I've been very frustrated, its only been like 1 year since I bought it. First, I got bootloop out of nowhere after updating (I got bootloop just 1 week after i picked up the phone from service center, the audio jack was broken at that time), then the phone is not detected on any pc. I tried downgrading from SD card, and it works at first, then the phone restarted itself, then I got bootloop again. I tried the same method (upgrading and then downgrading) then it showed warning that the phone is in Red State when i entered Android Recovery. It says the phone is in Red State, it is corrupted and cannot be trusted, it gave me a link that doesnt solve my problem. The question is, is this the end? do I still have hope? or should I give up and let it die?
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Hello
E recently bought an LG Optimus Black (P970). It had stock rom 4.0.4 and the guy told me that it has CWM recovery on it, but i never tried.
It was working well, but one day it started to freeze quite often. One day i inserted another sim card than the one i was using before and it freezed. Restarted the phone but it froze again. The third time it didn't even boot, but instead the green android appeared with his belly open and the exclamation mark hanging out of it.
I tried a factory reset, but the process lasted more than 15 minutes so i turned off the phone.
Since then, when the phone starts the following happens: LG logo appears, Android guy appears with the loading sign in his belly and after 3 seconds the lg logo again.
I was able to access the SWUpdate menu and to flash a stock ROM with LG MobileSupportTool. When the update process ended with success, the phone should have restarted itself but it didn't. Instead the lg logo appeared again.
Trough the SWUpdate menu i managed to flash other stock ROMs on it with the SmartFlashTool but the same thing happened as before. (Successful flash, but the phone didn't restart. I even managed to flash a ROM on the device which had CWM recovery patched to it.
After this i created myself a 3in1 service cable with 56kohm,130kohm,910kohm resistors. I managed to access the SWUpdate menu with it, so i knew the cable was good. But i couldn't read from the device with CDMA tool. CDMA made the connection, but couldn't read.
I took the phone to the service, but they told me that the phone didn't respond to the JTAG either. They assumed that the motherboard is broken.
I didn't make peace with the idea that the motherboard is broken. I need help. Currently my only option is the take the phone to another service and hope that they are more capable than the previous ones.
Thank you in advance.
Hello everybody,
as of yesterday I am in the Stone Age again using an old phone of mine.
What happend? No clue - the phone went off after recieving a SMS message in power saving.
When trying to put on: No reaction.
Connect to Energy Outlet: LED RED - leave hours - LED OFF
Retry on Button: No reaction.
Tryed following I read here: Press Red Reset before conecting to Laptop - It did something good! I hear the sound of connection. No Icons apear though! No recognition of device on the File Manager. Sound comes frequently, connect - disconnect - loop I guess.
Strange Symtoms received days before: I was in Japan on visit. Recieved about 30 messages of the program Google App, that it had to shut down. Asking confirmation. It never ended, so I turned phone of. After turning on, everything ok. Thought it had to do with local google in Japan.
Battery: loading felt very hot, phone felt hot. But after disconection worked.
Returning form Japan to home: google.app close down problem again. Endless confirmation. Stoped loop with disconection again.
Made reboot with red button on back.
PHONE lifeless.....no reaction, help! How to acces, so I can flash? or is it a battery problem? (ordered just one just to try)
Rom Installed: SLXROM_v11-Lenovo_P780 - in the year 2013.
101Maclaren said:
Hello everybody,
as of yesterday I am in the Stone Age again using an old phone of mine.
What happend? No clue - the phone went off after recieving a SMS message in power saving.
When trying to put on: No reaction.
Connect to Energy Outlet: LED RED - leave hours - LED OFF
Retry on Button: No reaction.
Tryed following I read here: Press Red Reset before conecting to Laptop - It did something good! I hear the sound of connection. No Icons apear though! No recognition of device on the File Manager. Sound comes frequently, connect - disconnect - loop I guess.
Strange Symtoms received days before: I was in Japan on visit. Recieved about 30 messages of the program Google App, that it had to shut down. Asking confirmation. It never ended, so I turned phone of. After turning on, everything ok. Thought it had to do with local google in Japan.
Battery: loading felt very hot, phone felt hot. But after disconection worked.
Returning form Japan to home: google.app close down problem again. Endless confirmation. Stoped loop with disconection again.
Made reboot with red button on back.
PHONE lifeless.....no reaction, help! How to acces, so I can flash? or is it a battery problem? (ordered just one just to try)
Rom Installed: SLXROM_v11-Lenovo_P780 - in the year 2013.
Click to expand...
Click to collapse
Seems to be a motherboard problem!
Hi stympy
Need to to identify if this is motherboard issur or ROM.
My phone purchased in Jan 2014. It has been updated to official rom 4..2.2 using OTA. No other unofficial ROM being install before. In Jan 2015 the screen broken so we send in to local repair shop.
Problem started here, after repaired (just change lcd screen) the phone behave restart/blank once a while. Due to different problem the workshop does not cover the warranty (due to different issue). But the workshop recheck if problem with connection of lcd and motherboard. No problem here. In March 2015 it become unusable because once power on P780 8GB (international version), it keep bootloop at lenovo startup and the logo yet to flip it gets reboot again.
In an attempt to revive it (hope it is ROM issue), hard reset done but still the same. Try to flash with v5 (manually install drivers MTK and USB) but v5 cant detect the phone. Device manager shows the driver installed successfully but with a warning sign. Properties says something like "the device does not start correctly". FYI, I cant access the phone's SD card from My Computer. Sometimes it appear a Lenovo logo to install some software (red icon)
So is there any "hard reset" i can do or it is the motherboard issue? Worse come to worse, Is it advisable to change motherboard?
expzero said:
Hi stympy
Need to to identify if this is motherboard issur or ROM.
