Develop Bugs

Completely unable to boot to download mode

Hi, as the title says I am completely unable to boot to download mode on my E988. I have literally tried every possible combination of button pressing but nothing works. I have tried rebooting to bootloader from cwm but that doesnt work either, all it does is reboot, show the LG logo, then it reboots normally.. I have tried using terminal emulator to use the command "reboot download" but it doesnt work either, all it does is reboot, show the LG logo, then it reboots normally again. It seems that I am completely unable to access it at all. Any ideas?

Have you try with one end of the usb cord already plug in either your computer or phone, hold down both volume buttons, and plug in the other end. This was the only way down load mode would came on for me until I fixed the phone.

Yup I have. No combination of keys and button pressing seems to work for me it's odd.
Sent from my LG-E988 using XDA Free mobile app

To add on to my previous post, when I do the method whereby I hold vol + and vol - and plugging the usb cord in without my phone's battery, a message shows up when it is detected saying that a "...usb device has malfunctioned...". My phone will then just keep showing the lg logo over and over again causing the message to pop up again and again as the phone is detected and then not detected and the cycle just repeats itself. I have tried to reinstall lg drivers but nothing seems to work...
Edit: It would seem that the phone is indeed trying to boot to download mode whether I use the key combination or command, but it is unsuccessful in doing so and just reboots. Has anyone ever encountered this problem?

i can't access download mode on my lg f240l
guys please help me
i have tried to install a cwm on my lf but when i tried to restart it boots up and stopped on lg logo
i want to use flash tool i have the dll and tot file bot i can't access download mode (does not work vol + and connecting it with usb)
and when you start the power button menu and back keys blinking
Does anyone know what to do?

sllavy said:
i can't access download mode on my lg f240l
guys please help me
i have tried to install a cwm on my lf but when i tried to restart it boots up and stopped on lg logo
i want to use flash tool i have the dll and tot file bot i can't access download mode (does not work vol + and connecting it with usb)
and when you start the power button menu and back keys blinking
Does anyone know what to do?
Click to expand...
Click to collapse
i made it
1 pulled out the battery
2 press volume key up and down(at the same time)
3 plug the usb
and it worked !!!!
happy with download mode and flash tool

sllavy said:
i made it
1 pulled out the battery
2 press volume key up and down(at the same time)
3 plug the usb
and it worked !!!!
happy with download mode and flash tool
Click to expand...
Click to collapse
I have tried that at least a 100 times (I really did) but it doesnt work for me...

Me too, I'm having the same problem, I'm totally unable to get into download mode using standard methods (vol up/down, battery in, battery out etc etc)

dkusnierz said:
Me too, I'm having the same problem, I'm totally unable to get into download mode using standard methods (vol up/down, battery in, battery out etc etc)
Click to expand...
Click to collapse
I have the same problem, and I don´t know what to do. I get lost.....
I can understand why this happend. It should be a simple way to enter in download mode, but nothing results. I´m almost crazy...

Rucosta said:
I have the same problem, and I don´t know what to do. I get lost.....
I can understand why this happend. It should be a simple way to enter in download mode, but nothing results. I´m almost crazy...
Click to expand...
Click to collapse
Please help. I am stuck too... No download mode is insane

Cant enter fastboot ＆ recovery mode！

Hello，everyone,i got a problem that i cant enter fastboot and recovery mode.
today ,i installed CM12 22/7 upgrade ,and before i install this ,i did a backup of build.prop because i have V4A and every time i upgrade CM i have to change this build,prop ,so i want make a copy and when i finish upgrade i can just move that file without do anything ,and everything goes well, i installed upgrade and installed V4A driver ,it says i need restart,so i restarted,but after LG logo ,screen turn black, cant enter system ! i thought maybe i flash CM one more time can repair this,so i press POWER and volume down,but,nothing happen ,after LG logo,and screen turn black,and i try to enter fastboot mode ,its the same ,when LG logo shows screen turn black.......
My phone is LG d855,and my English is bad,i hope you can understand
Can anybody help me?

did you try entering Download mode?

