Develop Bugs

[Q] USB Device Not Recognized in Download Mode HELP!!

Hi, I recently flash a CWM recovery and sadly it is not booting, just blue screen. So I decided to restock my gio using ODIN. So I turn it off, Boot to download mode and connect it to the PC, and then it says "USB Device Not Recognized".
What I already did:
- Use different PCs
- Use different USB cables
- Try to boot to Emergency DLoad Mode, but sadly can't flashed through Odin
Help me guys, I love this phone, I won't let this phone die. :crying:

AngSanley said:
Hi, I recently flash a CWM recovery and sadly it is not booting, just blue screen. So I decided to restock my gio using ODIN. So I turn it off, Boot to download mode and connect it to the PC, and then it says "USB Device Not Recognized".
What I already did:
- Use different PCs
- Use different USB cables
- Try to boot to Emergency DLoad Mode, but sadly can't flashed through Odin
Help me guys, I love this phone, I won't let this phone die. :crying:
Click to expand...
Click to collapse
Have you installed the usb drivers ?

dragon_chris97 said:
Have you installed the usb drivers ?
Click to expand...
Click to collapse
Yeah, I even installed and uninstalled the Kies
Sent from my GT-P1000 using Tapatalk

Hi. I have the same problem.
Have you solved this problem?
I did the same as you and my phone is 'dead'. Could you help me?

Any1 found a solution to this?
Has anyone found a solution to this?
If i can get my windows to regohgnize the device, i can update n fix it.
Check this post for details on my brick: http://forum.xda-developers.com/gen...-gio-s5660-bricked-boot-t3013614#post58457601

x6XceS6x said:
Has anyone found a solution to this?
If i can get my windows to regohgnize the device, i can update n fix it.
Check this post for details on my brick: http://forum.xda-developers.com/gen...-gio-s5660-bricked-boot-t3013614#post58457601
Click to expand...
Click to collapse
It has to be Window 7 or lower and you have install samsung kies or the usb drivers.

My G3 D855 won't boot

I'm rooted and have made a have few changes to my phone in general, but now it won't start up. It gets past the LG logo but then gets stuck at a black screen with the LED's cycling colours.
I've tried to factory reset it but it still gets stuck at the black screen. How do I fix this?

I has this a few days ago.
To fix it you will need LG mobile drivers and LG PC Suite installed.
Power off your G3. Then start it in download mode by holding the volume down button and connect a USB cable to your phone. The screen should show download mode. Connect your phone to your computer and start LG PC Suite. Don't worry if PC Suite doesn't recognise your G3. Go to the mobile device menu and select restore upgrade errors. PC Suite should download the latest firmware and install it. You will be back to a factory reset but your G3 will be working again ☺

saitch76 said:
I has this a few days ago.
To fix it you will need LG mobile drivers and LG PC Suite installed.
Power off your G3. Then start it in download mode by holding the volume down button and connect a USB cable to your phone. The screen should show download mode. Connect your phone to your computer and start LG PC Suite. Don't worry if PC Suite doesn't recognise your G3. Go to the mobile device menu and select restore upgrade errors. PC Suite should download the latest firmware and install it. You will be back to a factory reset but your G3 will be working again ☺
Click to expand...
Click to collapse
Ok thanks! I'll try this out now and let you know if it works.

jamespat93 said:
Ok thanks! I'll try this out now and let you know if it works.
Click to expand...
Click to collapse
Hit the Thanks button if I helped you out!

saitch76 said:
Hit the Thanks button if I helped you out!
Click to expand...
Click to collapse
I tried to fix the update errors but it said this update is not supported by Mac OS. I don't have a windows PC to use so what can I do now?

