G3 Stuck on AT&T Logo on Boot Up - G3 Q&A, Help & Troubleshooting

My wife's phone is stuck on the AT&T screen when booting. I am able to get into download mode, but am unsure of what to do next. I've downloaded the PC Suite and Mobile Support Tool (which seems to be more recent) from LG but in both cases when I do the update recovery I can't get it to work. The phone is totally stock, no root or anything, and as far as I know had the latest updates.
Can anyone help me bring the phone back from the dead?

This would probably work=
Ensure the device is power off.
Note If screen is frozen, remove/reinsert battery.
Press and hold the Volume Down button then press and hold the Power button. When the System recovery screen is displayed, release both buttons.
Select Factory data reset.
Note Utilize the Volume buttons to highlight and the Power button to select.
Select Yes.
Note Allow several minutes for the factory data reset and reboot processes to complete.

Related

GUIDE: What to do in the event of "soft bricking" your tablet...

If you have flashed a rom and your tablet "soft bricks", i.e. it gets stuck at the Samsung splash screen or boot loops Recovery there is an easy way to recover without having to reflash the original firmware in ODIN (assuming you were smart and made a NANDROID backup before flashing your rom).
TURNING THE DARNED THING OFF:
Here's the problem. If you are at the Samsung splash screen or boot looping Recovery, you cannot turn your tablet off by just pressing the power button and you can't pull the battery. This prevents you from getting back into Recovery and restoring your NANDROID backup. So here is what you do:
1) Plug your tablet into your computer (this is important!).
2) Hold down the home, volume down and power buttons until you boot into download mode. Once you are prompted, push the volume up button to enter download mode completely.
3) Now, once in download mode, hold down the power and volume down buttons (not the home button this time) until you screen goes blank (your tablet MUST be plugged into your computer for this to work!). Release the buttons and you will see the battery symbol on your screen. Your tablet is now off - thank god.
4) To enter Recovery mode, hold the home, volume up and power buttons down until Recovery loads.
5) Restore your NANDROID backup.
Disaster averted.
i never manage to enter recovery using the button combination with the 8.4... dont really know why...
edan1979 said:
i never manage to enter recovery using the button combination with the 8.4... dont really know why...
Click to expand...
Click to collapse
Only works if the tablet is off. The key part of this little tutorial is just turning the tablet off when you are stuck in a loop. Once you are off you're golden.
I panicked yesterday because i can't exit download mode with a simple hold of the power key,
LoVeRice said:
I was panicking yesterday because i can't exit download mode with a simple hold of the power key,
Click to expand...
Click to collapse
Hope this helped.
Thanks.
Lots of new roms. Make sure you check those firmware numbers before flashing folks!
When I was stuck on the Samsung logo for 20 minutes after installing this (beta version) rom a week or so back I did this:
1. Held down the Home, Power, Volume up and down buttons for about 10 seconds, not sure if you need all of them held down, but it seems it force restarts the tablet.
2. After the screen went black I immediately held down the Home, Power, and Volume down buttons to enter into download mode.
3. Flashed the latest XAR stock rom from SamMobile.
If anyone is testing a new kernel keep an eye on those temps. An app called CPUTemp has excellent monitoring. You want to be staying under 100c even when benchmarking.
Almost there but
I did everything you said but when i press the recovery combo nothing happens.It is as if there is no recovery!!!
Help plz.I am furstrated and angry!!!
123
mitchellvii said:
Only works if the tablet is off. The key part of this little tutorial is just turning the tablet off when you are stuck in a loop. Once you are off you're golden.
Click to expand...
Click to collapse
Ok that all worked fine, but now that I got it turned off I can't get it to go any further than the charging icon is there a way to push files to it while it off? any help or suggestions are greatly appreciated
Same here. Can get into download mode but can't get into recovery. I've TWRP.
Ok made it into recovery.
Update:
I've now wiped Cache and Dalvik Cache and after rebooting it now says Android is upgrading / Starting apps.
Is this a good or a bad sign?
mitchellvii said:
If you have flashed a rom and your tablet "soft bricks", i.e. it gets stuck at the Samsung splash screen or boot loops Recovery there is an easy way to recover without having to reflash the original firmware in ODIN (assuming you were smart and made a NANDROID backup before flashing your rom).
TURNING THE DARNED THING OFF:
Here's the problem. If you are at the Samsung splash screen or boot looping Recovery, you cannot turn your tablet off by just pressing the power button and you can't pull the battery. This prevents you from getting back into Recovery and restoring your NANDROID backup. So here is what you do:
1) Plug your tablet into your computer (this is important!).
2) Hold down the home, volume down and power buttons until you boot into download mode. Once you are prompted, push the volume up button to enter download mode completely.
3) Now, once in download mode, hold down the power and volume down buttons (not the home button this time) until you screen goes blank (your tablet MUST be plugged into your computer for this to work!). Release the buttons and you will see the battery symbol on your screen. Your tablet is now off - thank god.
