Startup blocked on Logo LG - G Pad 8.3 Q&A, Help & Troubleshooting

Good morning,
When I start my tablet, I remain stuck on the LG logo ...
I can't connect my Pc with lg pc suite or Lg mobile support tool or flashtool.....
Can you help me please ?
Thanks
Edit 07/05 : i got the message on boot ; Secure booting error! Cause : boot certification verify
Eric

I just went thru this with my a G Pad 8.0, had quite a few hangups but I ended up figuring it out. Some suggestions from what I learned... :
- Fully charge up your tablet. Mine was charging extremely slow, so I left it plugged in overnight and that finally ended up doing the trick.
- Make sure you have the correct driver installed. If you go to LG's website and find their downloads section, you can search for your device and download its driver. I'm pretty sure their tablet driver isn't device specific, but so if you have any difficulty finding this, let me know and I can post the one that worked for me. After you download the file, don't forget to open and install it. While you're there, you can I'd just go ahead and re-download and reinstall their mobile support tool, just to make sure you've got the most current update. After it installs, open the program; I don't know if you have to, please let but I'd have it open and waiting before you do these next steps.
- Completely power off your device. Unplug it from the wall and turn it off. I found that if I just held down the power button until the screen went dark, my tablet 3would restart itself a few seconds later. But when I kept holding down the power bites dxton thru the reset, it would turn off a 2nd time and actually stay off (about 15sec or so).
- In order to run LG's support tool, you'll wanna boot into download mode. You can search for your device online and it should explain how to do this, I found a couple conflicting methods but I believe the one that worked for me was just by holding the volume up key and then plugging it in to your PC with a USB. If that doesn't work, try pressing the volume up and power keys together then plugging it in, or try pressing both of the volume keys. One of those 3 should have you entering download mode. It will take a few seconds after you attach the cord for you to boot up; keep holding down the keys you pressed until you see the download mode screen. When plugging it in, but I it might be easier to keep holding down the buttons if you start with the cord plugged into your powered off device, and and then plug the other end into your PC while you are doing the boot process. It shouldn't matter which end you connect last, and I found this method to be way less awkward.
- The LG mobile support tool should automatically recognize your device and automatically start the update, and but you might need to select your device yourself, or at least the service provider, in order to update correctly. Just DON'T unplug your tablet thru the entire process. I think the whole thing took me about 15 minutes, depends on your Internet speed really.
- if you've managed to successfully run the update and you're still stuck in a boot loop, you're gonna have to reset your device. Again, you can Google how to do this, but I think most LG's perform a hard reset by making sure the phone is turned off, then press and hold the power and volume down keys. When the LG logo appears, release the power key for a second while still holding down the volume key, and then press and hold power down again until you see the reset screen. Use your volume and power keys to factory reset your device.
Hopefully, now it is should be able to boot just fine! Let me know if you encounter any problems and I'll see what I can do to help.