I don't have a Mac so not sure if this will work but search the G3 forums for advice on flashing a .kdz firmware directly to your phone. Make sure you find a .kdz that matches your G3 variant i.e. 16 or 32gb. Sorry but don't know if there is a Mac tool to do this. Good luck.

saitch76 said:
I don't have a Mac so not sure if this will work but search the G3 forums for advice on flashing a .kdz firmware directly to your phone. Make sure you find a .kdz that matches your G3 variant i.e. 16 or 32gb. Sorry but don't know if there is a Mac tool to do this. Good luck.
Click to expand...
Click to collapse
Ok thanks I'm gonna try your steps on my friends PC, if it doesn't work then I'll look for advice. Appreciate your help!

jamespat93 said:
Ok thanks I'm gonna try your steps on my friends PC, if it doesn't work then I'll look for advice. Appreciate your help!
Click to expand...
Click to collapse
No worries. Post back if no luck.
---------- Post added at 05:02 PM ---------- Previous post was at 04:43 PM ----------
It might be worth looking here for Mac drivers etc
http://www.mylgphones.com/download-and-install-the-usb-drivers-for-lg-g3-on-windows-and-mac.html

saitch76 said:
No worries. Post back if no luck.
---------- Post added at 05:02 PM ---------- Previous post was at 04:43 PM ----------
It might be worth looking here for Mac drivers etc
http://www.mylgphones.com/download-and-install-the-usb-drivers-for-lg-g3-on-windows-and-mac.html
Click to expand...
Click to collapse
Thanks, Ill check that link out.
I'm finally on a PC and went into download mode but now my phones stuck at 0% doing a firmware update. It says don't disconnect the USB until the process is complete but I think I'm going to have to
When I did click fix software errors it said there were no errors to fix but I don't think I have all the drivers installed yet.
When I try go to download mode it keeps taking me to the firmware update screen and stays at 0%. Also the drivers aren't fully installing on this computer for some reason.

jamespat93 said:
Thanks, Ill check that link out.
I'm finally on a PC and went into download mode but now my phones stuck at 0% doing a firmware update. It says don't disconnect the USB until the process is complete but I think I'm going to have to
When I did click fix software errors it said there were no errors to fix but I don't think I have all the drivers installed yet.
Click to expand...
Click to collapse
Install the LG united mobile driver first then LG PC Suite. Might be useful to reboot the Windows machine after that. Try having PC Suite running when you connect your G3. PC Suite might nag you about being unable to connect to your G3. Just cancel that and select restore upgrade errors. PC Suite should download the latest firmware before it flashes it to your phone. Check that your G3 is in download mode before you connect it to the Windows machine.
I'm assuming you've checked obvious things like turning off any firewall software that might block outgoing connections...

saitch76 said:
Install the LG united mobile driver first then LG PC Suite. Might be useful to reboot the Windows machine after that. Try having PC Suite running when you connect your G3. PC Suite might nag you about being unable to connect to your G3. Just cancel that and select restore upgrade errors. PC Suite should download the latest firmware before it flashes it to your phone. Check that your G3 is in download mode before you connect it to the Windows machine.
I'm assuming you've checked obvious things like turning off any firewall software that might block outgoing connections...
Click to expand...
Click to collapse
Tried those things too...for some reason the pc could only download 2 out of 4 drivers. Also my phone wont let me stay on the download mode screen. It comes up for around 2 seconds then just goes to a firmware update screen.

jamespat93 said:
Tried those things too...for some reason the pc could only download 2 out of 4 drivers. Also my phone wont let me stay on the download mode screen. It comes up for around 2 seconds then just goes to a firmware update screen.
Click to expand...
Click to collapse
What is the OS on the Windows machine?

saitch76 said:
What is the OS on the Windows machine?
Click to expand...
Click to collapse
I tried with windows xp and windows 7. I won't have access to the PC until later, any tips for what I can do on mac? I can't seem to find a mac flash tool.

jamespat93 said:
I tried with windows xp and windows 7. I won't have access to the PC until later, any tips for what I can do on mac? I can't seem to find a mac flash tool.
Click to expand...
Click to collapse
There are drivers and PC Suite for Mac on the LG website. That was all I needed to recover my G3 on my PC. I would try installing the unified drivers and PC Suite again. Start up PC Suite. Put your G3 in download mode and connect it to your Mac.
If that doesn't work and the unified drivers and PC Suite won't install on your friends Windows machine then I would run chkdsk and the system file checker.

