I've got an LG G3 by US Cellular (US990) that I'm trying to downgrade using LG Flash Tool. The problem is that it's not being recognized by Flash Tool or by LG PC Suite for some reason. When I plug it in in normal Android it recognizes it whether it be charging, MTP or PTP. But when I go into download mode these programs do not recognize it and so I can't flash anything. Anyone had any similar problems or anything I can try? I have installed the drivers multiple times and I'm on Windows 7 64 bit. Any help or suggestions are greatly appreciated, thanks!
Willieumm said:
I've got an LG G3 by US Cellular (US990) that I'm trying to downgrade using LG Flash Tool. The problem is that it's not being recognized by Flash Tool or by LG PC Suite for some reason. When I plug it in in normal Android it recognizes it whether it be charging, MTP or PTP. But when I go into download mode these programs do not recognize it and so I can't flash anything. Anyone had any similar problems or anything I can try? I have installed the drivers multiple times and I'm on Windows 7 64 bit. Any help or suggestions are greatly appreciated, thanks!
Click to expand...
Click to collapse
Have you changed the com port yet? If not, set it to 41.
No I haven't, how would I go about doing that?
hack14u said:
Have you changed the com port yet? If not, set it to 41.
Click to expand...
Click to collapse
Okay I was able to find and change that to 41 but no luck..
Got the right drivers? Would assume so just checking
Sent from my LG-D855 using XDA Free mobile app
Related
I tried to flash latest 10L firmware, but I always get the messages Problem with communication between cell phone and PC. I did everything as instructed, selected Normal flash, but it won't work. I installed needed drivers, but when I reboot to Downloading mode, there is Exclamation sign in device manager. What could be the problem?
Did you change the port to com41?
Also are you using windows 8? If you are you need to disable signature verification.
I don't know how to change port to com41. I am using Windows 7.
TwinHeadedEagle said:
I don't know how to change port to com41. I am using Windows 7.
Click to expand...
Click to collapse
It's in the guide that you said you followed. Open your device manager in windows and right click on the lg device that shows up. Next hut advanced and change the port to com41 and then click ok.
I did that, and it still shows the same message.
Bump
Sent from my LG G3 using Tapatalk
TwinHeadedEagle said:
I tried to flash latest 10L firmware, but I always get the messages Problem with communication between cell phone and PC. I did everything as instructed, selected Normal flash, but it won't work. I installed needed drivers, but when I reboot to Downloading mode, there is Exclamation sign in device manager. What could be the problem?
Click to expand...
Click to collapse
Hi did you fix it?
I encountered the same problem. Thanks.
I didn't fix it, problem is still there.
Sent from my LG G3 using Tapatalk
Please state the exact link to the guide you're using, your phone model number and windows version.
Thanks for responding.
I tried to follow several guides, but none of them works.
I think I tried this one first --> http://forum.xda-developers.com/showthread.php?t=2785089
LG G3 International 32gb D855
v10i currently installed
Phone rooted with Bump TWRP
Bump.
Did you install the latest LG drivers for your phone? I don't know why this didn't occur to me earlier but that plays a big part in the PC seeing your phone.
Yes, I have driver. PC Suite works, everything works, but Flash tool doesn't.
Sent from my LG G3 using Tapatalk
Could this be connected with bump twrp. Maybe it is blocking this somehow.
Sent from my LG G3 using Tapatalk
Problem solved, I was using different PC and it worked
TwinHeadedEagle said:
Thanks for responding.
I tried to follow several guides, but none of them works.
I think I tried this one first --> http://forum.xda-developers.com/showthread.php?t=2785089
LG G3 International 32gb D855
v10i currently installed
Phone rooted with Bump TWRP
Click to expand...
Click to collapse
You've got to boot into download mode and then use the LG FLash Tool 2014. There's one error stating there is an error with a connection, just ignore it and watch your phone screen! If it tells you stuff like the current version and the version it is about to install, just let it sit and wait till it reboots automatically.
The reason I am saying is because you say "Problem with communication between cell phone and PC" and it looks like the error that is supposed to show up.
Could you please re-do the process, maybe re-install the LG drivers and use LG FLash Tool again. If you encounter any error either make a screenshot or type the EXACT error message in here.
Good luck
I solved the problem.
