Hello,
I have a vanilla LG G3 (without any carrier branding) which shutted down last night with 37% of battery.
After my first try to reboot it, it stucked at the LG Logo screen. It removed the battery and restarted several times.
Nothing happened. After fully charging the battery,
1. I tried to factory reset the phone: I confirmed the data loss with 2 times "yes" and then it was showing the logo again ... for hours.
2. I tried to boot into download mode , but I only geht some Text:
Fastboot mode started
-- reset --
-- portchange --
-- reset --
-- portchange --
fastboot processing commands
With my pc, I can see the device by typing "fastboot devices" as "???????????? fastboot".
Any idea how to get the device running again?
&me said:
Hello,
I have a vanilla LG G3 (without any carrier branding) which shutted down last night with 37% of battery.
After my first try to reboot it, it stucked at the LG Logo screen. It removed the battery and restarted several times.
Nothing happened. After fully charging the battery,
1. I tried to factory reset the phone: I confirmed the data loss with 2 times "yes" and then it was showing the logo again ... for hours.
2. I tried to boot into download mode , but I only geht some Text:
Fastboot mode started
-- reset --
-- portchange --
-- reset --
-- portchange --
fastboot processing commands
With my pc, I can see the device by typing "fastboot devices" as "???????????? fastboot".
Any idea how to get the device running again?
Click to expand...
Click to collapse
you are in a "hard brick". This happened to me on my droid razr m and I cannot seem to get the software needed to follow directions I found on you tube. every place ive tried to download it from loads me up with malware.. you can try update repair using lg pc suite. also, I ve seen threads were people have brought back there g2 from nasty things like this. you can find them in the phandroid forums under g2-all things rooted and use as a guideline. one method was using unbutu on a flash drive??? Or if you were not rooted just get a replacement from were you bought it or lg. good luck.
ADRIANPG said:
you are in a "hard brick". This happened to me on my droid razr m and I cannot seem to get the software needed to follow directions I found on you tube. every place ive tried to download it from loads me up with malware.. you can try update repair using lg pc suite. also, I ve seen threads were people have brought back there g2 from nasty things like this. you can find them in the phandroid forums under g2-all things rooted and use as a guideline. one method was using unbutu on a flash drive??? Or if you were not rooted just get a replacement from were you bought it or lg. good luck.
Click to expand...
Click to collapse
Okay thanks. I didn't do any flashing/rooting activities. I'll do a replacement with LG.
Related
Edit: I found a solution. I was able to flash the older stock rom back on and was able to root from that installation.
Device: AT&T D850 10d
OS: Android 4.4.2, Kernal 3.4.0, Build KVT49L.D85010f, Software verstion D85010f
I've only had the phone for a couple of weeks, so I'm assuming it has any recent patches which may have caused issue. I've looked around, but I haven't been able to find this exact scenario, though I've found similar for the g2.
I first tried using Towelroot, but got the error that the device wasn't supported and so I searched around and found this tutorial (though I'm just now seeing that it is for T-Mobile devices if that has any bearing). I got down to step 14 at which point the device rebooted but stayed on the Fastboot screen only displaying:
[750] Fastboot mode started
[840] -- reset --
[850] -- portcharge --
[1010] -- reset --
[1010] -- portcharge --
[1220] fastboot: processing commands
and it doesn't progress from here.
Now the device will normal boot just fine, but anytime it boots into the fastboot it will stick at that screen. So if I reattempt the steps of the tutorial, I don't get past step 7 without getting stuck on that screen again. Also, I tried to do a factory reset and when it restarted, it just said "Fastboot mode started".
I've downloaded the files to attempt these tutorials:
- [Guide] LG G3 Stock Firmware (Go Back to Stock)
- Official bootloader unlock procedure from LG AND the one that works for everyone
- How to Unroot/Unbrick LG G3!
but I figured I would hold off until I got some expert input on the situation as I'm not even sure if they would help.
I recently updated my lg G3 ( Google patch update named Aug-18-2015 etc) and it started to malfunction with resets, crashing and eventually got it stuck in boot loop. Then it booted into a green screen that said "demigod crash handler/tz crash" thrice. Instead of a hard reset I decided to using the lg mobile support tool to fix it. During the upgrade recovery my phone went into download mode/firmware update. I could see the progress bar moving and then get stuck and my mobile would switch off. Took out the battery, disconnected and reconnected the phone and tried the process all over again but in vain. I repeated this at least 8 times and eventually gave up. Now my phone is basically useless and only boots into firmware update. Hard reset doesn't work either. Can somebody please help me fix this?
