Develop Bugs

[Q] What a mess I'm in

So I was rockin' my 4.1 rom earlier and listening to music when my headphone cord got stuck on my chair and my phone fell off my desk to the ground. Everything was still going but my touch screen stopped working. I hit the unlock (power) button and it would show the correct unlock screen but I could not slide to unlock.
I pulled the battery and ever since then my phone would not boot. Stuck in boot loops, etc. I tried restoring from Nandroid (even back to my 4.0.4 image) and it would get stuck on unable to load /data at the end. I eventually went back and installed Nexus Toolkit 7.0 on my home pc and proceeded to load the stock 4.0.2 back on and root. However, it still is stuck in a boot loop. I'm now at a loss of what to do. My sd card has already been wiped and my phone is still not booting.
I'm at your mercy if anyone can give me any direction - please!

jedil1c1ous said:
So I was rockin' my 4.1 rom earlier and listening to music when my headphone cord got stuck on my chair and my phone fell off my desk to the ground. Everything was still going but my touch screen stopped working. I hit the unlock (power) button and it would show the correct unlock screen but I could not slide to unlock.
I pulled the battery and ever since then my phone would not boot. Stuck in boot loops, etc. I tried restoring from Nandroid (even back to my 4.0.4 image) and it would get stuck on unable to load /data at the end. I eventually went back and installed Nexus Toolkit 7.0 on my home pc and proceeded to load the stock 4.0.2 back on and root. However, it still is stuck in a boot loop. I'm now at a loss of what to do. My sd card has already been wiped and my phone is still not booting.
I'm at your mercy if anyone can give me any direction - please!
Click to expand...
Click to collapse
Try restoring using ODIN
the process wipes all data, but since you said its already wiped that shouldnt be a problem for you.
IF it still doesnt work, then it isnt software, but rather hardware, and you should probably go get that fixed
good Luck
Return To Stock Using Odin:
http://forum.xda-developers.com/showthread.php?t=1620036

I have Verizon GN, can I still use ODIN?

jedil1c1ous said:
I have Verizon GN, can I still use ODIN?
Click to expand...
Click to collapse
Yes you can still use ODIN,
as ODIN is software for samsung phones,
just make sure you use the zerizon file ratehr than the sprint..
or there could be dragons ahead
but there will always be a way to return to stock
Although, i would use this, because it is mostly aimed towards Verizon Users..
http://www.galaxynexusforum.com/forum/rescue-squad/4707-how-return-stock-using-odin-vzw-gsm.html
Sorry for assuming you had sprint..
I dont know what was going on in my head

I found the correct VZW version within XDA... thanks for the tip... I actually have it running right now (fingers crossed).

Good Luck,
hopefully you get your phone back online

Wolfbeef123 said:
Good Luck,
hopefully you get your phone back online
Click to expand...
Click to collapse
Unfortunately, even after using ODIN I'm stuck in the boot loop. It must be busted hardware. Guess I will have to use the Samsung warranty service. Stink.

jedil1c1ous said:
Unfortunately, even after using ODIN I'm stuck in the boot loop. It must be busted hardware. Guess I will have to use the Samsung warranty service. Stink.
Click to expand...
Click to collapse
If you got your phone from Verizon, try them first. Easier than dealing with Samsung directly

harveydent said:
If you got your phone from Verizon, try them first. Easier than dealing with Samsung directly
Click to expand...
Click to collapse
I actually bought it through Amazon and called them and they said go to Verizon even without the purchased insurance.
My phone looks mint though so I'm very hopeful that I will receive service from the Verizon store.

Does the lock icon show while looping? You might think about a shot in the microwave for 3 seconds (don't take me seriously.....well maybe)
good day.

chopper the dog said:
Does the lock icon show while looping? You might think about a shot in the microwave for 3 seconds (don't take me seriously.....well maybe)
good day.
Click to expand...
Click to collapse
I did flash lock it with ODIN... so the unlock icon does not show. It boots to the animation and then restarts after it shows for 5 seconds. I think the touch screen is malfunctioning and causing it to reboot.