4) To enter Recovery mode, hold the home, volume up and power buttons down until Recovery loads.
5) Restore your NANDROID backup.
Disaster averted.
Click to expand...
Click to collapse
my nandroids were not visible... like,wtf,I can't find any of my backups, twrp isn't showing internal or external SDS...weird
Just bricked my Galaxy Tab S. Got it off and it is showing the battery sign. During TWRP I somehow wiped the internal sd. If I download a T800XXU1ANJ6_T800XAR1ANI1_XAR.zip will I be able to ODIN it back to stock? HELP
Lost my backups
Just downloaded and installed via Odin a firmware version of this tablet and all is well. Just have to start all over again, currently writing this due to a Samsung update for the firmware. YEA!
mitchellvii said:
If you have flashed a rom and your tablet "soft bricks", i.e. it gets stuck at the Samsung splash screen or boot loops Recovery there is an easy way to recover without having to reflash the original firmware in ODIN (assuming you were smart and made a NANDROID backup before flashing your rom).
TURNING THE DARNED THING OFF:
Here's the problem. If you are at the Samsung splash screen or boot looping Recovery, you cannot turn your tablet off by just pressing the power button and you can't pull the battery. This prevents you from getting back into Recovery and restoring your NANDROID backup. So here is what you do:
1) Plug your tablet into your computer (this is important!).
2) Hold down the home, volume down and power buttons until you boot into download mode. Once you are prompted, push the volume up button to enter download mode completely.
3) Now, once in download mode, hold down the power and volume down buttons (not the home button this time) until you screen goes blank (your tablet MUST be plugged into your computer for this to work!). Release the buttons and you will see the battery symbol on your screen. Your tablet is now off - thank god.
4) To enter Recovery mode, hold the home, volume up and power buttons down until Recovery loads.
5) Restore your NANDROID backup.
Disaster averted.
Click to expand...
Click to collapse
Just bricked my new Tab S and could not shut it down. I also deleted my sd card during a TWRP move so found the firmware and back to ODIN and I am on my way to recovery, but first thanks is to you to save me from my panic!
Appreciate your advice in getting tab off and back into recovery. Whew!
mitchellvii said:
If you have flashed a rom and your tablet "soft bricks", i.e. it gets stuck at the Samsung splash screen or boot loops Recovery there is an easy way to recover without having to reflash the original firmware in ODIN (assuming you were smart and made a NANDROID backup before flashing your rom).
TURNING THE DARNED THING OFF:
Here's the problem. If you are at the Samsung splash screen or boot looping Recovery, you cannot turn your tablet off by just pressing the power button and you can't pull the battery. This prevents you from getting back into Recovery and restoring your NANDROID backup. So here is what you do:
1) Plug your tablet into your computer (this is important!).
2) Hold down the home, volume down and power buttons until you boot into download mode. Once you are prompted, push the volume up button to enter download mode completely.
3) Now, once in download mode, hold down the power and volume down buttons (not the home button this time) until you screen goes blank (your tablet MUST be plugged into your computer for this to work!). Release the buttons and you will see the battery symbol on your screen. Your tablet is now off - thank god.
4) To enter Recovery mode, hold the home, volume up and power buttons down until Recovery loads.
5) Restore your NANDROID backup.
Disaster averted.
Click to expand...
Click to collapse
Thanks a lot. I just registered at xda developers in order to be able to reply and thank you. You saved my tabS 8.4 two weeks ago. However, I lost this thread since that time and I just found it again today after almost 2 hours of google searching. All that to show my appreciation for helping me to switch off my tablet having been stuck at the booting loop.
I would send you money if I knew how. THANK YOU SO MUCH! I had this problem with a Samsung Tab S I got at Costco, and returned it for a new one. That was about a year ago, and I was sure I would have to take it back again. You are uberawesome!
Kindly help me if u can ^_^
cyaclone said:
Just bricked my Galaxy Tab S. Got it off and it is showing the battery sign. During TWRP I somehow wiped the internal sd. If I download a T800XXU1ANJ6_T800XAR1ANI1_XAR.zip will I be able to ODIN it back to stock? HELP
Lost my backups
Just downloaded and installed via Odin a firmware version of this tablet and all is well. Just have to start all over again, currently writing this due to a Samsung update for the firmware. YEA!
Click to expand...
Click to collapse
Dear,
My case problem is like yours, after I wipe from TWRP I do restart my device & I'm now stuck on Samsung Logo or Battery Logo (if I plug it with my computer).
Now how can I download a new firmware, although I can't open download mode or recovery mode through (Volume Down+Home+Power)?
Thnx n Adv.
Kashkool said:
Dear,
My case problem is like yours, after I wipe from TWRP I do restart my device & I'm now stuck on Samsung Logo or Battery Logo (if I plug it with my computer).
Now how can I download a new firmware, although I can't open download mode or recovery mode through (Volume Down+Home+Power)?
Thnx n Adv.
Click to expand...
Click to collapse
You have a couple of options.
1) Do as the guide says. It usually works.
2) If it didn't work, unplug your device and wait until it discharges the battery and goes off. Then charge it from USB, and turn it on with holding down Home+VolumeDown+Power buttons until DOwnload mode appears. Then press VolumeUp, and flash it from ODIN.

