Hi,
My LG Optimus Black P970 is locked in boot loop and I can't fix it.
I did the whole procedure from this topic, until the last SFT screen with the message 'Download Complete' written in green. But the phone restarts and gets into boot loop again.
I tried to repair the phone with the LG Mobile Support Tool, but it didn't work either. In fact, after this last procedure the LG logo stopped appearing, now the screen just lights up (but does not show anything) and buttons LED blink.
What do I do?
Thank you
Initialization
Do yo turn off completely the phone and connect the usb cable without battery?
Flash ICS
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Try smartflashtool a v20 firmware with CWM.Flash it then boot to recovery.From there,Wipe Data/Factory Reset and then reboot
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BlackPie said:
Try smartflashtool a v20 firmware with CWM.Flash it then boot to recovery.From there,Wipe Data/Factory Reset and then reboot
Sent from my LG-P970 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Thanks everyone for the replies. After several firmwares, I tried Europe V20S and it worked, at least partially. The boot loop is gone, but another problem appeared.
Now the screen is splitting into several. I think it might be a firmware conflict (for trying to install different firmwares repeatedly - do not know if I'm talking silly, noob here) and a wipe data / factory reset would help.
So I tried to follow this topic, since Optimus Black doesn't have a keycombination to get to Recoverymode on booting, but It didn't work.
Is there another way?
Thanks
Related
I have been using zeus v7.6 perfectly untill today. While i was texting someone the screen started wobbling arround. (behaving a bit like the windows xp error message when you move it arround and it leaves a trail behind it). i tried restarting in recovery mode but freezed on the lg logo, having a small faint wite line at the bottom of the screen. I have tried smartflash tool with no succes, and i have also tried the script from the cotkey, but it gets stuck at the first step. Also, i cannot interact with the KDZ updater ... I could really use some help, as i cannot afford a new phone :-/
HeinekenAmstel said:
I have been using zeus v7.6 perfectly untill today. While i was texting someone the screen started wobbling arround. (behaving a bit like the windows xp error message when you move it arround and it leaves a trail behind it). i tried restarting in recovery mode but freezed on the lg logo, having a small faint wite line at the bottom of the screen. I have tried smartflash tool with no succes, and i have also tried the script from the cotkey, but it gets stuck at the first step. Also, i cannot interact with the KDZ updater ... I could really use some help, as i cannot afford a new phone :-/
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Click to collapse
Have you tried to remove battery and connect the phone by usb to pc, pressing vol + button?
danielr18 said:
Have you tried to remove battery and connect the phone by usb to pc, pressing vol + button?
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Click to collapse
Yes, i have entered S/W mode. Smartflash tool finds my phone, i set the CP and AP bin, it tells me it finished with the ""TADA"" noise and my phone restarts... well, it doesnt start, it just stays on the lg logo with the lights flashing :-/. I have tried many different versions but none starts :-/ Thank you for replying btw
AW: [Q] Bootlooping on LG optimus Black
HeinekenAmstel said:
Yes, i have entered S/W mode. Smartflash tool finds my phone, i set the CP and AP bin, it tells me it finished with the ""TADA"" noise and my phone restarts... well, it doesnt start, it just stays on the lg logo with the lights flashing :-/. I have tried many different versions but none starts :-/ Thank you for replying btw
Click to expand...
Click to collapse
B2C app and emergency recovery? The lg update tool...
Sent from my LG-P970 using xda app-developers app
N00BY0815 said:
B2C app and emergency recovery? The lg update tool...
Sent from my LG-P970 using xda app-developers app
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I have tried it allready in the past with no succes :-/ idk why, but last time i managed to unbrick it it had quite a bit of luck involved... my basic problem is that im from a laptop and its in greek. theres something wrong with the language and i can only see symbols ... ill try again in the evening and ill let you know
Ran the KDZ updater but phone stiil stays on the lg logo...
