone still boots as normal. C

righN said:
Hi, so my G6 is quite laggy so I thought maybe reflashing the firmware may help but the problem is, I can't boot into Download Mode. I tried it doing the normal way, with hardware buttons and I tried the adb command and with both methods phone still boots as normal. C
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Click to collapse
Download Mode? I don't think non-Samsung phones have a download mode, do you mean fastboot mode? If you unlocked the bootloader, Install LG usb drivers and use 'adb reboot-bootloader' to reboot into fastboot mode, from here you can use 'fastboot flash recovery XXX.img' to flash a twrp image and use TWRP to install ROMs

I've had a few lg phones and from a power off state just hold volume down and plug the usb in while it's connected to the computer.
I might be remembering that wrong, try volume up and plug as well.
My current lg has no development so it's been a while

Mnky313 said:
Download Mode? I don't think non-Samsung phones have a download mode, do you mean fastboot mode? If you unlocked the bootloader, Install LG usb drivers and use 'adb reboot-bootloader' to reboot into fastboot mode, from here you can use 'fastboot flash recovery XXX.img' to flash a twrp image and use TWRP to install ROMs
Click to expand...
Click to collapse
Yes, I do mean download mode. LG has Download Mode. TWRP won't help, because stock LG firmware is in .kdz.

dolph8886 said:
I've had a few lg phones and from a power off state just hold volume down and plug the usb in while it's connected to the computer.
I might be remembering that wrong, try volume up and plug as well.
My current lg has no development so it's been a while
Click to expand...
Click to collapse
I tried that method, didn't help.

righN said:
Yes, I do mean download mode. LG has Download Mode. TWRP won't help, because stock LG firmware is in .kdz.
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Click to collapse
I didnt even know lg had a download mode,have you tried using LG UP to flash the kdz

Mnky313 said:
I didnt even know lg had a download mode,have you tried using LG UP to flash the kdz
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Click to collapse
That's what I'm trying to do... But I want to reinstall the firmware not update so I have to get into Download Mode.

Mnky313 said:
I didnt even know lg had a download mode,have you tried using LG UP to flash the kdz
Click to expand...
Click to collapse
I'll be damned I actually tried to just to an upgrade with LG UP without booting into download mode by myself and it reflashed the firmware! I did an factory reset after that and now let test if it still lags.

righN said:
I'll be damned I actually tried to just to an upgrade with LG UP without booting into download mode by myself and it reflashed the firmware! I did an factory reset after that and now let test if it still lags.
Click to expand...
Click to collapse
cool, glad you got it working, I've never used LG UP or download mode, I always just flash zefie's zip in TWRP

Related

[Q] Stuck on Fastboot (Unable to go to download mode)

I have an LG G2 AT&T D800.
After I rooted my phone successfully, I also flash a custom recovery successfully.
After I did that, I wipe out my data / cache.
And i tried to install a ROM and Google Apps.
I rebooted my phone and I'm stuck with " Fast boot mode started "
I had download mode working but i accidentally made it stop working after i did CMS88168 steps from this page.
http://forum.xda-developers.com/showthread.php?t=2477595
Now I don't have my download mode starting to work and I have no clue on how to fix my phone.
Please help.
alvingaoat said:
...
I rebooted my phone and I'm stuck with " Fast boot mode started "
...
Now I don't have my download mode starting to work and I have no clue on how to fix my phone.
Click to expand...
Click to collapse
Look here
It's for the F320 variants but there is also a link to search for other variant files.
Also just in case you are unable to do what phoost suggested, what i did was keep tr ying to get into recovery, the lg logo would blink fast, but you just have to keep tr ying, and i finally got it and reflashed my rom and its been fine ever since...i did get scared tho, but my g2 is only 4 days old right now, so i can always return and get another, but just do what i said
help
MasterSe7en said:
Also just in case you are unable to do what phoost suggested, what i did was keep tr ying to get into recovery, the lg logo would blink fast, but you just have to keep tr ying, and i finally got it and reflashed my rom and its been fine ever since...i did get scared tho, but my g2 is only 4 days old right now, so i can always return and get another, but just do what i said
Click to expand...
Click to collapse
My lg g2 is stuck in fastboot mode started/usd start() an I press the buttons to go to recovery mode but recovery mode just flashes on the screen an it goes back to fastboot mode screen
larryb723 said:
My lg g2 is stuck in fastboot mode started/usd start() an I press the buttons to go to recovery mode but recovery mode just flashes on the screen an it goes back to fastboot mode screen
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Click to collapse
I am having this issue. Has anyone figured out how to fix? I need download mode to return to stock.
Droc1983 said:
I am having this issue. Has anyone figured out how to fix? I need download mode to return to stock.
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Click to collapse
i got the same problem here when flashing the slimkat.
fastboot is like adb sideload.
when you see the usb command, you need to plug the phone to the PC to sync them.
This happened to me a while back the link in post two is how I solved it. You just need to find the laf.img for your model, put it in the same folder as adb and run the adb commands in the tutorial. You might have to change the directory in cmd prompt to where adb is located. Once the laf is successfully flashed you can boot into download mode and flash the kdz for your model.
Swizzle82 said:
This happened to me a while back the link in post two is how I solved it. You just need to find the laf.img for your model, put it in the same folder as adb and run the adb commands in the tutorial. You might have to change the directory in cmd prompt to where adb is located. Once the laf is successfully flashed you can boot into download mode and flash the kdz for your model.
Click to expand...
Click to collapse
I tried this but it starts download mode but then goes to fastboot. I was trying to keep download mode. I used the laf.img in the the link you posted. I'm on verizon lg g2 is that the right laf.img?
***Got it thanks***
In the link above that is for the Korean g2 I believe. If I remember correctly there's a link to other img files in his thread. You might also consider flashing the proper boot.img as well. It was a while ago that this happened so I don't recall exactly but if you flash the Verizon boot.img and laf.img you should be good.
Phoost said:
Look here
It's for the F320 variants but there is also a link to search for other variant files.
Click to expand...
Click to collapse
that link is not working

