Hello everyone,
Yesterday, after I tried to charge my LG G4, it stopped booting properly: it seems to boot "normally" under the hood, except that the system UI is not properly loading so instead I get a black screen and a message "Unfortunately system UI stopped working". If I click "ok", it comes back within two seconds (the screen stays black apart from the error message). I cannot do anything, like unlock the phone or access anything on it, despite the fact that I can hear notifications coming in.
Unfortunately phone is not rooted, developper mode isn't enabled, and I don't have a custom recovery. I would do a factory reset if it weren't for my Google Authenticator codes, some of which I haven't properly backed up like an idiot. Thus I was wondering what I could do to back up my phone or solve the issue.
Here is what I've already tried:
Press down VOLUME DOWN + POWER to enter recovery mode, but since I don't have custom recovery this only gives me the option to do a hard factory reset and lose all my data.
Use adb commands to access my phone, but I get "unauthorized device" because I haven't enabled developper tools on the phone.
Use the app "LG Bridge" on my mac, but it also doesn't work for the above reason.
I see three possibilities, but I don't know whether any is genuinely doable:
Solve the issue of the error message, which from what I've read requires me to wipe the cache. But how to do that without custom recovery?
Somehow bypass the UI to unlock the phone and unable developer tools
Manage to backup the phone from my computer while its locked without developper tools enabled.
Note that obviously this is my phone, I know my passwords, I have access to my Google account, etc.
Any help would be greatly appreciated, without my Google Authenticator data I'll be locked out of an important email account.
satiricon22 said:
Hello everyone,
Yesterday, after I tried to charge my LG G4, it stopped booting properly: it seems to boot "normally" under the hood, except that the system UI is not properly loading so instead I get a black screen and a message "Unfortunately system UI stopped working". If I click "ok", it comes back within two seconds (the screen stays black apart from the error message). I cannot do anything, like unlock the phone or access anything on it, despite the fact that I can hear notifications coming in.
Unfortunately phone is not rooted, developper mode isn't enabled, and I don't have a custom recovery. I would do a factory reset if it weren't for my Google Authenticator codes, some of which I haven't properly backed up like an idiot. Thus I was wondering what I could do to back up my phone or solve the issue.
Here is what I've already tried:
Press down VOLUME DOWN + POWER to enter recovery mode, but since I don't have custom recovery this only gives me the option to do a hard factory reset and lose all my data.
Use adb commands to access my phone, but I get "unauthorized device" because I haven't enabled developper tools on the phone.
Use the app "LG Bridge" on my mac, but it also doesn't work for the above reason.
I see three possibilities, but I don't know whether any is genuinely doable:
Solve the issue of the error message, which from what I've read requires me to wipe the cache. But how to do that without custom recovery?
Somehow bypass the UI to unlock the phone and unable developer tools
Manage to backup the phone from my computer while its locked without developper tools enabled.
Note that obviously this is my phone, I know my passwords, I have access to my Google account, etc.
Any help would be greatly appreciated, without my Google Authenticator data I'll be locked out of an important email account.
Click to expand...
Click to collapse
Well at least you can backup your phone in download mode with SALT ( https://bit.do/SALTatXDA ) but restoring is another story.
Sent from my LG-H815 using XDA Labs
Thanks a lot for your reply! I'll try backing up with SALT tonight. There are two things I'm wondering:
How do you think I could extra data from the backup?
Will I be able to wipe the cache or enable usb debugging with SALT? That might solve the issue.
satiricon22 said:
Thanks a lot for your reply! I'll try backing up with SALT tonight. There are two things I'm wondering:
How do you think I could extra data from the backup?
Will I be able to wipe the cache or enable usb debugging with SALT? That might solve the issue.
Click to expand...
Click to collapse
You can mount the userdata partition on Linux (e.g in FWUL) and then browse through it like it's on your phone.
You can wipe the cache paetition in SALT yes. It's in the advanced menu there (erase partitions -> select cache and only that). It will not wipe the dalvik cache though.
I dunno about the USB debugging though. Maybe there is a way but if so you would need a very unrestricted download mode (depends on model and firmware). And the whole process is not easy.
It requires again SALT and there you have in the advanced menu the option to open a shell.