LG G3: Hidden Menu / MiniOS / Recovery Mode

Have you found and used the Hidden Menu function of the LG G3? Opened up Device Test, but stuck in MiniOS with a blank screen that has a circle with a + in the middle for each part of the screen you touch? Can't get into recovery mode? Got into recovery mode, but don't know how to get it to work?
Well I have done my research, and had my fair share of panicking thinking that I had bricked my phone because none of the advice online matched up perfectly. But if you have made that mistake yourself, here is how to unbrick and reset your phone.
1. Start your phone up by holding onto both the power button and the buttom volume key. When the logo pops up, let go for a second, and hold onto both buttons again. This should bring up the option to reset your phone. Agree to both prompts.
2. You should be on a new screen. It may warn you not to touch the screen because it is calibrating or testing it. You will have to press OK, and then give it a few seconds to do that bit.
3. The screen should have a list of options at this point (some of which say "+power) on them. If you want to use any of these options, you need to hold the power button, and then press that option on the screen. Press "normal boot (+power)" (don't forget to hold the power button at the same time). This should put your phone back to normal, and set it up again just like it came out of the box.
Hope this helps someone.
Related links:
http://lg-g3.wonderhowto.com/how-to/unlock-hidden-menu-run-diagnostic-test-your-lg-g3-0156740/
http://forums.androidcentral.com/ask-question/433186-lg-l70-stucked-aat-mini-os-3-0-a.html
http://forum.xda-developers.com/lg-g3/help/g3-d855-aat-mini-os-3-1-t2829709