[Q] i can't repair my lg g2 of anyway

sorry for my english, at this monday i received my lg g2 from ali express and i the uptade to KK trought usb to my computer with Lg Pc suite, when it finished my mobile phone reboot and it keep in the lg logo, i have tried all methods, but ubuntu doesn'y detect it, and when i put it in the download mode apears a black screen whit
1020]Fastboot mode started
[1120]-reset-
[1130]-portchange-
[1190]fastboot: processing comands
anybody have some solution?
zooco111 said:
sorry for my english, at this monday i received my lg g2 from ali express and i the uptade to KK trought usb to my computer with Lg Pc suite, when it finished my mobile phone reboot and it keep in the lg logo, i have tried all methods, but ubuntu doesn'y detect it, and when i put it in the download mode apears a black screen whit
1020]Fastboot mode started
[1120]-reset-
[1130]-portchange-
[1190]fastboot: processing comands
anybody have some solution?
Click to expand...
Click to collapse
Can u access download mode, if can u re lucky use .kdz method you can find here on xda and back phone to normal condition.
Download fastboot, download aboot.img, boot.img, laf.img
Fastboot flash aboot aboot.img
Fastboot flash boot boot.img
Fastboot flash laf laf.img
KiaTheKing said:
Can u access download mode, if can u re lucky use .kdz method you can find here on xda and back phone to normal condition.
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Click to collapse
No i can't acces to download mode because when i conect it to the computer whit usb it appears a black screen whit that message.
bender_007 said:
Download fastboot, download aboot.img, boot.img, laf.img
Fastboot flash aboot aboot.img
Fastboot flash boot boot.img
Fastboot flash laf laf.img
Click to expand...
Click to collapse
Hi, where can i download it? and how i transfer to my mobile if ubuntu doesn't know it.
do you know some tutorial?.
thanks
zooco111 said:
Hi, where can i download it? and how i transfer to my mobile if ubuntu doesn't know it.
do you know some tutorial?.
thanks
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2277112
zooco111 said:
No i can't acces to download mode because when i conect it to the computer whit usb it appears a black screen whit that message.
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Click to collapse
Connect your phone to pc via cable..keep the power button pressed and when it turns off, press volume up and hold it until the phone starts..and maybe it will enter in download mode... I was stuck to fastboot too some months ago and this worked for me

H918 stuck on fastboot.