Android version : 5.0
Kernel: 3.4.0
Firmware : v20t-ame-xx
Did you try to unbrick/unroot (there so much video about it) it should fix it
jonnyszt said:
Did you try to unbrick/unroot (there so much video about it) it should fix it
Click to expand...
Click to collapse
I have tried everything available online but nothing works. Im so frustrated atm. :/
Could you enter recovery. Connect your phone into your computer in firewall update and after go on adb and fastboot commends and type adb reboot-recovery
I just got the official update to Marshmallow and I decided to just do it since it is official. It downloaded and then installed. Then it rebooted and showed that "apps are being optimized" screen and after that a bootloop of the lg logo. Rebooting doesnt work only if I take the battery out but afterwards there's still a bootloop. I also didn't do root or anything else to my device. I can not enter download mode or recovery either, but honestly idk if it has worked before.
Can anyone with probably similar experiences help me? Thanks in Advance from Germany
LG G3 D855 16Gb Europe unlocked Marshmallow update boot loop.
PCSE said:
I just got the official update to Marshmallow and I decided to just do it since it is official. It downloaded and then installed. Then it rebooted and showed that "apps are being optimized" screen and after that a bootloop of the lg logo. Rebooting doesnt work only if I take the battery out but afterwards there's still a bootloop. I also didn't do root or anything else to my device. I can not enter download mode or recovery either, but honestly idk if it has worked before.
Can anyone with probably similar experiences help me? Thanks in Advance from Germany
Click to expand...
Click to collapse
I have exactly the same issue. I have a German-bought LG G3 d855 updating this morning to Marshmallow. It is now caught in exactly the same boot loop. I get the LG logo, for a few minutes (the brightness changes during this time) followed by the "Android is updating..." app optimization screen which optimizes my 44 apps before going back to the logo in a constant cycle. Then my 44 apps get optimized yet again, and on it goes. I can't enter recovery, none of the button combinations has any effect. Phone has no mods, and was working fine before this.
Does anyone have any ideas?
Hi,
Similar issue here, my phone updated today (also no root, no mods) and for a couple of hours everything worked fine (just some missing apps after the process, but ok), then I went to flight mode and back and then it started with the reboot loops.
The reboots on my phone happen after some seconds in the home screen, so I have time to try to set it in flight mode again, and in some cases, after this it stops rebooting, but in flight mode, with no connections at all.
I'm trying to remove things to avoid doing a factory reset by now, removing cache didn't help...
Is your phone rebooting also after loading the home screen? or it just loops in the LG screen or in the apps update screen?
Hello,
I had the same problem. Just hardware reset the device and the device will continue from optimizing the apps
Instructions on how to hard reset see the video find on youtube "How to Enter into Recovery Mode on LG G3!"
pbasiros said:
Hello,
I had the same problem. Just hardware reset the device and the device will continue from optimizing the apps
Instructions on how to hard reset see the video find on youtube "How to Enter into Recovery Mode on LG G3!"
Click to expand...
Click to collapse
Hello,
I got exactly the same problem (LG logo, brithness + and -, and then optimizing apps, then reboot)
I have a G3 european stock version, recently update to marshmallow (3 weeks ago). The pb occur when trying to connect to a open wifi network : suddenly reboot, then stucked in bootloop.
Is there any possbility of doing something using the "download mode" ? I really would like to recover photos in internal memory...
thanks
PCSE said:
I just got the official update to Marshmallow and I decided to just do it since it is official. It downloaded and then installed. Then it rebooted and showed that "apps are being optimized" screen and after that a bootloop of the lg logo. Rebooting doesnt work only if I take the battery out but afterwards there's still a bootloop. I also didn't do root or anything else to my device. I can not enter download mode or recovery either, but honestly idk if it has worked before.
Can anyone with probably similar experiences help me? Thanks in Advance from Germany
Click to expand...
Click to collapse
Hi
I managed to recover my phone, BUT I didn't manage to recover my personnal data... I had to reset everything...