Hi, thanks for your help sheebie, i'll try asap .
Regards
Eric
sheebie said:
I just went thru this with my a G Pad 8.0, had quite a few hangups but I ended up figuring it out. Some suggestions from what I learned... :
- Fully charge up your tablet. Mine was charging extremely slow, so I left it plugged in overnight and that finally ended up doing the trick.
- Make sure you have the correct driver installed. If you go to LG's website and find their downloads section, you can search for your device and download its driver. I'm pretty sure their tablet driver isn't device specific, but so if you have any difficulty finding this, let me know and I can post the one that worked for me. After you download the file, don't forget to open and install it. While you're there, you can I'd just go ahead and re-download and reinstall their mobile support tool, just to make sure you've got the most current update. After it installs, open the program; I don't know if you have to, please let but I'd have it open and waiting before you do these next steps.
- Completely power off your device. Unplug it from the wall and turn it off. I found that if I just held down the power button until the screen went dark, my tablet 3would restart itself a few seconds later. But when I kept holding down the power bites dxton thru the reset, it would turn off a 2nd time and actually stay off (about 15sec or so).
- In order to run LG's support tool, you'll wanna boot into download mode. You can search for your device online and it should explain how to do this, I found a couple conflicting methods but I believe the one that worked for me was just by holding the volume up key and then plugging it in to your PC with a USB. If that doesn't work, try pressing the volume up and power keys together then plugging it in, or try pressing both of the volume keys. One of those 3 should have you entering download mode. It will take a few seconds after you attach the cord for you to boot up; keep holding down the keys you pressed until you see the download mode screen. When plugging it in, but I it might be easier to keep holding down the buttons if you start with the cord plugged into your powered off device, and and then plug the other end into your PC while you are doing the boot process. It shouldn't matter which end you connect last, and I found this method to be way less awkward.
- The LG mobile support tool should automatically recognize your device and automatically start the update, and but you might need to select your device yourself, or at least the service provider, in order to update correctly. Just DON'T unplug your tablet thru the entire process. I think the whole thing took me about 15 minutes, depends on your Internet speed really.
- if you've managed to successfully run the update and you're still stuck in a boot loop, you're gonna have to reset your device. Again, you can Google how to do this, but I think most LG's perform a hard reset by making sure the phone is turned off, then press and hold the power and volume down keys. When the LG logo appears, release the power key for a second while still holding down the volume key, and then press and hold power down again until you see the reset screen. Use your volume and power keys to factory reset your device.
Hopefully, now it is should be able to boot just fine! Let me know if you encounter any problems and I'll see what I can do to help.
Click to expand...
Click to collapse