One of my costumer V20 is now stuck in fastboot.
Whatever I do, it's keep coming back to fastboot mode.
I can enter download mode, and try flash , even using the costum LG up, with upgrade option, partition DL option.
I use Box ( octopus, Z3x ).
I don't know what is wrong with this phone.
it's only going back to fastboot.
Any help is really apreciated.
Thank You.
sing2x said:
One of my costumer V20 is now stuck in fastboot.
Whatever I do, it's keep coming back to fastboot mode.
I can enter download mode, and try flash , even using the costum LG up, with upgrade option, partition DL option.
I use Box ( octopus, Z3x ).
I don't know what is wrong with this phone.
it's only going back to fastboot.
Any help is really apreciated.
Thank You.
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Click to collapse
What does using the "fastboot reboot" cmd do ?
Ak7J4 said:
What does using the "fastboot reboot" cmd do ?
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Click to collapse
It goes back straight to fastboot after LG logo
If you can get into download mode try the 'upgrade' option in lgup
It is stuck in fastboot because your customer tried to root it with lafsploit without unlocking the bootloader.
They have two choices:
1 - Send it to LG to have it repaired.
2 - Wait for me to finish lafsploit 2.0 which will unlock their bootloader, and their phone will just start working.
The partitions that hold the unlock information are not touched when you flash a KDZ, so no amount of flashing is going to fix it.
-- Brian
runningnak3d said:
It is stuck in fastboot because your customer tried to root it with lafsploit without unlocking the bootloader.
They have two choices:
1 - Send it to LG to have it repaired.
2 - Wait for me to finish lafsploit 2.0 which will unlock their bootloader, and their phone will just start working.
The partitions that hold the unlock information are not touched when you flash a KDZ, so no amount of flashing is going to fix it.
-- Brian
Click to expand...
Click to collapse
I think that's what happen, and I don't have any choice except to wait . Returning to LG is not an option.
Thank you very much sir.
did you get to solve this problem also have one stuck in fastboot mode but no download mode
boot loader seem to be lock
thee011 said:
did you get to solve this problem also have one stuck in fastboot mode but no download mode
boot loader seem to be lock
Click to expand...
Click to collapse
If you cant get into download mode by powering off, holding vol up and then plugging into a pc (no power button needed) then you dont have a phone anymore. Unless rooted via dirtysanta which replaces aboot (which provides fastboot), the stock fastboot mode of the h918 can't actually flash anything to the phone which means no unbricking with it; TWRP and download mode are only ways to restore firmware.
I know this is an old thread but my gf has the h918 which is unlocked with twrp Installed, she tried updating magisk from inside magisk and now she's stuck in fastboot mode .The fastboot reboot command does not reboot the phone I even booted into twrp and wiped cache any ideas?
wolf45801 said:
I know this is an old thread but my gf has the h918 which is unlocked with twrp Installed, she tried updating magisk from inside magisk and now she's stuck in fastboot mode .The fastboot reboot command does not reboot the phone I even booted into twrp and wiped cache any ideas?
Click to expand...
Click to collapse
This is a Magisk 20.2 issue there's at two threads in the LGV20 forum on how to recover
Sent from my LG-H910 using XDA Labs

Stuck in Fastboot Lg g6 h872 (T-mobile)

Hi, My lg g6 H872 is stuck in fast boot after i restarted it by removing a system app through titanium backup.
-my rom was rooted official 11g
- it cant work with any fast boot command. ( so i cant go to recovery or reinstal it)
- when i restart it come back to same screen
- when i hold power it restart same sreen (fastboot)
plz help if anyone know or mention any thread which can help
thankyou
if you are able to boot to download mode then you can use lgup tool along with the patched v20dll and use it flash 11g or newer kdz if available and you should be good to go.
lingarajug said:
if you are able to boot to download mode then you can use lgup tool along with the patched v20dll and use it flash 11g or newer kdz if available and you should be good to go.
Click to expand...
Click to collapse
im not able to boot in download mode, it restart to fastboot always
smhg007 said:
im not able to boot in download mode, it restart to fastboot always
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Click to collapse
if you kinow what system app you removed you can flash it back through fastboot commands
lingarajug said:
if you kinow what system app you removed you can flash it back through fastboot commands
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Click to collapse
fastboot commands are not working
smhg007 said:
fastboot commands are not working
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Click to collapse
Have you installed LG's USB drivers? (Download here)
Then connect your G6 to the PC and run the command fastboot devices to check if your device is listed.
My phone lenovo a7000 .. It's work normal but I can't fix imei in custom ROM so I have to unlock OEM .
When I try to boot thru fastboot mode it stuck on it!
How can I fix it
khaled ghanem said:
My phone lenovo a7000 .. It's work normal but I can't fix imei in custom ROM so I have to unlock OEM .
When I try to boot thru fastboot mode it stuck on it!
How can I fix it
Click to expand...
Click to collapse
Use sp flash tool and flash stock firmware search it on YouTube
Sent from my LG G6 using XDA Labs
---------- Post added at 09:29 AM ---------- Previous post was at 09:26 AM ----------
smhg007 said:
fastboot commands are not working
Click to expand...
Click to collapse
If your phone is in fastboot mode then you can run fastboot commands but i feel they're useless because your phone is bricked so take it to a service center
Sent from my LG G6 using XDA Labs
I had same problem.
Connect usb cabel to PC.
Make reboot: hold vol- and power buttons
When display off, release these buttons and press and hold vol+.
Do it quickly. You will see download mode.
Good luck)

H872 missing download mode. Help me!

