LG Optimus L9 stuck at factory reset - LG Optimus L9 P760, P765, P768, P769

Hi all
Recently, my optimus L9 (the P760), has started to get popups saying ''the process com.android.phone has stopped."
This started when I turned on my phone and suddenly I got pop-ups of multiple apps and processes being stopped.
Then the phone was suddenly off, without having given any kind of warning that it was going to turn off..
Then I restarted it, it got stuck on the LG logo for a while (didn't count, was about 1-5 mins) and then it said 'Encrypting' (under which I can see something I presume is a loading bar, but it's not loading) And under Encrypting, it has a button which says 'Reset phone', which won't work. I've tried it several times, restarted the phone (which also took 1-5 mins) several times, and have looked for solved threads about this on xda, as well as other forums..
There have been several threads like this, but none seems to be solved. That is the reason why I open this new thread.
My pc won't recognize the lg when I try connecting it either.. Nothing seems to be able to fix this, but my warranty has passed due to it being older than 2 years..
I really hope you guys can help me, thanks a lot!
Patrick

The final production run of L9s featured an encrypted bootloader, phones manufactured in 2013, if bought until early '13 this cannot be the case.
Anyway this means the phone is bricked, if you did not activate Android' s encryption feature.
The LG recovery tool should ve able to fix it in download mode. There are driver problems under Windows 8&10, but download mode should work and is also the final option before sending it in or dumping it.
For download mode switch phone off, then press Vol- while plugging the phone in and wait until it switches on by itself. Activating download mode after an off-on-off sequence seems to help when even download mode doesn't work as supposed. Seems to do the same as taking out the battery in between tries.

This was the last issue I had before my p760 got trashed by this tool http://forum.xda-developers.com/showthread.php?t=2748384 I wish you luck though.

There's various driver issues in the various connection modes the phone can assume.
First there's more trouble with Windows newer than Seven. This affects Fastboot and generally the recognition under Windows. And with a custom rom the LG drivers may not recognize the phone, thus all LG tools will fail too.
Best support is gained with two sets of drivers installed: LG usb drivers and Google SDK usb drivers.
With Artas' CM11, the Google drivers provided support for non-LG tools and ADB commands. The LG drivers only recognized the phone in Download mode and were necessary for unbricking it, as all tools for flashing KDZ files are based on LG's own tool, which needs the LG drivers.
The driver installation is less difficult on Win10 compared to 8.1, run the setup to install both ones.
On Win8.1 you may have to manually assign the Google drivers after their installation in device manager, they' re either found in the Android Phone category or the ADB interfaces one, while the LG ones sit invisible(!) in the other category(phone not recognized, remember?), but the phone recognition will be triggered by attaching it in download mode, and a virtual COM port will be installed.
Hopefully this was confusing, weird and silly enough, but if you manage to get it right, unbricking the phone is still quite possible.

Related

Bit of a problem with rooting

Hi all. So I just picked up a Verizon Note 2 today and happily looked forward to rooting it. I'm on 4.1.2 Jellybean VRAMC3, model number SCH-I605. I'm afraid I may have messed something up.
I had downloaded Odin and installed the Samsung USB drivers and all that good stuff. Odin picked up the phone and all that, but a bit more looking around seemed to indicate that the usual Odin method of rooting wouldn't work on the latest version that I had.
So I downloaded the CASUAL installer and got that to run. It ran through the install, rebooted the phone, and then said it was waiting for Windows to recognize the device again so that it could continue with the install.
At that point, Windows informed me that a driver install had failed and the CASUAL install did not proceed any further, despite waiting a good 5-10 minutes.
Since doing this, the phone has had bizarre USB connection issues. Odin and Kies do not read the phone at all. Plugging the phone in brings up an additional drive for about two minutes with a Verizon Assistant Manager EXE, a USB Drivers EXE, and a couple other things, then it disappears.
The phone will often display a message informing me "Unable to find software on your PC that can recognize your device." This happens regardless of being in USB Debugging mode or not.
I've tried uninstalling and reinstalling several versions of Samsung's drivers as well as Kies. I also tried a factory reset on the phone itself, but these connectivity issues (and accompanying warning messages) persist.
Not sure how to proceed from here and would love a bit of help. Thanks!
Additional notes: All normal functions of the phone are working fine, and the computer DOES detect the phone as a "Samsung Android Device", but as stated Odin and Kies are not able to detect/connect with it.
Update: Messed with drivers a bit more and Odin will now pick up the phone again. When the phone disappears as a "drive" with install helper stuff, it reappears as a portable device, and I can browse the innards of the phone to put music and other stuff on it. CASUAL however still does not pick up the phone.