Here you can mount userdata with
mount /data
But it's usually mounted already. Then it's a try and error. You could e. G. try to delete the dalvik cache etc.
Sent from my LG-H815 using XDA Labs
steadfasterX said:
You can mount the userdata partition on Linux (e.g in FWUL) and then browse through it like it's on your phone.
You can wipe the cache paetition in SALT yes. It's in the advanced menu there (erase partitions -> select cache and only that). It will not wipe the dalvik cache though.
I dunno about the USB debugging though. Maybe there is a way but if so you would need a very unrestricted download mode (depends on model and firmware). And the whole process is not easy.
It requires again SALT and there you have in the advanced menu the option to open a shell.
Here you can mount userdata with
mount /data
But it's usually mounted already. Then it's a try and error. You could e. G. try to delete the dalvik cache etc.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Hi!
I've found out that the Google Auth keys are in /data/data/com.google.android.apps.authenticator2/databases/databases. So I need to backup /data/. However, when I show the list of partitions with SALT, I don't see /data/. Is there a way to backup /data/ on my unrooted device?
Secondly, I haven't managed to wipe the dalvik cache with the command shell, would you be able to point me in the right direction?
Thank you so much!
Related
Hi there,
I owned a Galaxy Nexus running Jelly Bean 4.2.1 version, yakjuxw (Not rooted), GSM. I activated the Pattern Lock to prevent the kids at my relatives house messing my phone. Unfortunately, I forgot the pattern and the phone stays locked out. I have tried the pattern combinations for days but failed.
I have tried to key in my Gmail account username/password but since my phone is wifi/data switched off, I cant sign in. Moreover, I am not sure whether the USB Debugging is enabled.
I have tried some 'hole' methods recommended at some forums, but it didnt work on my phone.I hope to get access to my messages/images/some files and transfer them to my pc before reset the phone to factory setting. Please help! :-|
yu_buffon said:
Hi there,
I owned a Galaxy Nexus running Jelly Bean 4.2.1 version, yakjuxw (Not rooted), GSM. I activated the Pattern Lock to prevent the kids at my relatives house messing my phone. Unfortunately, I forgot the pattern and the phone stays locked out. I have tried the pattern combinations for days but failed.
I have tried to key in my Gmail account username/password but since my phone is wifi/data switched off, I cant sign in. Moreover, I am not sure whether the USB Debugging is enabled.
I have tried some 'hole' methods recommended at some forums, but it didnt work on my phone.I hope to get access to my messages/images/some files and transfer them to my pc before reset the phone to factory setting. Please help! :-|
Click to expand...
Click to collapse
You can reset the phone to Factory settings.
1. Turn off your phone.
2. Press vol up+vol down+power buttons till it vibrates. Now you see a dead android.
3. Navigate with your volume buttons to "Recovery Mode" and select it with the power button.
4. When its booted you should see a soort of menu.
5. Select "wipe data" (or something like that). THIS WIPES YOUR DATA AND YOUR INTERNAL STORAGE (music, pictures etc..)
6. Select reboot system now.
7. Done.
Sent from my Galaxy Nexus using XDA Premium HD app
Without wiping out the data
mrgnex said:
You can reset the phone to Factory settings.
1. Turn off your phone.
2. Press vol up+vol down+power buttons till it vibrates. Now you see a dead android.
3. Navigate with your volume buttons to "Recovery Mode" and select it with the power button.
4. When its booted you should see a soort of menu.
5. Select "wipe data" (or something like that). THIS WIPES YOUR DATA AND YOUR INTERNAL STORAGE (music, pictures etc..)
6. Select reboot system now.
7. Done.
Sent from my Galaxy Nexus using XDA Premium HD app
Click to expand...
Click to collapse
Thank you for the reply. But, I wish to get access to my files in order to transfer them to a save location before reset the phone to Factory settings. Is there a way to hack into the device without wiping out the data?
Try this out.
http://en.miui.com/thread-5684-1-1.html
ATTACK said:
Try this out.
http://en.miui.com/thread-5684-1-1.html
Click to expand...
Click to collapse
Call yourself from another phone and answer, after that your phone will probably get unlocked.