Still unsuccessfull... Here is the log file:
AW: [Q] Bootlooping on LG optimus Black
HeinekenAmstel said:
Still unsuccessfull... Here is the log file:
Click to expand...
Click to collapse
Looks strange... do you also have a log of sft? And do you run those programs as admin? You re on XP right? Did you already disable your antivirus? Try another usb port/pc? Are you sure yourr files are good? Maybe dl the v20s from my noob how to and compare md5 sums afterwards.
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no, i have not tried disabling antivirus and i am using windows 7. i will disable antivirus now and send you the SfT Log
Smart Flash Log
Here is the Smart Flash log
AW: [Q] Bootlooping on LG optimus Black
HeinekenAmstel said:
no, i have not tried disabling antivirus and i am using windows 7. i will disable antivirus now and send you the SfT Log
Click to expand...
Click to collapse
Did you run sft as admin? And follow the readme? You have to disable something in the device manager.
Sent from my LG-P970 using xda app-developers app
great, lg emergency recovery tool tells me this model is not supported for upgrading =.=
Similar problem, I was on Huexs´s 6.4, was rooted, recovery was working, then I flashed v30d by tantrums, was using it without problems, then some problems with sd card, from that point I am not able to run recovery, so I tried to flash patched v20 with Smartflash, but when it goes to rebooting, it always stay in bootloop. Only way for me is flash v30b, then root it with Unlockroot, but thats all, I can normaly use phone rooted, but I am not able to push to phone recovery image, so I can not flash any zip file ( like new kernels. etc.).
Managed to flash V30b
i managd to flash the v30b by the kdz updater but... Everything was working normally. I shut off the phone so i can go to sleep and i put it to charge. the picture i got is the lg logo with a white faint line down the bottom of the screen again. I unplug the charger and remove the battery. The next morning it worked perfectly again for aprox. 9 hours, that i was at school. Then i try texting my gf and the pictures below show what happened... WTH? Any help would be deeply appreciated :-/
OMG are you getting the same problem as redy ? O.O That crazy screen looks like his. :/
Sent from my LG-P970 using Tapatalk 2
what prob has redy got?
I got some news about this prob. When it starts, if i lock the device am continue after a while it works ok again for a bit
Sent from my half working LG-P970 using xda app-developers app
@robusto try flashing v30B. then root your OB and flash TWRP recovery. You can do it like this:
1. Install goomanager
2. Open goomanager and provide root permision
3. Hit menu and choose 'Install OpenRecovery'.
Now you have TWRP Recovery and you should be able to flash any .zip file.
It worked for me.
(or you can get twrp recovery just by pushing the twrp recovery image file using terminal emulator).
Good luck!
(sorry for my bad english x_x).
Sent from my LG-P970 using xda premium
AW: [Q] Bootlooping on LG optimus Black
GPaul said:
@robusto try flashing v30B. then root your OB and flash TWRP recovery. You can do it like this:
1. Install goomanager
2. Open goomanager and provide root permision
3. Hit menu and choose 'Install OpenRecovery'.
Now you have TWRP Recovery and you should be able to flash any .zip file.
It worked for me.
(or you can get twrp recovery just by pushing the twrp recovery image file using terminal emulator).
Good luck!
(sorry for my bad english x_x).
Sent from my LG-P970 using xda premium
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Click to collapse
I am quite sure this wont work... security error...
Sent from my LG-P970 using xda app-developers app
any idea on how can i restore my imei from the S/W upgrade screen?
the lg united tool reads wrong imei and does not even start upgrading.
I am now on stock V30B Europe, rooted by unlockroot, uninstalled garbage and apps, whitch I dont need, using Holo launcher and LMT and am satisfied, bechmark with antutu 3100. Only I am not able change kernel, what could be phone speed up, but nevermid. I can live with it. Only can be good to convert some kernel.zip to same file, whitch can be flashed with kdz flasher or smartflashtool. Anyway thanks for ideas.