Phone stuck in bootloop, help please
wrong trhead

Are you sure you there is no fastboot and no download mode?
You can enter download mode by pressing and holding the “Volume Up” and connecting the USB cable from phone to PC
If it works then you Soft bricked it...And you can use this guide to fix it:
http://forum.xda-developers.com/showthread.php?t=2785089
.
.
.
BUT if that does not work then you Hard bricked the phone
I had that problem because of flashing with faulty win8 drivers...no download mode or fastboot, all i got was security warning and bootloop. The only way you can fix hardbrick is through JTag, but i don't know if you can fix it without paying someone money, because you need special hardware to do it. You can find people on ebay that can fix it but it will cost you 30-50$.
I sent mine to warranty...they didn't know what was wrong with it and couldn't fix it...and so they just replaced the motherboard. If you have a warranty then send it and do NOT!! tell them you flashed it or rooted it. Tell them you don't know what happened...The chances of them finding out is very small.
If ebay and/or warranty not work, then there was an article on the Internet to fix a hard brick but for some reason it is now password protected...i do not know why....You can send the owner an email so he can give you the password.
http://www.androidbrick.com/unbrick-recover-your-dead-lg-g3-g2-all-variants
...There is another article but it is in Portuguese
http://arena4g.com/forums/topic/tutorialunbrickhard-unbrickd855
But then again you cant be certain this will work either.
Conclusion: Fk LG...They don't want people upgrading their slow buggy software.

Alex_XV6700 said:
did you try entering Download mode?
Click to expand...
Click to collapse
i cant enter download mode,always turn black after LG logo

Disconnect cable from pc and phone
Press power + vol -
You will get first black screen, keep pressing until lg logo appears and it shuts off completely.
Then press just vol + and reconnect cable to computer.
That should leave you in download mode or fastboot.

Alex_XV6700 said:
Disconnect cable from pc and phone
Press power + vol -
You will get first black screen, keep pressing until lg logo appears and it shuts off completely.
Then press just vol + and reconnect cable to computer.
That should leave you in download mode or fastboot.
Click to expand...
Click to collapse
no,when i reconnect phone,and only press volume + ,its shows i am Charging then phone is off.......cant enter download mode,but i found when i press volume +and- , i can enter hardware key control mode,but there only have 3 choice,cancel , mode on and mode off,i have tried mode on and mode off,doesnt work.

rubisco1 said:
Are you sure you there is no fastboot and no download mode?
You can enter download mode by pressing and holding the “Volume Up” and connecting the USB cable from phone to PC
If it works then you Soft bricked it...And you can use this guide to fix it:
http://forum.xda-developers.com/showthread.php?t=2785089
.
.
.
BUT if that does not work then you Hard bricked the phone
I had that problem because of flashing with faulty win8 drivers...no download mode or fastboot, all i got was security warning and bootloop. The only way you can fix hardbrick is through JTag, but i don't know if you can fix it without paying someone money, because you need special hardware to do it. You can find people on ebay that can fix it but it will cost you 30-50$.
I sent mine to warranty...they didn't know what was wrong with it and couldn't fix it...and so they just replaced the motherboard. If you have a warranty then send it and do NOT!! tell them you flashed it or rooted it. Tell them you don't know what happened...The chances of them finding out is very small.
If ebay and/or warranty not work, then there was an article on the Internet to fix a hard brick but for some reason it is now password protected...i do not know why....You can send the owner an email so he can give you the password.
http://www.androidbrick.com/unbrick-recover-your-dead-lg-g3-g2-all-variants
...There is another article but it is in Portuguese
http://arena4g.com/forums/topic/tutorialunbrickhard-unbrickd855
But then again you cant be certain this will work either.
Conclusion: Fk LG...They don't want people upgrading their slow buggy software.
Click to expand...
Click to collapse
thx for your reply. i tried many times with different way,try to enter download mode or fastboot .......but failed.and now i decided buy Nexus 6

[VIDEO] Stuck in bootloop (Not Hardware)

Hi, it's my first time posting here as I was unable to find a solution looking at similar threads.
Anyways, I was trying to install another ROM on the G4 but I think I messed up deleted everything entirely and got bootlop and reboot. I'm not exactly sure what I was doing as I'm new to these things.
What leads me to believe that this is not a hardware issue (as widely covered) is that during the bootloop, there's a tiny little green android in the middle of the screen with a small 3D box on belly.
When trying to solve this issue, I've tried:
Volume Up + Power to enter Download Mode
Nothing happens - back to the green droid
Volume Up + Power + USB to computer to enter Download Mode
Nothing happens - back to the green droid
Volume Up ONLY + USB to computer to enter Download Mode
Goes in Download Mode for a few seconds, but then goes back to the green droid
Volume Down + Power to enter Recovery Mode
Nothing happens - back to the green droid
Volume Down + Power to enter Hard Reset Mode
Allows me to factory reset, but then back to the green droid and bootloop
Connecting the G4 to the computer to see if phone would be available in device manager -
Not found
Nothing I've tried seems to shake off the little green android.
The phone doesn't connect to the computer at all.
Here's a video: youtu(dot)be/MfnkhZTPOz0
The top left of the G4 says "Bootloader State : Bootloader Unlocked!"
Here's a clearer image of the green android: android-hilfe(dot)de/attachments/2012-09-22-03-41-16-jpg.124036
Any suggestions?