My method : with this tool https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwi9oJnC66bMAhWHDsAKHY_cBVQQFggdMAA&url=http%3A%2F%2Fforum.xda-developers.com%2Fshowthread.php%3Ft%3D2683691&usg=AFQjCNGG5q9UKA6oKXlahEEOksUo8faGrw&sig2=cTz4bAtdqp4BEut2S4B2GA enter your imei, and download KDZ file, latest directly from LG server.
Then follow this method (in french sorry)
http://www.phonandroid.com/forum/installation-propre-flasher-facilement-un-firmware-officiel-fichier-kdz-lg-g3-t97193.html#p1452621
You can try "normal flash" at the first time, but if it doesn't work (for me it doesn't work) you will have to choose "CSE Flash" and it should work. But you will loose your personnal data. So be strong.
nikoscotch said:
Hi
I managed to recover my phone, BUT I didn't manage to recover my personnal data... I had to reset everything...
My method : with this tool https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwi9oJnC66bMAhWHDsAKHY_cBVQQFggdMAA&url=http%3A%2F%2Fforum.xda-developers.com%2Fshowthread.php%3Ft%3D2683691&usg=AFQjCNGG5q9UKA6oKXlahEEOksUo8faGrw&sig2=cTz4bAtdqp4BEut2S4B2GA enter your imei, and download KDZ file, latest directly from LG server.
Then follow this method (in french sorry)
http://www.phonandroid.com/forum/installation-propre-flasher-facilement-un-firmware-officiel-fichier-kdz-lg-g3-t97193.html#p1452621
You can try "normal flash" at the first time, but if it doesn't work (for me it doesn't work) you will have to choose "CSE Flash" and it should work. But you will loose your personnal data. So be strong.
Click to expand...
Click to collapse
Bro Thank You so much ive been searching for solution the last 2 days and you finally saved my life Thank you Man !
i have the same problem....after the stock firmware has been restored,what method is used to get the proper working marshmallow upgrade?
I went from 5.0 to 6.0 using the LG PC Suite.
0 problems, 0 reboots, quick and fast. Did you update through OTA?
yes i did but still boot lop............is it the battery?
so ?
Same problem here, did you find a solution ?
New G3 from LG but back in bootloop after 24h of use.
Thank you.
I got the exact same issue, neither hard reset or flashing firmware works. Is there any other solution or should i start looking for a new phone?
Edit: Somehow it works just fine now lol. Tried flashing it like 3 times and hard reset twice and now after an hour of constant optimizing apps bootlopping i pulled out the battery for like the 100th time and now it works, what the hell. Looks like my G3 will die soon tho haha
Hey, so im having problems here. I just got my new lg k10 (running on 5.1 Lollipop) and i rooted it with kingroot. after that, i decided to go play around with the ROM Toolbox app and when i rebooted it, or attempted to, i got a message with the lg logo saying "boot verification failed MISMATCH_SIG_LEN" with the error codes [410][420][430]. I already tried to enter recovery mode but it gives me the same message just with a different error code [4032] and some other ones. when i put it to charge it doesn't stay on the charging screen, it just keeps trying to boot again (which i think its called a bootloop, correct me if im wrong) so theres no way my pc can auto detect the phone. i even tried taking out the battery and still nothing. please help ASAP!!! :crying::crying:
Same here kingroot thats it. Rebooted and same thing happened. Boot verification failed. Just bought 2 days ago so I told them it shut off in the middle of an OTA update and they replaced it immediately. No download mode, recovery, nothing just LG logo bootloop with error as described above. Afraid to root new k10 until this is resolved.
Guys, did you try my guide? Check it out on LG K10 Guides, News, & Discussion
Does the op have this issue fixed i would be willing to offer my time
Sent from my LG-H900 using Xposed Modules
i found a fix
boot into fast boot by holding vol down when plugig into computer..... than use "fastboot oem unlock" command boot normally (don't mind the "cant check boot" message)
Same issue with LG V10
I am stuck in a bootloop "mismatch_sig_len" and I have tried putting it into download mode, factory reset and a couple of recovery tools that can't find my device. I have read something about having to "short" two pins with tweezers or copper, to get out of this. Are there any successful methods anyone knows of? Thanks in advance.
anthug1985 said:
boot into fast boot by holding vol down when plugig into computer..... than use "fastboot oem unlock" command boot normally (don't mind the "cant check boot" message)
Click to expand...
Click to collapse
How did this fix your issue, my device isn't even recognized by fastboot at all.