[Q] LG P769 Security Error (Using Win8.1

I have searched (I have 12 tabs open as I type) these forums. I see a few similar cases but I am not finding a solution. I have use CMHENDRA's guides but I am having no luck. (It is my daughters phone so I will give you what information I know) BTW, I contribute in the Note II galleries, I have rooted and flashed HTC One X, Several Nexus 7's, my Note II, Galaxy SII, Galaxy S, HTC Sensations, Nexus 4 and a few older ones. I can currently see all those phones on my laptop. Not the L9.
I believe my son tried to flash CWM for my daughter. She is notoriously rough on phones and he was trying to make sure she was protected. The phone boots into the LG Security Error screen. I can get it to boot into S/W Upgrade mode. I have completed or can complete all the steps to most of the guide. I CANNOT get my Win8.1 laptop or my sons Win7 laptop to recognize the phone to complete any of the guides. B2C, Fastboot, etc. I can see various entries in the Device Manager, I uninstall and reinstall with Driver Signing turned off. I have now reached the point where I have done so many things that I have probably confused myself.
When it did get the security error, the software had been set to USB Debugging and Unknown Sources was allowed. The firmware was 20H. B2C cannot get the phone information (I know it is probably the drivers as is everything else).
Any help, ideas, etc. would be great. I would love to be a hero for my daughter.
dsore1218 said:
I have searched (I have 12 tabs open as I type) these forums. I see a few similar cases but I am not finding a solution. I have use CMHENDRA's guides but I am having no luck. (It is my daughters phone so I will give you what information I know) BTW, I contribute in the Note II galleries, I have rooted and flashed HTC One X, Several Nexus 7's, my Note II, Galaxy SII, Galaxy S, HTC Sensations, Nexus 4 and a few older ones. I can currently see all those phones on my laptop. Not the L9.
I believe my son tried to flash CWM for my daughter. She is notoriously rough on phones and he was trying to make sure she was protected. The phone boots into the LG Security Error screen. I can get it to boot into S/W Upgrade mode. I have completed or can complete all the steps to most of the guide. I CANNOT get my Win8.1 laptop or my sons Win7 laptop to recognize the phone to complete any of the guides. B2C, Fastboot, etc. I can see various entries in the Device Manager, I uninstall and reinstall with Driver Signing turned off. I have now reached the point where I have done so many things that I have probably confused myself.
When it did get the security error, the software had been set to USB Debugging and Unknown Sources was allowed. The firmware was 20H. B2C cannot get the phone information (I know it is probably the drivers as is everything else).
Any help, ideas, etc. would be great. I would love to be a hero for my daughter.
Click to expand...
Click to collapse
I can't get mine to work either. Closest thing I've gotten is using omap4boot-for_optimus-v1.21
its different from some of the others, in that its a blue background and it doesnt actually list the p769. However, after selecting option 5, and following onscreen instructions, I was able to get my front capacitive buttons to light up, but nothing else. I can't enter S/W upgrade mode, I can't get LG recovery tool to recognise my phone, I am absolutely **** out of luck. I dont know if using omap4boot-for_optimus-v1.21 will help or hurt you, but im just explaining my experiences.
Have you installed the omap driver for fastboot?
Thanks for your replies. Windows 8.1 is installing the OMAP driver and when I try to update it, Windows says it has determined that I have the best one installed already or some BS like that. That seems to be the last piece of the puzzle. I am not getting it to use the fastboot commands and when I am in the LG upgrade thing, it cannot connect on the first of the three calls so it says to check the USB cord and connection. ( I have tried 5-6 cords including the OEM cord ).
Thanks again for your help. I will uninstall the OMAP drivers when I get home and see if I can't get the ones I downloaded to install.
I don't have Windows 8.1 so I'm not sure how to address the driver issue. I reer as wel.commend you uninstall the driver, both of them. The one under Android Phone in the device manager and the one called TI Boards in the device manager.
1. Uninstall all OMAP drives (Two of them)
2. Disconnect from the internet (to preventing Windows update from selecting its own driver.
3. Follow steps to fastboot. When connecting your phone have device manager open and right click the device that is flashing on and off (you will see the device manager refreshing and stuffs. It will dissappear after about two seconds but if you get the right click in and the option to install the driver, do it, point to the fastboot driver.
4. Disconnect phone after driver install and pull the battery.
5. Fastboot again, using option 1.
6. Quickly install same driver on the new device in device manager. Be quick.
7. Disconnect, Pull battery
8. Fastboot again
9. Flash ICS U and X
10. Make sure your LG drivers are installed.
11. Reboot PC.
12. Now you should be able to get into SW UPGRADE MODE with the plugging in of the USB
Should not lock up at 15%, make sure you have drivers installed for this.
13. Should work and reboot to home screen automatically.
14. If you really must, fastboot again and install JB U and X
dsore1218 said:
Thanks for your replies. Windows 8.1 is installing the OMAP driver and when I try to update it, Windows says it has determined that I have the best one installed already or some BS like that. That seems to be the last piece of the puzzle. I am not getting it to use the fastboot commands and when I am in the LG upgrade thing, it cannot connect on the first of the three calls so it says to check the USB cord and connection. ( I have tried 5-6 cords including the OEM cord ).
Thanks again for your help. I will uninstall the OMAP drivers when I get home and see if I can't get the ones I downloaded to install.
Click to expand...
Click to collapse
I've heard fastboot (and several other programs) aren't working on Windows 8. You need windows 7
Sent from my LGMS769 using XDA Premium 4 mobile app

sticks to the logo of the operator.