My phone purchased in Jan 2014. It has been updated to official rom 4..2.2 using OTA. No other unofficial ROM being install before. In Jan 2015 the screen broken so we send in to local repair shop.
Problem started here, after repaired (just change lcd screen) the phone behave restart/blank once a while. Due to different problem the workshop does not cover the warranty (due to different issue). But the workshop recheck if problem with connection of lcd and motherboard. No problem here. In March 2015 it become unusable because once power on P780 8GB (international version), it keep bootloop at lenovo startup and the logo yet to flip it gets reboot again.
In an attempt to revive it (hope it is ROM issue), hard reset done but still the same. Try to flash with v5 (manually install drivers MTK and USB) but v5 cant detect the phone. Device manager shows the driver installed successfully but with a warning sign. Properties says something like "the device does not start correctly". FYI, I cant access the phone's SD card from My Computer. Sometimes it appear a Lenovo logo to install some software (red icon)
So is there any "hard reset" i can do or it is the motherboard issue? Worse come to worse, Is it advisable to change motherboard?
Click to expand...
Click to collapse
Hi. Before i give a verdict with your phone i need to see something. Can we do a team viewer sesion?
Send me an PM with id and pass in 7 hours from this message! .
I need an information about your PC or notebook. What windows do you use?
This happened to me several times exactly the same condition
What you have to do: Do not never charge it and left it for several days until the battery is discharged -With pressing the power button from time to time-
Then recharged I think this work
I advise you to use STOCK ROM
Hi sym,
We need another time to teamviewer. Just saw your reply.
But i believe u cant get anything as from my side i cant even get any respond from the phone with drivers installed.
u got pm
Good night everybody! my dad got this phone a while ago, after like 2 months he told me the phone was going crazy, I checked and was getting FC´s everywhere so get into recovery mode to wipe everything and there´s where problems started. I downloaded stock firmware and installed it but phone wouldn´t boot up, so my dad gave it to a guy that ``fixed it´´ but the problem came back after two weeks or so, the guy ´´fix it ´´ again but when I looked into the phone had no IMEI so didn´t recognized the sim card, the third time the guy got back the IMEI, that was long ago and today when I booted up the phone is having a weird behavior, sometimes gets stucked at the bootloader unlock warning, I restart it and after a couple of times starts the boot up animation but gets stucked at the M and like waving part.
I´ve tried getting into recovery mode but when I press any of those options boots to the warning bootloader. I got it to completley turn on when I pressed the recovery option; not expecting that to happened, but again some force close windows and decided to reboot it to see if would fix it but again to the same place stuck at the warning.
I´ve read many posts here im xda and outside but can´t find a solution. I tried to side load the firmware but looks like the pc doesnt recognize the phone´, when i got it boot up I connected it to the pc but didn´t recognized it, I installed the drivers and still the same.
Guess I need to get it recognized by the pc in order to try to side load a firmware. Sorry for the long post and any mistake, if someone can help to bring back to life this little fella.
Hey guys, not sure if there was another thread with this issue but I couldn't find it.
Yesterday at work my phone suddenly froze and then restarted into a bootloop and this is what I did:
I pulled the battery out for a good 10 minutes and tried it back again and it was the same thing again with the bootloop.
I tried to put it in Safe Mode and it started up and then after awhile it froze again and jumped back into the bootloop and wouldn't go back into Safe Mode again.
This time I tried clearing the cache and that didn't work.
Next thing I tried was to Factory Data Reset the phone and it came up after that where I had to go through the whole setup wizard and everything like it was a new phone again. But not long after the phone was running fine it started restarting every couple minutes or if I go in What's App or something else.
I figured that something is wrong with the system itself so I downloaded the 22A update for the VS990 on my laptop (where the version 11B was currently on the phone) to try and update it and honestly that was a bad move because when I tried to flash VIA LGUP, the phone restarted during the process and now I'm getting this on at the top left corner of the logo screen then it reboots continously:
Boot verification failed!!
- cause: MISMATCH_SIG_LEN
Can anyone please help me out, love this phone so much and not looking to get a new one or change it anytime soon :crying::crying:
Are you in warranty or have insurance with extended warranty? Sounds like you'll have to contact VZW and get a replacement. Hopefully you're covered.
Sent from my VS990 using Tapatalk
I'm really not sure as I bought the phone 2nd hand from Ebay, bought it in August so probably., so would have to contact the original owner and see what he has to say. Sigh only if I could get it to stay on the logo screen at least without restarting I could try flashing it again.
Hello all, got a bit of a strange issue here. So I was using the 30b release from runningnak3d, https://forum.xda-developers.com/tmobile-lg-v10/development/h901-t-mobile-nougat-v30b-twrp-t3639203
I was selling my v10, so I did a reset, skipped or hit next to everything, and verified that all was working. I sold the phone and a couple days after the buyer got it, he told me it was bootlooping. I asked what he did and of course the first time he said nothing, just turned it on. After more conversation, he said when he got it it booted and after a while told him an upgrade was available. He said he accepted the upgrade, and afterwards got the bootloop.
I got the phone back today to try to fix it and give it back to him. Here's what I have found. Definitely bootlooping, stops at T-Mobile logo and reboots. It does still have the unlocked bootloader, still shows the warning right at boot. TWRP is gone! I booted to recovery, answered Yes to those 2 questions, and it did a reset instead of loading TWRP.
I really have no idea what he did, whether is was an OTA update or maybe he tried to load something on his own.
So, is there any hope of getting this thing going again? So far I was able to boot it into download mode, but it won't respond to any fastboot commands. My computer detects it, but in computer management it says LGE USB modem or something like that. When I try to regular boot, the computer does detect the phone, but it doesn't get far enough along to issue ADB commands. I'm thinking it's a paperweight at this point, so I'm game to try whatever.