I've been watching several threads for the last few days, and have not seen this exact issue. I would greatly appreciate some help.
Device:
- Nexus 5X LGH790 32GB
- Stock bootloader / fastboot
- Never unlocked / rooted / etc.
The only advanced thing I've done is join the beta program a few months ago to get 7.0 early. Got that without any issue.
Issue:
I received the 7.1.1 OTA on the day it came out. Installed with no problems. The next day, the phone just froze in the middle of regular use. After about 15 seconds, it started boot looping to the Google splash screen. I can hold volume-down to enter fastboot, but when I select recovery mode, it just starts looping again. Pretty much all I could do was power it off. I did find out by accident that if I left it looping for long enough, sometimes it actually loaded normally (I even saw beta program warning/notice). But when I tried using it for more than a minute, it would freeze, reboot, and loop again.
What I've already tried:
- I tried using the WugFresh NRT fix softbrick method. I was able to quickly turn on debugging one of the times that I left it to loop. But when NRT sent a reboot the phone, it threw it back into the loop and NRT stopped recognizing the device.
- I tried to follow the unbrick procedure using a TOT file in this thread: http://forum.xda-developers.com/nexus-5x/help/tutorial-how-unbricked-nexus-5x-16gb-t3481766 But even after using LGUP, I still cannot even get into recovery mode.
- I filed a bug in the AOSP here: https://code.google.com/p/android/issues/detail?id=225802.
I'm at a loss here. On another thread, a member suggested this type of loop was a hardware/solder joint issue. I suppose that's possible... but man, what a coincidence that would be! Just now after the OTA the hardware fails? Any other thoughts? I'm pretty new to a lot of the terms/methods here, so maybe I missed something.
Thanks, DCK.
Update: I tried using LGUP again. The phone still gets stuck on the Google screen then boot loops.
Now, however, I am able to get into recovery mode consistently. Other threads have suggested doing an OTA sideload at this point. But I cannot seem to get my device recognized. The NRT shows no ADB devices connected. So I'm still stuck. Is there another way to try sideload?
DC_Knight said:
Update: I tried using LGUP again. The phone still gets stuck on the Google screen then boot loops.
Now, however, I am able to get into recovery mode consistently. Other threads have suggested doing an OTA sideload at this point. But I cannot seem to get my device recognized. The NRT shows no ADB devices connected. So I'm still stuck. Is there another way to try sideload?
Click to expand...
Click to collapse
Try fastboot/bootloader mode and fastboot flash the OTA manually.
Update 2: Seems like all the other things I tried over the last few days have caused various unofficial USB drivers to be installed. I've tried uninstalling most of them. I downloaded the google USB driver from latest SDK. But my 5X is still recognized as a Kedacom device when it is sitting at FastBoot.
However, I must have made some progress because I was able to start the sideload process. Unfortunately, I am now stuck on yet another error. The phone hangs at "verifying update package" and then after about 2 minutes... it reboots itself and starts looping again!
I thought I had it. So close. Now I want to throw the phone. Going to sleep, but would be grateful for any other suggestions in the morning.
- DCK
use nrt to erase all partitions, then download 7.1 factory image, unzip and flash one by one the partitions.
DC_Knight said:
...
I'm at a loss here. On another thread, a member suggested this type of loop was a hardware/solder joint issue. I suppose that's possible... but man, what a coincidence that would be! Just now after the OTA the hardware fails? Any other thoughts? I'm pretty new to a lot of the terms/methods here, so maybe I missed something.
Thanks, DCK.
Click to expand...
Click to collapse
Sounds like the boot loop issue many people have been having (the hardware/solder issue). It happened to me a few weeks ago after upgrading to Android 7.0. I got a replacement device from google.
If you're bootloader is locked, NRT or any other method to flash the factory image is not going to work. The only suggestion I have is to un-enroll in the beta program and hope your device will boot long enough to flash the ota Google will send the device to get back to 7.0. Note, this will wipe your device.
Sent from my Nexus 9 using XDA-Developers mobile app
Same problem here. It can't be recognized after I reboot to fastboot. So I can't flash anything.
If the device isn't recognized try this http://forum.xda-developers.com/showpost.php?p=69273414&postcount=33. It's worked for a few of us with the same problem
Sent from my Nexus 9 using XDA-Developers mobile app
Enter stock recovery then flash the full ota via adb sideload