Try this
http://forum.xda-developers.com/android/general/unbrick-lg-model-download-recovery-t3060184
thebeardedshade said:
Hi, it's my first time posting here as I was unable to find a solution looking at similar threads.
Anyways, I was trying to install another ROM on the G4 but I think I messed up deleted everything entirely and got bootlop and reboot. I'm not exactly sure what I was doing as I'm new to these things.
What leads me to believe that this is not a hardware issue (as widely covered) is that during the bootloop, there's a tiny little green android in the middle of the screen with a small 3D box on belly.
When trying to solve this issue, I've tried:
Volume Up + Power to enter Download Mode
Nothing happens - back to the green droid
Volume Up + Power + USB to computer to enter Download Mode
Nothing happens - back to the green droid
Volume Up ONLY + USB to computer to enter Download Mode
Goes in Download Mode for a few seconds, but then goes back to the green droid
Volume Down + Power to enter Recovery Mode
Nothing happens - back to the green droid
Volume Down + Power to enter Hard Reset Mode
Allows me to factory reset, but then back to the green droid and bootloop
Nothing I've tried seems to shake off the tiny little green android.
The phone doesn't connect to the computer at all.
Here's a video: youtu(dot)be/MfnkhZTPOz0
The top left of the G4 says "Bootloader State : Bootloader Unlocked!"
Here's a clearer image of the green android: android-hilfe(dot)de/attachments/2012-09-22-03-41-16-jpg.124036
Any suggestions?
Click to expand...
Click to collapse

From the thread you gave me it says 'YOU GET QHSUSB BULK MODE IN DEVICE MANAGER THEN INSTALL QUALCOMM DRIVER'.
But unfortunately, when I connect my G4 to the computer, it does not register 'QHSUSB_BULK'. In fact, it does nothing at all. The phone keeps rebooting and the computer does not detect.
So I cannot get either 'QUALCOMM HS-USB 9008' or 'QUALCOMM HS-USB 9006'.
gabytzubc said:
http://forum.xda-developers.com/android/general/unbrick-lg-model-download-recovery-t3060184
Click to expand...
Click to collapse

Maybe its the partition table bricked. How did u get in this bootloop ? Few days ago i search half a Day to repair a soft bricked xiaomi. And nothing seems to worknbecoz the partition table was gone. So i have to do it în fastboot mode to write the partition table and flash all the files and after that use usual programe to flash and a new kdz
gabytzubc said:
Its not icon pack its g5 theme
Sent from my LG-H815 using XDA-Developers mobile app
Click to expand...
Click to collapse
thebeardedshade said:
From the thread you gave me it says 'YOU GET QHSUSB BULK MODE IN DEVICE MANAGER THEN INSTALL QUALCOMM DRIVER'.
But unfortunately, when I connect my G4 to the computer, it does not register 'QHSUSB_BULK'. In fact, it does nothing at all. The phone keeps rebooting and the computer does not detect.
So I cannot get either 'QUALCOMM HS-USB 9008' or 'QUALCOMM HS-USB 9006'.
Click to expand...
Click to collapse
Sent from my LG-H815 using XDA-Developers mobile app

security verification boot error... :(

i have facing this issue since when i unroot my g3 d855 then i forget to close the lg flash tool and accidently i plugged my phone to computer then it went to firmware upgrade mode then i unplugged immediately.Since then my phone stuck in security boot error and i cant go to download mode and the recovery(power+volume down) is also not working,plz help plz..

bishal_red_rvp said:
i have facing this issue since when i unroot my g3 d855 then i forget to close the lg flash tool and accidently i plugged my phone to computer then it went to firmware upgrade mode then i unplugged immediately.Since then my phone stuck in security boot error and i cant go to download mode and the recovery(power+volume down) is also not working,plz help plz..
Click to expand...
Click to collapse
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359

bishal_red_rvp said:
i have facing this issue since when i unroot my g3 d855 then i forget to close the lg flash tool and accidently i plugged my phone to computer then it went to firmware upgrade mode then i unplugged immediately.Since then my phone stuck in security boot error and i cant go to download mode and the recovery(power+volume down) is also not working,plz help plz..
Click to expand...
Click to collapse
FIRST install the DRIVER from this thread: http://forum.xda-developers.com/showthread.php?t=2785089
See in the part 2015 with TOT files...
(if any other drivers are present, uninstall them and do a clean install)
You need to get in Download mode to be able to fix it without having to open the phone.
1. Unplug phone from pc and power off
2. Remove back cover and remove the battery
3. Plug the micro-usb cable into the phone
4. Press and HOLD the VOLUME DOWN (make sure you press it from the edge, far from the powerbutton)
5. Put the battery - Dont let go of Volume Down yet.
6. Connect the micro-usb cable to the pc - Dont let go of volume down yet
7. Wait for the pc to recognize it, and the download mode appears on the phone, now you can let go of volume down
Repeat again, first time might not work.
Post results here...
PS, quote me because i might not see and answer then. good luck