Sent from my LG G3 using Tapatalk
For all who is experiencing the same thing problem is in 64bit OS but it is not a rule. People reported that they were succesfully flashed their devices on win7 x64. If you want to be sure use x86 windows and it should be working.
lg g3 d855 is frozen on boot screen.
i tried to use the official lg mobile support tool but it keeps saying that the phone is not connected to pc.
when i try to use the other flash tool from this site http://forum.xda-developers.com/showthread.php?t=2799647
i cant get the driver to load on to two of the windows laptops i used.
i tried all three lgunitedmobiledriver ver 3.11 ver 3.10 ver 3.12 from lg.
i just cant get the COM & LPT ports to show.
i have tried manually adding com ports through windows using Hdwwiz and do get com port but not LGE mobile usb serial port.
what else can i try? how is a person supposed fix their phone when a problem like this happens. i only have one windows netbook that i spent 5 hours yesterday and today tried it on a friends laptop but still the same result.
thank you for your input.
stealthster said:
lg g3 d855 is frozen on boot screen.
i tried to use the official lg mobile support tool but it keeps saying that the phone is not connected to pc.
when i try to use the other flash tool from this site http://forum.xda-developers.com/showthread.php?t=2799647
i cant get the driver to load on to two of the windows laptops i used.
i tried all three lgunitedmobiledriver ver 3.11 ver 3.10 ver 3.12 from lg.
i just cant get the COM & LPT ports to show.
i have tried manually adding com ports through windows using Hdwwiz and do get com port but not LGE mobile usb serial port.
what else can i try? how is a person supposed fix their phone when a problem like this happens. i only have one windows netbook that i spent 5 hours yesterday and today tried it on a friends laptop but still the same result.
thank you for your input.
Click to expand...
Click to collapse
You need to put your phone into download mode, once there, plug it into the computer. From there you should be able to flash.
If not then, see below.
I had the same issue, couldn't get past bootscreen, and downloadmode wasen't available for me either. I had to send it back to get repaired, they replaced the motherboard which gave me a new imei.
moblaw said:
You need to put your phone into download mode, once there, plug it into the computer. From there you should be able to flash.
If not then, see below.
I had the same issue, couldn't get past bootscreen, and downloadmode wasen't available for me either. I had to send it back to get repaired, they replaced the motherboard which gave me a new imei.
Click to expand...
Click to collapse
yes i am able to get in to download mode. same result.
even tried doing the factory reset through the phone with vol - but once it goes to the boot screen it stays there.
What windows version you running!?
Sent from my LG-D855 using XDA Free mobile app
netbook is xp
and laptop is windows 7
You tried installing the lg PC suite drivers come with it can't think why they wouldn't work.
Edit try the guide in the general section about going back to stock worked for me when I had a soft brick -- http://forum.xda-developers.com/showthread.php?t=2785089
Sent from my LG-D855 using XDA Free mobile app
yes i tried those drivers and they dont show up on device manager.
would the problem be at the charging port? as no connection to the computer caused by a faulty usb port not working?
is their any way for me to check if that is the case?
I followed the instructions to the T. I installed the drivers, changed theport to COM41 on the LGE AndroidNet USB Serial Port, downloaded the stock rom and DLL and everything is fine until i unplug then plug back in. Nothing happens. No Waiting for Connection message, nothing. Trying to fix a boot loop!
Tried doing the KDZ method, errors out at 4% and now I'm without a phone unless I can figure this issue out. No flashing is working what so ever.
What carrier are you on?
It's a Sprint variant.
I have the Sprint and it wasn't working because I had pressed Upgrade DL and not Board DL. Try that otherwise I don't know what's wrong.
Sent from my LGLS990 using XDA Free mobile app
Already tried that.
Does it go to the firmware update screen?
Sent from my LGLS990 using XDA Free mobile app
Make sure that your com port is still set at 41. When I had this issue I fixed it by going into device manager while LG flashtool was running (after plugging the micro usb back in to my phone) and changing the com port to any other port then right back to 41 and the flash tool started working. I don't know if it will help or not, but it worked for me.
Are you using windows 8? If so you need to disable driver signature enforcement ( can't post links, but google it ). Or like i did use a computer with windows 7 .
I had windows 8 and it worked just fine.
Sent from my LGLS990 using XDA Free mobile app
GeneticFusion said:
I followed the instructions to the T. I installed the drivers, changed theport to COM41 on the LGE AndroidNet USB Serial Port, downloaded the stock rom and DLL and everything is fine until i unplug then plug back in. Nothing happens. No Waiting for Connection message, nothing. Trying to fix a boot loop!
Click to expand...
Click to collapse
Hope you got your issue fixed mate! If not.. while the phone is in Download mode, restart your pc with the phone plugged into the computer.. after your computer reboots, reinstall all drivers and adjust the port to COM41 under Device Manager.. then run the LG Flash Tool again.. It's just a simple but very annoying connection problem... Good luck :good:
I'm in a bit of a pickle...
Phone is dead, I'm unable to wake it using any method, however PC sees the device being connected. I have tried to restore TWRP backup which was completed correctly but then phone stuck and failed to wake up again. I have tried to unbrick it using the LG flash tool and dll +tot files however this method fails each time -with factory model check error - and download fail notification. Right now im waiting for kdz file to download (im using the tool checking my imei to select correct one) but it takes ages with my internet.
Anyone has any ideas? Am i doomed?
Hi
Happened to me also. I got out of it by using LG flash tool and clicking on options and selecting restore recovery. It puts it back to stock and you then need to reroot etc.