saitch76 said:
There are drivers and PC Suite for Mac on the LG website. That was all I needed to recover my G3 on my PC. I would try installing the unified drivers and PC Suite again. Start up PC Suite. Put your G3 in download mode and connect it to your Mac.
If that doesn't work and the unified drivers and PC Suite won't install on your friends Windows machine then I would run chkdsk and the system file checker.
Click to expand...
Click to collapse
I've got the drivers and PC suite for mac but anytime I try to 'fix update errors' a message comes up saying 'cannot run updating. Check device status and retry'. Then when I update the suite to the latest version, the 'fix update errors' option disappears from the menu. Ok I'll try those out on my friends PC when I have the chance.

jamespat93 said:
I've got the drivers and PC suite for mac but anytime I try to 'fix update errors' a message comes up saying 'cannot run updating. Check device status and retry'. Then when I update the suite to the latest version, the 'fix update errors' option disappears from the menu. Ok I'll try those out on my friends PC when I have the chance.
Click to expand...
Click to collapse
Are you selecting Restore Upgrade Errors?

saitch76 said:
Are you selecting Restore Upgrade Errors?
Click to expand...
Click to collapse
well on my mac it comes up as
View attachment 2891684
and when I click it this message comes up
View attachment 2891685

fixed it!
I finally fixed it! In the end I had to flash a stock rom to my phone, that's the only thing that would work. Again, thanks for all your help!

jamespat93 said:
I finally fixed it! In the end I had to flash a stock rom to my phone, that's the only thing that would work. Again, thanks for all your help!
Click to expand...
Click to collapse
Cool. V10g firmware seems to fix a number of issues.

jamespat93 said:
I finally fixed it! In the end I had to flash a stock rom to my phone, that's the only thing that would work. Again, thanks for all your help!
Click to expand...
Click to collapse
please help me!!! , i have the same problem
1. you wrote
"Tried those things too...for some reason the pc could only download 2 out of 4 drivers. Also my phone wont let me stay on the download mode screen. It comes up for around 2 seconds then just goes to a firmware update screen. "
i have the same problem, which os system you flash the stock rom? windows 7? i have win 7.
how do you installed the missing drivers ? 2 of 4 drivers?
2. can you give me please the link to the rom stock and to the relevant software?
3. hot you flash the stock rom ? which software?
2. can you explain in detail what is the Installation steps? [when to connect the phone, which software, what need to see on the software)
thanks a lot

[Q] [H] LG D855 Bricked - No download mode / no recovery :crying:

When I boot my device no shows LG logo and does not come into download / recovery mode :crying:
any idea to fix it?

AnDyZ-BR said:
When I boot my device no shows LG logo and does not come into download / recovery mode :crying:
any idea to fix it?
Click to expand...
Click to collapse
What does it say when you plug it into the computer?
QHUSB_BULK?

I guess the better option is to try using LG flash tool to flash kdz, not sure if download mode will be booted since you mentioned download mode failed.
If none really work then should consider restoring stock rom using LG pc suite

Am I correct in saying the phone simply does not boot into download mode? You have have the phone off, hold + or - and plug USB in?

itsbighead said:
What does it say when you plug it into the computer?
QHUSB_BULK?
Click to expand...
Click to collapse
yes, say QHUSB_BULK
XPS_93 said:
I guess the better option is to try using LG flash tool to flash kdz, not sure if download mode will be booted since you mentioned download mode failed.
If none really work then should consider restoring stock rom using LG pc suite
Click to expand...
Click to collapse
does not work LG flash tool / LG PC suite" without the download mode!
drolgnir said:
Am I correct in saying the phone simply does not boot into download mode? You have have the phone off, hold + or - and plug USB in?
Click to expand...
Click to collapse
yes and yes =/

May I ask how did you brick it?

hey guys, I repaired using this method ....
http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091
and
http://forum.xda-developers.com/lg-g3/general/fix-unbrick-lg-g3-stuck-qualcomm-hs-usb-t2933853
i flash my rom using TWRP recovery
thank you xda users