F400S Dead end

Hi,
how are u all i hope you are fine.
to start with i have root the phone by the application stump , and flash a twrp by flashiy.
the phone report and the recovery was working fine i have done the advance wipe and repot the phone.
Now its jammed on the booting with lg logo , nothing is working no download mode and no recovery .
the phone even is it loading up to do it with fast boot. i have tried everything i press all the button a Korean screen will shows tried the options repot and stuck again.
nasser789 said:
Hi,
how are u all i hope you are fine.
to start with i have root the phone by the application stump , and flash a twrp by flashiy.
the phone report and the recovery was working fine i have done the advance wipe and repot the phone.
Now its jammed on the booting with lg logo , nothing is working no download mode and no recovery .
the phone even is it loading up to do it with fast boot. i have tried everything i press all the button a Korean screen will shows tried the options repot and stuck again.
Click to expand...
Click to collapse
Shut the phone down. then remove the battery and wait 20 seconds and reinsert it. Then try to get into recovery (look here for how to http://www.android.gs/enter-recovery-mode-lg-g3/) mode and see if the phone is recognised by the computer if you connect it. Then do a data factory reset in recovery.
Turn off your phone – you can press power button once for selecting “power off” or you can press and hold the power key for about 5 or 6 seconds.
Now, press and hold Power and Volume down buttons at the same time.
When the LG logo appears, release the keys.
Immediately press Power and Volume Down buttons again until the Hard Reset menu will be displayed.
Press Power button once and confirm the hard reset operation (this will not be necessarily if your LG G3 is running on a custom recovery image).
That’s it; now your LG G3 will boot into recovery mode.
gee2012 said:
Shut the phone down. then remove the battery and wait 20 seconds and reinsert it. Then try to get into recovery (look here for how to [ mode and see if the phone is recognised by the computer if you connect it. Then do a data factory reset in recovery.
Turn off your phone – you can press power button once for selecting “power off” or you can press and hold the power key for about 5 or 6 seconds.
Now, press and hold Power and Volume down buttons at the same time.
When the LG logo appears, release the keys.
Immediately press Power and Volume Down buttons again until the Hard Reset menu will be displayed.
Press Power button once and confirm the hard reset operation (this will not be necessarily if your LG G3 is running on a custom recovery image).
That’s it; now your LG G3 will boot into recovery mode.
Click to expand...
Click to collapse
thank you very much for your response.
i tried it same problem stuck in booting the phone lg logo. i tried to put in the download mode the phone stuck on lg logo.
the only response from the phone is when i press the whole buttons and it take me to a koren menu showing imei.

HTC Desire 820n one sim restarts continuously - stuck in boot logo, loop, help me plz

I have been using my HTC Desire 820 for the past 2 years. It was updated to Marshmallow two months back.
All of a sudden my phone had a restart. Ever since, it turns on - gets stuck in the logo - restarts. This has been happening in a loop.
Totally stuck with the problem.
Thanks
I'm no expert but...
Have you tried plugging in the charger? Forcefully turning off the device (long press the power button until screen is totally off)?
Do you imply that the software is official (updated over OTA from the settings), or did you mess with the device? (install custom ROM/recovery etc.)
After turning it off, maybe try to turn it on by pressing both the power button and volume down, until it goes into HBOOT menu (example image https: //forums .androidcentral.com/attachments/htc-one-m8/144676d1414689464t-htc-one-tampered-locked-security-warning-imag2693.jpg - delete the spaces). From here, you may try to access the recovery (navigate with volume buttons), and after entering recovery hold down power and volume down buttons for about 5-10 seconds, release, and you should see a menu. You may try to clear the cache.
Alternatively, if you are willing to lose the data on your phone, you can do a factory reset from hboot.
Hope this helps.
maestrulwro said:
I'm no expert but...
Have you tried plugging in the charger? Forcefully turning off the device (long press the power button until screen is totally off)?
Do you imply that the software is official (updated over OTA from the settings), or did you mess with the device? (install custom ROM/recovery etc.)
After turning it off, maybe try to turn it on by pressing both the power button and volume down, until it goes into HBOOT menu (example image https: //forums .androidcentral.com/attachments/htc-one-m8/144676d1414689464t-htc-one-tampered-locked-security-warning-imag2693.jpg - delete the spaces). From here, you may try to access the recovery (navigate with volume buttons), and after entering recovery hold down power and volume down buttons for about 5-10 seconds, release, and you should see a menu. You may try to clear the cache.
Alternatively, if you are willing to lose the data on your phone, you can do a factory reset from hboot.
Hope this helps.
Click to expand...
Click to collapse
Thank you but it hasn't helped