In ADB or some other way to access the file system in Recovery Mode
navigate to /data/system and
delete password.key and/or gesture.key
- reboot.
Password/Gesture Lock gone.
You can use AROMA File Manager in Recovery (would have to sideload it if you didn't pre-install it)
http://forum.xda-developers.com/showthread.php?t=1646108
Good luck. Post back with your solution.
Trying...
ATTACK said:
Try this out.
Click to expand...
Click to collapse
Thank you for the link. I am downloading the Cygwin on my Windows Vista machine. Slow broadband speed has actually delayed my work.
Sideload
jpinsl said:
In ADB or some other way to access the file system in Recovery Mode
navigate to /data/system and
delete password.key and/or gesture.key
- reboot.
Password/Gesture Lock gone.
You can use AROMA File Manager in Recovery (would have to sideload it if you didn't pre-install it)
http://forum.xda-developers.com/showthread.php?t=1646108
Good luck. Post back with your solution.
Click to expand...
Click to collapse
Thank you for the help. What do you mean by sideload? I am using a Galaxy Nexus which has no SD slot.
yu_buffon said:
Thank you for the help. What do you mean by sideload? I am using a Galaxy Nexus which has no SD slot.
Click to expand...
Click to collapse
Please use the search function:
http://forum.xda-developers.com/sitesearch.php?q=sideload
adb method failed
ATTACK said:
Try this out.
/QUOTE]
Hi, I have used the Mint Live session instead. When I type <adb shell>, it returns <error no device found>. What should I do? Please help.
Click to expand...
Click to collapse
I am a noob
jpinsl said:
Please use the search function:
Click to expand...
Click to collapse
Hi, I have searched about sideload. I have never rooted my phone before and having difficulties in understanding the android features. Can you provide me a walk-through on how can I install the recovery on my locked out phone and access my files please.
FYI, I tried the adb method listed above, but the terminal returns <error no device found>. I tried the method on Mint (linux) live session.
I managed to get access to my data. Messages are the only thing I am losing out. Thank you XDA guys.
So I have a busted screen, and due to work email and such, I'd like to wipe the phone before sending it back. I have attempted to navigate the factory reset with the buttons with no success. Any suggestions? The phone is factory unlocked.
Help is much appreciated!
ReMMy1100 said:
So I have a busted screen, and due to work email and such, I'd like to wipe the phone before sending it back. I have attempted to navigate the factory reset with the buttons with no success. Any suggestions? The phone is factory unlocked.
Help is much appreciated!
Click to expand...
Click to collapse
You have a few options.
Get the screen fixed.
Buy an mhl cable and show the screen on a TV, do what you like from there.
Not 100% but try adb commands through a PC and see if there is one to wipe the phone.
Again not 100% but you could use USB OTG to communicate and type in the code within the dialer to wipe the phone.
Flash an ruu, this should nuke the devices memory AFAIK.
There are probably more ways but they're what I would try first.
Or change your password on your work email, if you use a client like good, you can remove it from the device and the password will stop people entering it anyway, not to mention that its sandboxed.
If you have a password (pattern or pin) and you're rooted then you can easily remove them from TWRP recovery by deleting one file, however would the people who get the broken phone go to those lengths?
Hope this helps.
[HELP] "Android system has sttoped working" loop 2 seconds, unable to use screen.
Hello,
Lg g3 (Telefónica / Movistar branded Spanish carrier)
Bought in Jul 2014.
Weeks having reset problems, one day, on a reset, got the msg "Android system stopped working", close, 2 seconds, again same msg, I can't use ths screen to avoid it, just to close the msg window, neither to browse options in those 2 seconds in each loop. I can only use the turn on/off buton, so, when I reset, same stuff again..
I tried to use Recovery Mode (vol-) and I just get the option to restore and WIPE ALL INFO (even files, pics, etc..)... no more options
Tried Lg Suite + Download mode (I can enter in download mode) but the software don't recognice the device.... using original cable,
I need the stuff inside, don't care about the phone thou, will get a new one, but I really need the info inside (no SD, the info inside the internal storage).
Any help?