LG G8 STUCK IN Qualcomm HS-USM QDLoader 9008

Today I Bricked My LG820Qm
I was updating my Lg g8 using LG UP, When the Process on 64% my PC power off
After that my phone stuck in Qualcomm HS-USM QDLoader 9008
Any solution to come out from this mode to Downloaded Mode so that i can update using LG up.
I was updating G820QM10i_00_NAO_US_OP_0401 to G820QM20b_00_NAO_US_OP_1224
My LG up LGUP_Lab_Frame_Ver_1_16_0_3

Can you try to switch to download mode by press&hold VOL+ while inserting the USB cable (connected to PC). Phone needs to be off while doing so.

tron1 said:
Can you try to switch to download mode by press&hold VOL+ while inserting the USB cable (connected to PC). Phone needs to be off while doing so.
Click to expand...
Click to collapse
I tried not working
If i press&hold VOL+ while inserting the USB cable still my phone come with Qualcomm HS-USB Mode
thanks for your reply

What happens if you press&hold VOL- (furing the whole procedure) push the power button until the phone vibrates, release the button und press&hold the power button?

tron1 said:
What happens if you press&hold VOL- (furing the whole procedure) push the power button until the phone vibrates, release the button und press&hold the power button?
Click to expand...
Click to collapse
Which ever combination, Vol- + power phone power of
with in sec it boot to Qualcomm mode

I don't know where to ask so I'm gonna try here. My G820N is stuck on Android 10 beta. Whenever I flash an official kdz, it only allows for emergency calls. Can't do anything. Any help would be appreciated

Following, in right here with ya.

atsuisofu said:
Following, in right here with ya.
Click to expand...
Click to collapse
Try entering download mode with phone disconnected from USB cable.
Also try to see if it gets recognized by LG-UP or by LG Bridge. These 2 softwares don't need download mode to be able to flash, just the phone to be recognized on some PORT.
Try also factory reset hard menu. Also try switching between Slot A and Slot B. There is also this backup method. Phone is not dead on one of those slots.
If nothing works (but slot a slot b should 100% work) , wait for the firehose, it's just around the corner. That will restore the phone back 100%.
For more info search v50thinq on telegram app. :good:

I can t get to download as it freezes and without the USB cable it doesn't even try and enter. I appreciate the recommendations. I was thinking of the a/b seit hbut without the use of fastboot I am at a loss of how to switch between the two as I thought the system chose and the switch happened upon rebooting once a system had been selected ie as in turning the unit off after loading the os set a flag to go to the opposite system upon completing the inftframs and boot sequence.

vikramanananda said:
Which ever combination, Vol- + power phone power of
with in sec it boot to Qualcomm mode
Click to expand...
Click to collapse
Hi, i'm facing the same problem today, my QM will not go into any mode other than the Qualcomm mode. Were you able to recover your phone finally ?

vikramanananda said:
Which ever combination, Vol- + power phone power of
with in sec it boot to Qualcomm mode
Click to expand...
Click to collapse
did you ever get it fixed. im having the same problem.

johnnycm77 said:
did you ever get it fixed. im having the same problem.
Click to expand...
Click to collapse
me too, do you fix it?

vikramanananda said:
Today I Bricked My LG820Qm
I was updating my Lg g8 using LG UP, When the Process on 64% my PC power off
After that my phone stuck in Qualcomm HS-USM QDLoader 9008
Any solution to come out from this mode to Downloaded Mode so that i can update using LG up.
I was updating G820QM10i_00_NAO_US_OP_0401 to G820QM20b_00_NAO_US_OP_1224
My LG up LGUP_Lab_Frame_Ver_1_16_0_3
Click to expand...
Click to collapse
So, if the device, as you say, lost power during an update like that, then almost assuredly you have at least one, if not numerous corrupted partitions.
And, it's specific partitions on the device that allow it to enter download mode. One of these most know about or have heard of is the laf partition. But other have to be there also for it to work, I don't remember exactly what the others off the top of my head, but that info is easily found.
The key thing you need (or any others commenting same prob), is to be able to enter EDL mode and have qfil installed and recognizing the device. If you can get that far, it would be easy to find the correct partitions you could flash with qfil and then immediately go from qfil to download mode.
Many many people have done this. Just get qfil set up (see guides section) and get the device recognized. that takes some effort but it's def doable.