How to reliably start TWRP

I have TWRP installed, and have managed to run it a few times. Now I cannot start TWRP at all.
From off, if I switch on, the following happens:
1) Screen with Samsung Galaxy A70 - Secured by Knox
2) 0.5 seconds later another screen, "this phone's bootloader is unlocked and it software integrity. .." and "press power key to continue..."
3) 5 seconds later, same screen as (1)
4) 3 seconds later, red letters "this phone is not running Samsung's official software"
5) 3 seconds later blank screen with "samsung" and then booting to android.
In my experience I have to flash twrp every time I want to use it( I don't know the reason but I couldn't fix it ) , for booting twrp on the other hand I turn off the phone first, then I press power button+volume down until the "this phones bootloader..." screen appears, here is the tricky part, you have to quickly let go of these two buttons, press power button, let go of the power button (after the warning disappeared) and then press volume down button (and hold it) until twrp logo appears, this happens really fast so you may need to do it a few times to get used to it.
mobin22 said:
In my experience I have to flash twrp every time I want to use it( I don't know the reason but I couldn't fix it )
Click to expand...
Click to collapse
Yes, same here, the only time I have managed to run TWRP on this phone, is right after a flash.
mobin22 said:
and then press power down button
Click to expand...
Click to collapse
Do you mean volume down?
Zilliman said:
Yes, same here, the only time I have managed to run TWRP on this phone, is right after a flash.
Do you mean volume down?
Click to expand...
Click to collapse
Power off the device, plug into a pc, wait for it to start charge, hold vol up and power till it turns on. Wala boots to twrp. If you have magisk installed,you can use the reboot option within magisk.
mobin22 said:
In my experience I have to flash twrp every time I want to use it( I don't know the reason but I couldn't fix it ) , for booting twrp on the other hand I turn off the phone first, then I press power button+volume down until the "this phones bootloader..." screen appears, here is the tricky part, you have to quickly let go of these two buttons, press power button, let go of the power button (after the warning disappeared) and then press volume down button (and hold it) until twrp logo appears, this happens really fast so you may need to do it a few times to get used to it.
Click to expand...
Click to collapse
Samsung changed how to enter recovery on Android 11. Power off device, plug into pc, wait for it to charge, then hold vol up and power till it turns on. Alternatively, if you have magisk installed, use the reboot options within magisk.
I did that. Thanks!
But it has gone to:
Android Recovery
Samsung /a70qxx/a70q
11/RP1A.200720.012./A705FNXXUB5DVB3
user/release-keys
Use volume up/down and power.
Reboot system now
Reboot to bootloader
Apply update from ADB
Apply update from SD card
Wipe date/factory reset
...
...
...
Where is TWRP? It seems it's gone.
Zilliman said:
I did that. Thanks!
But it has gone to:
Android Recovery
Samsung /a70qxx/a70q
11/RP1A.200720.012./A705FNXXUB5DVB3
user/release-keys
Use volume up/down and power.
Reboot system now
Reboot to bootloader
Apply update from ADB
Apply update from SD card
Wipe date/factory reset
...
...
...
Where is TWRP? It seems it's gone.
Click to expand...
Click to collapse
That's because you're not installing it properly go back to my guide and follow it exactly and stop listening to these other people. I've been modding this device since it first came out with Android 9, I know every inch of this device. You're getting confused by what other people are telling you
MarvinMod said:
5- Press and hold vol down and power till the screen turns blank then immediately press and hold vol up. The device will reboot then land you in the twrp splash screen
Click to expand...
Click to collapse
It fails here, on this step. After successful flash of recovery.tar, power + vol down to reboot, cable still connected, nothing you can do now can bring TWRP up. The phone boots into Android.
EDIT: I think I have now got it. I will update in a few mins.
Zilliman said:
It fails here, on this step. After successful flash of recovery.tar, power + vol down to reboot, cable still connected, nothing you can do now can bring TWRP up. The phone boots into Android.
EDIT: I think I have now got it. I will update in a few mins.
Click to expand...
Click to collapse
After successful flash of recovery.tar, power and vol down to reboot, as soon as the phone screen goes blank, immediately release all keys and press and hold vol up. Must be as soon as screen goes blank. The device will then reboot twice and land you in twrp splash screen. You must hit vol down and power after successful flash then when screen blanks, vol up. If you miss this step, twrp will not hold and revert back to stock recovery.
Here is the notes I made today:
****************************************************************
INSTALL + START TWRP
phone is off
press up + dn
insert cable
go into download (press up)
ODIN 3.14 + AP:tar(vbmeta.img+twrp.img), auto reboot off, press upload
when it succeeds, press dn + pwr until it reboots
then quickly up + pwr until it starts (no need to hold down)
this starts in TWRP
from powered off
press pwr button
goes into twrp or android(system) -- depending on what was used last time
if we used reboot->system last time it will now **Always** go into system!
to go back into twrp:
switch off
power cable until charge
pwr + up until it starts
****************************************************************
The above means that you CANNOT go back to TWRP unless you have a cable and a PC near by.

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