Related

Just another person who has Hard Bricked his M8

Hello Everyone
TL;DR Screen doesn't come on at all, battery led only flashes while it is rebooting (More details below), and When plugged in to my windows pc, a bunch of "Local Disk Found" pop up, some of the volumes I can access, most I cannot.
I have searched and searched the internet the past 24 for solutions, and have yet to find one. So imma walk you through what led up to the issue, as well what solutions I have tried.
Yesterday while I was trying to update my rom, I ended up getting stuck in what I thought was a boot loop. I then decided to hard reset my phone and go into recovery in hope to try to reinstall the rom. To my surprise, I could not access the internal sd card in the phone. Data was unmounted in the "Mount" settings and I could not what so ever remount it. After this I tried to side load it, but to no avail.
In response to all my attempts to fix the phone at that point, in frustration, I just said "**** it" and went into factory reset in the bootloader. This is where the hard brick happened. At this point, the screen would not come one, and the battery led was not lit when plugged in. I tried letting my phone charge over night and then, tried the "Battery Recalibrate method". I then tried the "Hold Pwr + Volume up for 10 seconds, then Power + volume Down until you access the bootloader"
After that, I then thought that the firmware was corrupted, so I tried to see if I could push an img to the phone, however fastboot does not see the device. I tried RUU, it does not see the device. I tried the HTC Unbrick method by Dexter that required me to install ubuntu and do some things in terminal, that also did not find the device. And here I am stuck. One thing unique to my situation that I have yet seen reported in the countless threads I have searched, is that when I plug my phone to my pc, a large amount of disk drives are found. Most of them are not accessible, but there are a couple that I can go in and see files for. Windows asks me if I want to format the ones I can't access. When hooked to my pc, I tried the the Power + volume button combinations, the only thing that seems to happen off of this is that my phone seems to reboots, and the battery indicator briefly shows.
Anyways, this is all I can remember. Any help would be GREATLY appreciated. I don't really think it is a hardware related issue since my phone does somewhat boot. However it seems it can't get to a bootloader what so ever.
Try holding power and vol up for a long time, like a minute or more. Try with and without charger attached, and after sitting on charger overnight.
If the bootloader is intact, the phone is likely not truly bricked (recoverable). And I don't see how you could have damaged hboot by the actions you mentioned.
What is the phone's original CID (carrier version) and are you s-on or s-off?
redpoint73 said:
Try holding power and vol up for a long time, like a minute or more. Try with and without charger attached, and after sitting on charger overnight.
If the bootloader is intact, the phone is likely not truly bricked (recoverable). And I don't see how you could have damaged hboot by the actions you mentioned.
What is the phone's original CID (carrier version) and are you s-on or s-off?
Click to expand...
Click to collapse
Verizon is the carrier version, and I am s-off.
Held vol + up for 5 minutes both with and without the charger. One time with the charger into my computer, and another into the wall. When it was in my pc, I can tell its doing nothing but rebooting over and over by the notification sound, and the constant "Found new disk" notifications I got. However still no luck, no screen turns on, no sign of hboot. I'm hoping to have some luck after leaving it on charge overnight and trying again.
TheBizkit said:
Held vol + up for 5 minutes both with and without the charger. One time with the charger into my computer, and another into the wall. When it was in my pc, I can tell its doing nothing but rebooting over and over by the notification sound, and the constant "Found new disk" notifications I got. However still no luck, no screen turns on, no sign of hboot. I'm hoping to have some luck after leaving it on charge overnight and trying again.
Click to expand...
Click to collapse
So still nothing after leaving it on charge overnight and I held vol + up for about 5 minutes. Things seem grim.
I think the proper thing to do when you discovered internal storage was not mountable, would have been to use the TWRP option to format internal storage (in Advanced Wipe options).
But now I'm baffled as to what happened that would have rendered the phone unable to boot into fastboot mode. Fastboot won't recognize the device if you can't boot into fastboot mode, which leaves use kinda stuck.
So you didn't try to flash anything during the course of all this troubleshooting?
What you did - "Hold Pwr + Volume up for 10 seconds, then Power + volume Down until you access the bootloader" is totally wrong
I used to get this bunch of local disk pop-up and this is how I get out the problem
Connect the device to pc, you can hear notification sound on pc that device is connected. Ignore all those bunch of local disk pop-up
Press & hold both power button & volume up button until you hear another notification sound that device is disconnected from PC (that's the indication that device is restarted)
Release both power & volume up button and quickly press & hold volume down button (only this one button)
This should get you on bootloader
redpoint73 said:
I think the proper thing to do when you discovered internal storage was not mountable, would have been to use the TWRP option to format internal storage (in Advanced Wipe options).
But now I'm baffled as to what happened that would have rendered the phone unable to boot into fastboot mode. Fastboot won't recognize the device if you can't boot into fastboot mode, which leaves use kinda stuck.
So you didn't try to flash anything during the course of all this troubleshooting?
Click to expand...
Click to collapse
No, nothing was flashed except the original Rom update that got this snowball rolling (Not saying its the roms fault, most likely mine).
ckpv5 said:
What you did - "Hold Pwr + Volume up for 10 seconds, then Power + volume Down until you access the bootloader" is totally wrong
I used to get this bunch of local disk pop-up and this is how I get out the problem
Connect the device to pc, you can hear notification sound on pc that device is connected. Ignore all those bunch of local disk pop-up
Press & hold both power button & volume up button until you hear another notification sound that device is disconnected from PC (that's the indication that device is restarted)
Release both power & volume up button and quickly press & hold volume down button (only this one button)
This should get you on bootloader
Click to expand...
Click to collapse
This is the one combination I forgot to mention in the op, sorry for that.
But I have tried this, before and after your post, still no luck.
If it worth mentioning, I can just hold power + down and it still reboots over and over. As well as just power. As a matter of fact, all button combinations reboot the phone over and over.
TheBizkit said:
If it worth mentioning, I can just hold power + down and it still reboots over and over. As well as just power. As a matter of fact, all button combinations reboot the phone over and over.
Click to expand...
Click to collapse
I thought the screen was dead? If so, how do you know its rebooting?
redpoint73 said:
I thought the screen was dead? If so, how do you know its rebooting?
Click to expand...
Click to collapse
By it constantly connecting and disconnecting from my pc. If that doesn't mean its rebooting, then I guess I'm mistaken.
TheBizkit said:
By it constantly connecting and disconnecting from my pc. If that doesn't mean its rebooting, then I guess I'm mistaken.
Click to expand...
Click to collapse
Well, it might mean that.
If it in fact is rebooting over and over on its won, simply holding the vol down button for a long time, should put you into bootloader (on the next reboot "cycle"). Again, assuming it is in fact rebooting, and that bootloader is intact.