Stransky
Sent from my Desire 816 using Tapatalk
Stransky said:
Hi
Happened to me also. I got out of it by using LG flash tool and clicking on options and selecting restore recovery. It puts it back to stock and you then need to reroot etc.
Stransky
Sent from my Desire 816 using Tapatalk
Click to expand...
Click to collapse
Options? On mainstream there isn't any. Is it on the 2nd screen after adding the kdz?
Current progress
Phone:
No download mode
No boot on the phone
Device acts dead - only visible on my pc (serial port LGE)
PID and IMEI not available to read using LG flash tool 2014
Tried
Loading KDZ file - connection failed
using tot and dll with flash tool - Failed to connect to device
Read something about laf.img using adb... Anyone has any other ideas? Funny enough when I was searching forums I was not able to find more info about cases when device is not waking up at all. but now i see few very similar threads around? Possible flaw somewhere?
Please take a SC of your device manager...
ScAvEnGeR(PHC) said:
Please take a SC of your device manager...
Click to expand...
Click to collapse
Here you go:
https://drive.google.com/folderview?id=0B-PcKi2bLtK_X2RyZGNxdXBHVnM&usp=sharing
thanks!
(actually android device is gone now from the list - it was visible when i was installing the drivers - strange?)
quintaar said:
Here you go:
https://drive.google.com/folderview?id=0B-PcKi2bLtK_X2RyZGNxdXBHVnM&usp=sharing
thanks!
(actually android device is gone now from the list - it was visible when i was installing the drivers - strange?)
Click to expand...
Click to collapse
Thank God it is showing a serial port, try flashing with LG tools 2014, let me find a fix for your download error...
EDIT: Is your phone by any chance plugged into a usb 3.0 port? If yes then please plug it in a usb 2.0 port and try again...
I hope you are right. Screens hots should be updated same link:
https://drive.google.com/folderview?...nM&usp=sharing
Laptop has no usb3.0 so im safe there. Tried 3 cables as well. Not sure what was it shown it was I think Android device but it is no longer there. Just the com port. Lge
@quintaar
Sorry my bad. I should have said LG Mobile support tool. If you have it click on the options and select Upgrade recovery.
Stransky
Sent from my LG-D855 using Tapatalk
Stransky said:
@quintaar
Sorry my bad. I should have said LG Mobile support tool. If you have it click on the options and select Upgrade recovery.
Stransky
Sent from my LG-D855 using Tapatalk
Click to expand...
Click to collapse
It might be the PC (work pc at the moment and some IT limitations on it) however drivers installed ok, software confirms that I have latest software on my device - when phone is connected to the pc. After running Recovery Upgreade, it gets problem with comunication between the pc and mobile. in troubleshooting asks to power on the mobile (which I cannot do) before retrying. Also I have installed LG usb driver from outside as options coming with this software seem to be for really old models?
A thing I tried with another G3 was to connect the phone to the PC without the battery and then insert the battery, disconnect from phone and then remove battery again then insert and hold volume up and connect the USB to the phone again and it went into download mode and allowed the use of LG support tool as before.
Its worth a try!!
Stransky
Sent from my LG-V500 using Tapatalk
Stransky said:
A thing I tried with another G3 was to connect the phone to the PC without the battery and then insert the battery, disconnect from phone and then remove battery again then insert and hold volume up and connect the USB to the phone again and it went into download mode and allowed the use of LG support tool as before.
Its worth a try!!
Stransky
Sent from my LG-V500 using Tapatalk
Click to expand...
Click to collapse
No dice... so far. I'm back home in 2 days when i can try all of this again making sure that PC is not restricted from any functionality... although it does sucks to not to have a phone until then. If you get any ideas I'm happy to try it as well.. as not like i have anything to lose at this point.
Hi folks,
I want to restor my LG G3 D851 phone to stock using lg flash tool to kdz/tot but i can't because my computer is not registering my device while in download mode (new device connection does not pop up, like if the device wasn't connected to the PC). Also, there is no sign of the device under device manager, so i don't know what to do. Any help is highly appreciated. I already tested with different driver versions and different cables with no luck.
Please, somebody help me!
Same issue
carlos0202 said:
Hi folks,
I want to restor my LG G3 D851 phone to stock using lg flash tool to kdz/tot but i can't because my computer is not registering my device while in download mode (new device connection does not pop up, like if the device wasn't connected to the PC). Also, there is no sign of the device under device manager, so i don't know what to do. Any help is highly appreciated. I already tested with different driver versions and different cables with no luck.
Please, somebody help me!
Click to expand...
Click to collapse
Hi, OI am having exactly the same problem. I've done it dozens of times. In my LG G3, and in many other phones. But suddenly, after a factory reset, my international LG G3 refuses to connect to my PC, both in download mode and when it´s on. No sound from the PC. Anyone any ideas? Thanks