Hi all, I introduce myself, I am Franco Paladini, First Son.
Well let's get my phone will not turn on, (on but not quite, sticks to the logo of the operator) can not have it connected to the PC, which is the worst.
I commented as was my dear LG L9:
Windows :8.1 pro
Phone: LG P778G (P768 board)
ROM: Stock JB (V20B Personal Argentina)
Kernel: Stock
Root: Yes
It all started when you activate or re-activate a tweak to the "Android Tweaker 2" application. Previously it had already activated some as battery life, performance, multimedia, etc. All tested walked 10 points. But I happened to go over those who had already turned and noticed that some had not been activated, immediately afterwards the turn, I remember that was the voltage Flash, JPEG quality, and I think that caused the problem persistence hw ui. This caused the restart not pass the logo of the operator. I am no expert on the subject but not a rookie, I thought it would be easy flash, as he had done previously with other devices, and with this also but had flashed with the device running all ok. Now the problem is that the computer does not recognize my phone, or cell phone does not connect well with pc. When I plug in download mode (SW / UPGRADE) does not install any driver. When I plug in recovery mode (stock not cwm not TWRP) some drivers but not the OMAP, only androidnet installed sooner, but soon turned off to not connect ever. Or turning off or restarting anyway connected, please help! Will thank a lot and was investigating several hours and not be able to connect, have reinstalled drivers, have tried different versions but none of them work, I'm desperate, it IS URGENT! I can spend the Device Manager list of windows or what they may.

Hard Reset won't work on LG P769BK

My LG L9 Optimus P769BK (T-Mobile) is stuck on Boot Logo. Hard reset or any other reset procedure in this world does not recover the phone to a normal state.
History:
-I rooted the phone a few months ago in order to get rid of some of the bloatware
-Ever since adware/malware keeps coming which made my wife's life miserable
- I unrooted it but that didn't change anything, the malware now resides within system apps so the misery continues
-The USB drivers are installed and the connection shows three entries in Device Manager
-LGE Mobile USB Modem
-LGE Mobile USB Serial Port
-LGE Mobile Composite USB Device
These are shown only when the phone is in download mode (VolUp + USB Cable In)
The only software that communicates with the phone and recognizes the USB port connected (Com41) is the LG Flash Tool V1.8.1.
Unfortunately this software processes the first 80% successfully until the reset stage after which the phone get stuck at the bootup logo (non-responsive) and never finishes the started flashing process.
I just want to re-flash it with stock ROM for which I downloaded v20h_00.kdz and converted the other required DLL, FLS and BIN files.
I know this is an older model but it was seldom used and I don't want to trash it. Thanks for any response in advance.
PC Desktop: Windows 7, x32, Clean Installation just for this purpose
Update: OMAP driver added
I noticed that I was missing OMAP drivers that are specific for the TI chip this model uses and I did install them. Now the phone has a new entry in Device Manager as Portable Devices where two drives/partitions are listed (F:\ and G:\) These are visible while the phone is stuck on the boot LG logo. The LG Flashing tool still can't continue after the reset at 80% so there is no really any progress yet. Any clue anyone?
Problem solved
I finally solved my problem with LG-P769
I don't know why I couldn't succeed earlier but it turned out using a laptop is a bad idea. I tried Windows XP, Windows 7 and Windows 10. The final solution worked on my desktop with clean Windows 7. The solution was using the trick with Small HTTP server. I don't know why it didn't work earlier but it seems another thread gave me a little bit more details that I missed at the beginning (maybe the server settings)
Anyway, it seems that this phone model was long time forgotten since there was not a single reply to my original post except my two updates so it turned out I was just talking to my self loud, LOL.
Anyway, I would like to thank this forum for most advanced postings regarding the Android branch of cell phones. Regards to whoever found this interesting enough to read.

Lumia 920 completely dead

So i got my friends old Lumia 920 with Windows 8/8.1 installed on it but obviously it's not really used anymore and a lot of apps are already unsupported now. So i thought i'd try and install Android over the Windows OS.
Using WPInternals i flashed the phone with a .ffu file (RM-820 - i think!) that was listed under my phones specifications, used the program to flash the phone but just before it completes i get an error message saying the boot-loader wasn't unlocked properly and now the phone won't switch on, hold a charge or do anything at all. I have tried all button combinations for a soft & hard reset but the phone doesn't respond at all. I managed to get the phone connected to my desktop temporarily in Mass-Storage mode, but then the connection disappears and i can't access it.
I've seen so many posts about this problem and being able to 'flash' it back to normal or repair the issue..
can anybody recommend or explain a technique that would work?
Many thanks!
Hi,
is there any sign of reaction in the device manager, e.g. a Qualcomm_USB device or a Qualcom_COMx port?
Joachim

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