OTA update 24.14.12 fix if update fails

Long and short. The OTA 24.14.12 bricked my phone this morning. It went through the normal process. Restart and the little man with rotating globe in belly. 2 minutes in it stopped updating with just update error above man and phone rebooted. Just Verizon logo on screen well that lite my fuse. Well since I am a computer support tech I know a little about Android Linux so I gave it a shot to fix the problem. Here are the steps below and have a USB cable to connect to PC.
Download the Verizon update and recovery software from Verizon on Chrome NOT Microsoft Edge (flags as corrupt on Windows 10). Windows smartscreen filter flags the software. Ignore that and to the left of the pop up there is a place to click to run anyway. Setup program as normal and close setup.
Now to the bricked phone.
Plug phone into turbo charger for this as battery drain is an issue.
Verizon walked me through the recovery bootloader to get to erase and reinstall phone software:
Press and hold both the power button and volume down together til it boots to the bootloader.
Next press the volume down button to recovery. Press power button. A screen comes up with no command. No worries
Press and hold power button then press volume down and release. This brings up the system restore options.
Press volume down to erase and reinstall. Then volume down twice to where it says system and personal settings. Press power button.
This wipe the phone and will make so it will boot up with errors. Just be patience and tap OK every now and then as it will have multiple errors (for me com.Motorola.system.main error), phone will be sluggish and phone will get warm.
Once errors are bypassed. Setup phone as normally through the prompts. It will be sluggish and time consuming.
Once you get to the home screen. Get ready to plug to use windows 10 PC to recover phone.
Open the Verizon software once it is up plug in phone and wait. Til you see that it is recognized shows Droid turbo 2 version 24.14.11 update available.
If you get this far you can, you can unbrick the phone.
Click update and this may take awhile 45 minutes for me.
It downloads the files to the phone over the USB cable. Decompresses the files on the phone. Then the phone will reboot to the bootloader screen. Don't worry it updates from there instead of traditional OTA Android man with spinning globe.
It updated 30 items for me on the Verizion program. It took about 30-45 minutes to update over USB. The update finished and my phone is unbricked.
No problems with the USB update.

SM-T705 Bootloop

Alright. I've not used this device for a while but now I'm trying to fix it. So far :
1. Device goes on a constant bootloop.
2. I can boot the device if I hold onto the power key. If I let go, it just turns off immediately
3. Can't select anything in bootloader since if I let go of power key (which is to select) it just turns off
4. Tried factory resetting, it's now reset but problem persists
5. When in Download mode, it seems to be able to keep itself on however Odin doesn't seem to detect it. (Windows chimes that a new device is connected (sound only); no warning that device is "malfunctioning", doesn't show up in device manager)
6. Banging the side with the power button also didnt work lol
Extra:
If I put tape on the power button it is able to run perfectly fine. Any ideas?
I'm honestly guessing its a sticky power button. Battery problem is probably not the cause since it's able to hold up normally in Download mode.
Any help is appreciated, really damn confusing. I've never seen a post as such, so if I get this resolved hopefully others can repair theirs aswell.
Bump
Same issue
Exactly the same issue here.
I've even replaced the battery, didn't help.
Did you repair it somehow?

Note is stuck in a bootloop - and I can't seem to install recovery/not sure if it's corrupt