Hi, first sorry for my bad English.
I have one H872 mobile phone, i try root it and install TWRP ( root unsuccess, TWRP sucess). After i try install new rom cook via TRWP it working but i want back to stock so i decise follow this thread https://forum.xda-developers.com/tmobile-g6/development/h87211g-oem-flashable-rom-nougat-t-t3848254
I flash stockLAF to get download mode but its not working, now my phone missing big download mode, small download mode left but it no longer after 5s when i try into download mode.
Anyone can fix this issue, help me pls,..!
Thank you so much!
I try turn on my phone and using LGUP reflash but not working, lgup cant recogize my phone!.
Like "download mode" partion was gone or error.
https://forum.xda-developers.com/tmobile-g6/how-to/root-h872-to-including-11g-t3775518 <--- focus "To Restore Download Mode"
Good luck to you !!!
i make 4 modules for your need, you can just flash laf.zip only and download mode will back. if you wish to make it fully stock then flash all of them, I assume you can access twrp though
dwonload link
ProReturn said:
https://forum.xda-developers.com/tmobile-g6/how-to/root-h872-to-including-11g-t3775518 <--- focus "To Restore Download Mode"
Good luck to you !!!
Click to expand...
Click to collapse
immns said:
i make 4 modules for your need, you can just flash laf.zip only and download mode will back. if you wish to make it fully stock then flash all of them, I assume you can access twrp though
dwonload link
Click to expand...
Click to collapse
Bro, i cant acess TRWP, its gone when i try flash stockLAF .
how to flash it,
just try flash something form fastboot mode but always got error " remote error: unknow command". As my know, we must have root if you want flash with fastboot but i have nothing.
sosad. pls, help me!
so tell me what's after 5 sec small Download Mode, it reboot, blank or else? Did you install twrp on recovery partiton?
to enter recovery read this under Master reset with hardware keys
immns said:
so tell me what's after 5 sec small Download Mode, it reboot, blank or else? Did you install twrp on recovery partiton?
to enter recovery read this under Master reset with hardware keys
Click to expand...
Click to collapse
after that my phone auto reboot to system bro. no way into download partion. i flash TRWP to download partion follow root tut https://forum.xda-developers.com/tmobile-g6/how-to/root-h872-to-including-11g-t3775518:(
my recovery partion show me " no command" when i try into it
mr.ttd1989 said:
i flash TRWP to download partion follow root tut https://forum.xda-developers.com/tmobile-g6/how-to/root-h872-to-including-11g-t3775518:(
Click to expand...
Click to collapse
that means you can enter twrp via method i've mentioned before
immns said:
that means you can enter twrp via method i've mentioned before
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Click to collapse
no, i acess to twrp on fastboot mode
when i using "master reset" with key they give me truly master reset not recovery partion
mr.ttd1989 said:
no, i acess to twrp on fastboot mode
when i using "master reset" with key they give me truly master reset not recovery partion
Click to expand...
Click to collapse
so unfortunately this phone has no fastboot command except unlock or relock bootloader
i hope you don't have recent 20g firmware. If that so, you can install LG Bridge to update your phone to latest OS (I believe laf/download mode will restored) then try to root again carefully.
if you already using latest 20g firmware then wait untill T-mobile release new update so you can update it via LG bridge
immns said:
so unfortunately this phone has no fastboot command except unlock or relock bootloader
i hope you don't have recent 20g firmware. If that so, you can install LG Bridge to update your phone to latest OS (I believe laf/download mode will restored) then try to root again carefully.
if you already using latest 20g firmware then wait untill T-mobile release new update so you can update it via LG bridge
Click to expand...
Click to collapse
now i got rom cook on my phone, cant update via OTA or LG bridge. what can i do? i try LGflash toot but we not have .dll file to G6, so sad.
Do we have a anyway to recovy the downloadmode with the romcook I'm using?
mr.ttd1989 said:
i try LGflash toot but we not have .dll file to G6, so sad.
Click to expand...
Click to collapse
lg flash tool is outdated version of lgup. be patient, i believe t-mobile will release G6's Pie update soon or later. I can't help any further now, sorry man.
Relax, you can still use your phone right? just stay out of root dependent apps and find another alternatives :cheers
immns said:
lg flash tool is outdated version of lgup. be patient, i believe t-mobile will release G6's Pie update soon or later. I can't help any further now, sorry man.
Relax, you can still use your phone right? just stay out of root dependent apps and find another alternatives :cheers
Click to expand...
Click to collapse
yes, my phone still alive but really want back to stock coz my bank app cant run win this custom rom
mr.ttd1989 said:
yes, my phone still alive but really want back to stock coz my bank app cant run win this custom rom
Click to expand...
Click to collapse
Some custom rom has built in root which can activated in setting app (possibly inside developer menu) good luck for that.

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