---------- Post added at 06:07 PM ---------- Previous post was at 05:53 PM ----------
HeinekenAmstel, try to left out of phone the battery for one day, then try to flash kdz v30b for your country from here http://lg-phone-firmware.com/index.php?id_mod=1, but connect phone to PC without battery in. And may be is good to do it on PC with WIN XP. For me this is working better then on PC with WIN7. Good luck.
i really hope so. back then i had a security error with stock ics for ku5900. now i tried to reflash. now im just stuck at lg logo. no blinking lights. what couldve gone wrong?
What exactly have u done? How did u flash it?
Before you do Flash.. Try wipe all data. System and cache.
Sent from my SGH-T989 using Tapatalk 2
ouroboros12 said:
i really hope so. back then i had a security error with stock ics for ku5900. now i tried to reflash. now im just stuck at lg logo. no blinking lights. what couldve gone wrong?
Click to expand...
Click to collapse
CWM has a recovery mode. I had a nasty error like that, and on the 970 I just rapidly pressed the volume down key (or something like that) and the phone returned to CWM.
the stock ics you flashed maybe locked that's why your getting security error from LG, I've tried this when I flashed using smartflash with the kdz files. Just make sure you dont inject CWM into the file when extracting it to .bin & .fls file so that you won't get the error
Hi,
After flashing the EternityProject's CyanogenMod 10.1 and install Boot Recovery from CWM Touch recovery v6.0.1.1, it went into bootloop animation after reboot.
Did data wipe/factory reset in Android Recovery Mode still went into bootloop.
So tried to recover using original firmware but getting black and white lines on the screen during KDZ software update. Now, I'm stuck.
Anyone has resolution?
pico2 said:
After flashing the EternityProject's CyanogenMod 10.1 and install Boot Recovery from CWM Touch recovery v6.0.1.1, it went into bootloop animation after reboot.
Do data wipe/factory reset in Android Recovery Mode still produce bootloop
Now tried to recover but getting black and white lines on the screen during KDZ software update to flash original firmware.
Anyone has resolution?
Click to expand...
Click to collapse
Did you try with battery inside or without? I once was in your situation, putting my phone in sw mode but I got that empty screen. Turned out I inserting the battery solved the problem.
Sent from my LG-P880 using Tapatalk 2
pico2 said:
Hi,
After flashing the EternityProject's CyanogenMod 10.1 and install Boot Recovery from CWM Touch recovery v6.0.1.1, it went into bootloop animation after reboot.
Did data wipe/factory reset in Android Recovery Mode still went into bootloop.
So tried to recover using original firmware but getting black and white lines on the screen during KDZ software update. Now, I'm stuck.
Anyone has resolution?
Click to expand...
Click to collapse
Errr...seems like you did not put battery back in phone while flashing kdz...
hernestwisnu said:
Did you try with battery inside or without? I once was in your situation, putting my phone in sw mode but I got that empty screen. Turned out I inserting the battery solved the problem.
Sent from my LG-P880 using Tapatalk 2
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Click to collapse
Updated with my post below.
Great! It worked with battery insert before booting into SW Upgrade mode and before the KDZ software upgrade.
pico2 said:
Great! It worked with battery insert before booting into SW Upgrade mode and before the KDZ software upgrade.
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Click to collapse
Nice to hear that
Sent from my LG-P880 using Tapatalk 2
Hi everyone,
I have had Zeus 7.6 (GB based) for a long time, but the other day it started freezing a couple of times a day, and other weird things, so I thought: it's time to give ICS a go.
I then used SmartFlash Tool to install the latest official ICS for Spain... and there started my nightmare. Apparently the install went fine, but now every time the phone boots, I get the initial Android Install screen, which I can configure, but if I enter my google account, the phone goes crazy and I keep seeing warnings of processes crashing (even android.core or something like that). If I turn off my phone, and on again, it will get stuck in the LG logo. Then I remove battery, wait a while, turn on... and it boots again, but cannot do much.