Hey all,
Hope you've been keeping safe and well.
So I was flashing the new PixelExperience ROM - and seems like I made an error somewhere along the way.
I'm looking to return to stock, and then give the process another shot - but at the moment my phone is stuck in a bootloop.
The bootloader is unlocked - and the boot goes through the following screens before rebooting:
1. Samsung Logo
2. "The phone's bootloader in unlocked....Press power key to continue"
3. Samsung Note 10+ Logo Screen.
I'm trying my best to try and boot into either download or recovery mode, but to no avail - it just restarts the bootloop on each combination I've tried.
Any solutions on how to get moving with this?
Thanks!
rajalot said:
Hey all,
Hope you've been keeping safe and well.
So I was flashing the new PixelExperience ROM - and seems like I made an error somewhere along the way.
I'm looking to return to stock, and then give the process another shot - but at the moment my phone is stuck in a bootloop.
The bootloader is unlocked - and the boot goes through the following screens before rebooting:
1. Samsung Logo
2. "The phone's bootloader in unlocked....Press power key to continue"
3. Samsung Note 10+ Logo Screen.
I'm trying my best to try and boot into either download or recovery mode, but to no avail - it just restarts the bootloop on each combination I've tried.
Any solutions on how to get moving with this?
Thanks!
Click to expand...
Click to collapse
Timing will be the key. To help out, boot up as you have been, but as early into the boot cycle press and hold the Vol - and power button for up to 5 seconds (until phone manually shuts off) [it will actually reboot the phone])), then the instant it powers off and begins to power back on (try a few times to get used to the timing) press and hold the key combination for recovery or download mode. In my experience whatever combination you go with while booting, the power button only needs to be held for the first 5 seconds or so of the combo button press/hold.
The other button, Vol+ or Vol- should constantly be held until desired mode begins to load.
louforgiveno said:
Timing will be the key. To help out, boot up as you have been, but as early into the boot cycle press and hold the Vol - and power button for up to 5 seconds (until phone manually shuts off) [it will actually reboot the phone])), then the instant it powers off and begins to power back on (try a few times to get used to the timing) press and hold the key combination for recovery or download mode. In my experience whatever combination you go with while booting, the power button only needs to be held for the first 5 seconds or so of the combo button press/hold.
The other button, Vol+ or Vol- should constantly be held until desired mode begins to load.
Click to expand...
Click to collapse
Thanks for your quick and detailed reply man, appreciate it.
Still trying, new cords, ports, the whole buffet. Will keep at it.
Major flag though - my PC doesn't recognise the phone anymore, checked the USB ports in Device Management and nothing comes up. I've tried different cords and ports to no avail.
I have a feeling that because the device doesn't think it's not plugged in - it doesn't boot into recovery.
Just another detail - the flash goes on just before the reboot. Does this signify anything?
rajalot said:
Thanks for your quick and detailed reply man, appreciate it.
Still trying, new cords, ports, the whole buffet. Will keep at it.
Major flag though - my PC doesn't recognise the phone anymore, checked the USB ports in Device Management and nothing comes up. I've tried different cords and ports to no avail.
I have a feeling that because the device doesn't think it's not plugged in - it doesn't boot into recovery.
Just another detail - the flash goes on just before the reboot. Does this signify anything?
Click to expand...
Click to collapse
I'm not familiar with any significance the flash may point to. You've probably already done this.....but be sure to reboot PC....
Have you tried booting to recovery yet?

Bricked lg g820UM

I've bricked my g8 a long time ago.
If i recall correctly, custom rom caused it to bootloop.
And i accidentally wipe all of the partitions.
Could anyone share a copy from their phone?
Also it doesn't react to pc anymore, drivers doesn't help too.
Well...com6 appears for a few sec when booting, but quickly disappears.
I am not sure if i forgot how to enter edl mode.
But if not that's not working as well.
neither is download mode.
Any ideas?
Sorry, no backup to share, but a couple of suggestions...
1. Recovery from a brick, including a scenario with totally wiped out partitions - this should guide you step by step through the process:
https://forum.xda-developers.com/t/tutorial-rescue-from-hard-brick.4351389/
2. EDL mode (saved if from one of the guides a while ago, both options worked for me):
Hold Vol- and Power together, when the phone screen turns off to restart begin quickly pressing the Vol+ but keep holding Vol- and Power.
Here is a youtube video of how to boot to EDL:
Alternatively, with phone off, plug in usb cable and wait for the charging symbol to start flashing, then hold Power and Vol- together and start tapping Vol+. Sometimes it's easier that way.

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