asking for help
Hello!
I would like to ask you, that can you maybe help me with my LG G3 (D855) (16GB). I live in Europa, Hungary
I bought the device as used, and i would have liked to download the latest software via wifi, then on the phone restarted, and was only the TWRP on the phone, i restarted the device again, but i could entry only in the TWRP. I downloaded a ROM from the XDA, and i made a mistake, i installed the D851 software. The phone is bricked, no download mode. I tryed to unbrick, but every method need the download mode. If i put the device on the PC, the PC see only as modem. LGE AnroidNet USB modem, and the the port name LGE AnroidNet USB Serial Port Com4. If the battery is low, i see on the display, that show that need to charge, but nothing more life signal. If you can help me with some information and with files or via teamviewer, i will glad for you, and also donate. i think i have the correct TOT file, and the DLL file.
LGD855AT-00-V10k-234-30-VUK-SEP-03-2014-16G+0.tot
LGD855_20140526_LGFLASHv160.dll
I downloaded a program "BoardDiag3.99c.zip". but this program ask the BIN file, i found another program b2b.exe, that ask the TOT file at the extraction. Maybe that's is same?
As i wrote the PC sees my phone only as modem, and LGE AnroidNet USB Serial Port Com4. I dont know what is "Qualcomm HS-USB QDLoader 9008 mode", i dont see in the port menu. I hope that You, or someone can help me. i downloaded the QDLoader HS-USB Driver, but again show only the "LGE AnroidNet USB Serial Port Com4" (or now this is com41, i wanted to try a method, but need the download mode) Sorry for the bad english.
Have a nice day!

i have the same issue
AnDyZ-BR said:
hey guys, I repaired using this method ....
http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091
and
http://forum.xda-developers.com/lg-g3/general/fix-unbrick-lg-g3-stuck-qualcomm-hs-usb-t2933853
i flash my rom using TWRP recovery
thank you xda users
Click to expand...
Click to collapse
Please give a step by step tutorial since l cant seem to figure out how you solved the issue

Stuck in download mode.

Help!! Please I tried to flash official lollipop F240L30c_00.kdz on my F240L but when I clicked ok, it verifies windows then says that "Connection to server failed. Try again in a moment.”
I dont know what to do, my phone only now boots into download mode I’m scared, please help. I did all the steps (Ithink).
HELP :”
<My phone boots up only in DOWNLOAD MODE even i dont press vol up + vol down then connect the usb to pc.
Please help me! I really need help!

just now. im stuck in 27% in LG Mobile Support Tool.
helppppp. i dont know what to do .

Use LG Flash tool and before starting disconnect from internet. Steps:
install lg drivers
enter to download mode (turn off, push vol up&down and plug usb)
copy kdz file into LG flashtool folder
disconnect internet
run lg flashtool (needs visual c++ runtime library), CDMA/diag/33000 click CSE Flash
no need to change language, wait until 100%

edddG said:
Help!! Please I tried to flash official lollipop F240L30c_00.kdz on my F240L but when I clicked ok, it verifies windows then says that "Connection to server failed. Try again in a moment.”
I dont know what to do, my phone only now boots into download mode I’m scared, please help. I did all the steps (Ithink).
HELP :”
<My phone boots up only in DOWNLOAD MODE even i dont press vol up + vol down then connect the usb to pc.
Please help me! I really need help!
Click to expand...
Click to collapse
If you get that warning, don't click or close that warning, the flasing is still running.
I always get it when flasing kdz on my F240L so I'm sure about that.
Sent from my LG-F240L using Tapatalk

irt118 said:
If you get that warning, don't click or close that warning, the flasing is still running.
I always get it when flasing kdz on my F240L so I'm sure about that.
Sent from my LG-F240L using Tapatalk
Click to expand...
Click to collapse
ahhhm. i dont get that warning again. im facing it stuck in 27% at "S/W Upgrade is in process" it took so long. it takes 30minutes and still not moving . what would i do ?
Sorry for my bad english

pckoloji said:
Use LG Flash tool and before starting disconnect from internet. Steps:
install lg drivers
enter to download mode (turn off, push vol up&down and plug usb)
copy kdz file into LG flashtool folder
disconnect internet
run lg flashtool (needs visual c++ runtime library), CDMA/diag/33000 click CSE Flash
no need to change language, wait until 100%
Click to expand...
Click to collapse
okay thankyou for reply. . let me try this.