I have tried doing hard reset using LG hidden menu, also from the Android settings did a reset, and everything seems to go well, but the 2nd time it boots, it always freezes in LG logo.
I have flashed Froyo, Gingerbread and ICS versions using smartflash tool, but no matter what, even when it seems to go ok, the version that always boots is ICS (after the software is upgraded, there is a reset of the phone, and LG logo again).
I have even tried recovery using the official LG mobile support tool.
Last thing I tried I read somewhere: I boot pressing Vol - and G button... and I only see a robot lying on the ground (scary!) with a warninig sign, can't get past it.
My guess is that something is corrupt, but I don't know how to do a full wipe without being able to go to recovery.
Can you suggest anything else to try? I'm really lost here and wouldn't want to be forced to buy a new phone yet!
Thanks so much in advance
If you have cwm backup of your 2.2 or 2.3 then you can try one more thing....install cwm patched 2.3 with sft and when it completes flash it will take you to cwm ...now directly restore your old cwm backup
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If it still is zeus, simply keep pressing g key during boot and you should be able to get into recovery. Or is it always ics, that boots?
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Yes, it's ICS (Spain version) that boots. I had it flashed after Zeus, and now no matter which ROM I flash, I have that ICS version (the flashing always goes fine, but when the phone reboots it hangs at LG logo)
Still trying to find a way to revive my little OB...
Thanks everyone for your suggestions!
N00BY0815 said:
If it still is zeus, simply keep pressing g key during boot and you should be able to get into recovery. Or is it always ics, that boots?
Sent from my LG-P970 using xda app-developers app
Click to expand...
Click to collapse
It happens when you flash ICS....for me when I went back to 2.2 or 2.3 it failed to detect my internal memory....but as I always do a android backup. ...I flashed patched 2.3 and did a restore of my backup and my phone was all working again...that is why I suggested to use a backup if you have.
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rajeshmk2012 said:
If you have cwm backup of your 2.2 or 2.3 then you can try one more thing....install cwm patched 2.3 with sft and when it completes flash it will take you to cwm ...now directly restore your old cwm backup
Sent from my LG-P970 using xda app-developers app
Click to expand...
Click to collapse
Not even this method worked? This is usually my "safety procedure", I always keep a v20s patched with CWM on my PC, to flash with SFT when something goes wrong. Then, when it ends, the phone reboots in recovery...
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von Mandrake said:
Not even this method worked? This is usually my "safety procedure", I always keep a v20s patched with CWM on my PC, to flash with SFT when something goes wrong. Then, when it ends, the phone reboots in recovery...
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Click to expand...
Click to collapse
You also need to have a nandroid backup to restore. ...did you do that
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hi!
i buy a used Optimus Black, now I have a problem, gets stuck in the boot logo amd blink lights, even after having used SmartFlash, someone will have an idea what to do?
kemish said:
hi!
i buy a used Optimus Black, now I have a problem, gets stuck in the boot logo amd blink lights, even after having used SmartFlash, someone will have an idea what to do?
Click to expand...
Click to collapse
Is it a patched v20 rom that you flashed? Flash again using SmartFlash and once the phone boots, it will take you to the CWM recovery screen and then do a factory reset and wipe Dalvik cache. Then reboot your phone and it will be just fine. BTW read the "Noob how to" section in the Q&A it helped me a lot.
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jantdroid said:
Is it a patched v20 rom that you flashed? Flash again using SmartFlash and once the phone boots, it will take you to the CWM recovery screen and then do a factory reset and wipe Dalvik cache. Then reboot your phone and it will be just fine. BTW read the "Noob how to" section in the Q&A it helped me a lot.
Sent from my LG-P970 using XDA Premium 4 mobile app
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I try very many roms, and nothing worked, seems like physical problem, I send for service, well thank you very much
kemish said:
I try very many roms, and nothing worked, seems like physical problem, I send for service, well thank you very much
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Click to collapse
The patched v20 bin/fls files should work for you. If not, try the hard reset unbricking method. You're welcome.
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