If you turn off the device, hold down power and volume down. Release them when the lg logo shows then immediately press them again you should get to a factory reset screen. Try performing a factory reset, this will not wipe your files, just all apps and app data
Hi,
thanks for the answer.
that was my first hint, but, as you can see ( imgur.com/ d31OXJi) that menu option says "Delete all user data (including LG and carrier apps) and reset all settings?"..
I do belive this is warning me about wipe all my data including pics, videos, contacts, etc...
Are you 100% sure that wthis will not wipe the entire information?¿
Thanks...
BUMP!
Can anyone help me or confirm us if I do the vol down restart to factory will wipe my pics away??
Thanks...
Really? Noone ever have restored the phone using this option on a g3 to know if the pics will be deleted or not? amazing...
Hi,
I have stock Marshmallow on my LG G4 and it somehow just stopped responding. At the startup there is an "android.com.phone stopped working" popup. After clicking OK, it dissapears and the phone doesn't respond for any unlocking attempts. After triple tap, the "magnifying lense" works and thats basically it. Before performing a factory reset I would like to get my data(photos, videos, possibly messages) backed up. But after connecting USB cable it is connected with "Loading only" option. I can't change it to mass storage or MTP. The phone works in background, I can see once in a while new notifications about updating apps etc. I tried using Safety Mode, same things happen.
Is there a way to change USB option remotely or perform a reset without losing all data? Since I never used USB debugging on this phone, I assume it is disabled.
Thanks for any help.
Looter11 said:
Hi,
I have stock Marshmallow on my LG G4 and it somehow just stopped responding. At the startup there is an "android.com.phone stopped working" popup. After clicking OK, it dissapears and the phone doesn't respond for any unlocking attempts. After triple tap, the "magnifying lense" works and thats basically it. Before performing a factory reset I would like to get my data(photos, videos, possibly messages) backed up. But after connecting USB cable it is connected with "Loading only" option. I can't change it to mass storage or MTP. The phone works in background, I can see once in a while new notifications about updating apps etc. I tried using Safety Mode, same things happen.
Is there a way to change USB option remotely or perform a reset without losing all data? Since I never used USB debugging on this phone, I assume it is disabled.
Thanks for any help.
Click to expand...
Click to collapse
Check out steadfasterX's thread: [TUTORIAL][LOCKED][UNLOCKED][ANY G4] DLM Backup - Full backup within download mode! at https://forum.xda-developers.com/g4/help/tutorial-backup-download-mode-t3659223
Read the OP thoroughly and post any questions there for help. He has proven very helpful to a lot of members.
Note: it is more informative and helpful when you post your model # and the exact kdz version you've got installed when seeking help.
So hello there!
I'm having the following issue and I'm kinda out of ideas.
I was running a (KingRoot) rooted fireOS 4.6.6.1 (420) if I'm not mistaken.
So this is what happened:
Phone was running just fine, but I wanted to get rid of the facebook background services which kept running without the actual app installed. Also a friend proposed to run the 'fstrim' command. So reading through xda I found an app called 3C Toolbox (http://www.3c71.com/android/?q=node/916) which seemed to be safe to use. Installed it and still didn't change a thing except for the three 'fstrim' actions to perform. After that I restarted my phone.
Powered off just fine, but at the start only the 'Amazon' logo comes up and vanishes into a black screen with the backlight still on. Even after waiting several hours nothing changes.
So what did I attempt to get it wirking again?
At first I tried to simply restart it. --> Nothing changed.
Tried to get into recovery and clean the cache. --> Nothing changed except the 'Amazon' being on for a bit longer
Get into ADB and try pull/uninstall... --> Guess due to the locked bootloader I'm not allowed to issue any command other than 'adb sideload [packagename]' for system updates. As for ADB itself I can only get it to recognize on the PC when I get into recovery and choose the 'apply update from ADB' option.
Get into fastboot according to this tutorial (https://forum.xda-developers.com/showthread.php?t=1668159) --> doesn't work.
Get into 'Safe Mode' with this tutorial (https://forum.xda-developers.com/fire-phone/help/how-to-fire-phone-to-boot-safe-mode-t2828240) --> doesn't work either.
So does anybody has another idea I could give a try or should I just abondon all my data and flash a new clean image?
Also I'm not sure if updating from ADB will erase all personal data too. Guess so, but maybe I can get a clearification in here too.