edddG said:
ahhhm. i dont get that warning again. im facing it stuck in 27% at "S/W Upgrade is in process" it took so long. it takes 30minutes and still not moving . what would i do ?
Sorry for my bad english
Click to expand...
Click to collapse
Have you tried another usb port and cable? Also try cse flash.
Sent from my LG-F240L using Tapatalk

irt118 said:
Have you tried another usb port and cable? Also try cse flash.
Sent from my LG-F240L using Tapatalk
Click to expand...
Click to collapse
not yet sir. i only have one usb cable .

irt118 said:
Have you tried another usb port and cable? Also try cse flash.
Sent from my LG-F240L using Tapatalk
Click to expand...
Click to collapse
same issue with me. I got stucked at 25 percent. It was on jb tried to flash kitkat it stucked on download mode now. Any solution. I change usb cable but same response. May be tot can sort it out but no working link for f240s

USB device not recognized (help!)

usb otg suddenly isn't working anymore on my G4. so i figured a factory reset could fix it but to no avail. my last resort is to use LGUP and flash v10c but the problem
now is that my computer (windows 10) and may laptop (windows 7) won't detect my G4. but when i connect my S3 it works just fine. is there any fix on these? already tried uninstalling and re-installing usb driver.
please help!

urinamess said:
usb otg suddenly isn't working anymore on my G4. so i figured a factory reset could fix it but to no avail. my last resort is to use LGUP and flash v10c but the problem
now is that my computer (windows 10) and may laptop (windows 7) won't detect my G4. but when i connect my S3 it works just fine. is there any fix on these? already tried uninstalling and re-installing usb driver.
please help!
Click to expand...
Click to collapse
usb? 2.0 3.0? 3.0 dont work.. use 2.0 usb port.
so download mode does not work.?

raptorddd said:
usb? 2.0 3.0? 3.0 dont work.. use 2.0 usb port.
so download mode does not work.?
Click to expand...
Click to collapse
my flash drive is usb 3.0, it is working before on my G4.
also, i tried different ports on my computer still won't recognized my G4. i even tried it just now on my pc at work, same results with my pc at home. when i connected my G4 on the pc it only charges..

urinamess said:
my flash drive is usb 3.0, it is working before on my G4.
also, i tried different ports on my computer still won't recognized my G4. i even tried it just now on my pc at work, same results with my pc at home. when i connected my G4 on the pc it only charges..
Click to expand...
Click to collapse
i think a back to stock might fix it if it enters download mode.... i think thats the only hope ..

urinamess said:
usb otg suddenly isn't working anymore on my G4. so i figured a factory reset could fix it but to no avail. my last resort is to use LGUP and flash v10c but the problem
now is that my computer (windows 10) and may laptop (windows 7) won't detect my G4. but when i connect my S3 it works just fine. is there any fix on these? already tried uninstalling and re-installing usb driver.
please help!
Click to expand...
Click to collapse
This is a very common issue people usually get when the flash a certain custom rom ...with rom comes in kernel also...after flashing stock rom flash stock kernal...this issue will be resolved

raptorddd said:
i think a back to stock might fix it if it enters download mode.... i think thats the only hope ..
Click to expand...
Click to collapse
it can still enter download mode, but unfortunately there is no connection between my PC and my G4. same error pops up
jinderation said:
This is a very common issue people usually get when the flash a certain custom rom ...with rom comes in kernel also...after flashing stock rom flash stock kernal...this issue will be resolved
Click to expand...
Click to collapse
but i havent flash any rom on my g4 as my unit is bootloader locked
also, i have tried usb host check app with the results as follows.
android.hardware.usb.host.xml
ok
handheld_core_hardware.xml
USB host not enabled
tablet_core_hardware.xml
not found
could the missing xml's be the culprit??

urinamess said:
it can still enter download mode, but unfortunately there is no connection between my PC and my G4. same error pops up
but i havent flash any rom on my g4 as my unit is bootloader locked
also, i have tried usb host check app with the results as follows.
android.hardware.usb.host.xml
ok
handheld_core_hardware.xml
USB host not enabled
tablet_core_hardware.xml
not found
could the missing xml's be the culprit??
Click to expand...
Click to collapse
U must have a usb connection in download mode ?? Have u tried connecting it ? also are u using stock cable of lg white colored ?

This one

I have the same problem with my G4. It works before but suddenly not working anymore. I will guest it is the charging port of the phone is broken. It can charging the battery but cannot connect/transfer files with PC.