Can you turn it off and then turn it on while holding volume down and up at the same time (i.e., can you boot into fastboot/bootloader?)
If so... it's not over yet.
However, if you dropped it it's probably hardware. But if you can get into the bootloader, at least you can lock it before bringing it in.

looks like your nand chip failed. had the same problem with my S2 and even a JTAG didnt fix it, had to send it to warranty to have the board replaced

[Q] LG Optimus G Stuck On LG Screen Need Help.

I was making a TWRP Backup when all of the sudden my phone just randomly turns off. I grabed my phone and it was really hot. Tried turning it on, but nothing happened. Then I connected it to the ac adapter and it turned on, but it would go to the LG logo, the screen turns black then it restarts. This does not stop unless I unplug it. I had previously made two backups before and nothing like this happened, but this time I enabled conpression<-------- This must have been what caused this. All I want to know is if this can be fixed or not. If it could be fixed I would be so happy if somone could tell me how to fix this. THANK YOU. P.S. THIS PHONE IS A BEAST. D

cgtrr34 said:
I was making a TWRP Backup when all of the sudden my phone just randomly turns off. I grabed my phone and it was really hot. Tried turning it on, but nothing happened. Then I connected it to the ac adapter and it turned on, but it would go to the LG logo, the screen turns black then it restarts. This does not stop unless I unplug it. I had previously made two backups before and nothing like this happened, but this time I enabled conpression<-------- This must have been what caused this. All I want to know is if this can be fixed or not. If it could be fixed I would be so happy if somone could tell me how to fix this. THANK YOU. P.S. THIS PHONE IS A BEAST. D
Click to expand...
Click to collapse
Can you boot into recovery and restore a previous backup?
Sent from my LG-LS970 using Tapatalk 2

cowfodder said:
Can you boot into recovery and restore a previous backup?
Sent from my LG-LS970 using Tapatalk 2
Click to expand...
Click to collapse
It does not let me go into recovery, the screen goes black then restarts. All I can do is go into fastboot and Download mode.

cgtrr34 said:
It does not let me go into recovery, the screen goes black then restarts. All I can do is go into fastboot and Download mode.
Click to expand...
Click to collapse
Likely bricked. Do you have flashing notification and capacitive lights? Have you LGNPST'd? If yes to both of those questions, you're in the same predicament as I was and hopefully you have insurance, because your phone is fried.

xboxfanj said:
Likely bricked. Do you have flashing notification and capacitive lights? Have you LGNPST'd? If yes to both of those questions, you're in the same predicament as I was and hopefully you have insurance, because your phone is fried.
Click to expand...
Click to collapse
I do have flashing notification and capacitive lights. But I don't know what LGNPST is.(sorry I'm new to this) this is my first android phone

cgtrr34 said:
I do have flashing notification and capacitive lights. But I don't know what LGNPST is.(sorry I'm new to this) this is my first android phone
Click to expand...
Click to collapse
Sounds like you are toast. Take it to Sprint and have em swap it out for ya. Hopefully you either have insurance or are within your 14-days to return it.

xboxfanj said:
Sounds like you are toast. Take it to Sprint and have em swap it out for ya. Hopefully you either have insurance or are within your 14-days to return it.
Click to expand...
Click to collapse
Will they swap a rooted and unlocked phone?

cgtrr34 said:
Will they swap a rooted and unlocked phone?
Click to expand...
Click to collapse
Sprint's policy on root is to document it but not do anything about it, so they would swap it. If you're worried, I can help you restore stock firmware.

xboxfanj said:
Sprint's policy on root is to document it but not do anything about it, so they would swap it. If you're worried, I can help you restore stock firmware.
Click to expand...
Click to collapse
How could I restore it to stock firmware. And also thank you for replying back and helping me out

cgtrr34 said:
How could I restore it to stock firmware. And also thank you for replying back and helping me out
Click to expand...
Click to collapse
I will PM you about that since it is against forum rules and perhaps laws to post copyrighted stuff here.

xboxfanj said:
I will PM you about that since it is against forum rules and perhaps laws to post copyrighted stuff here.
Click to expand...
Click to collapse
OK thank You so much!

cgtrr34 said:
I was making a TWRP Backup when all of the sudden my phone just randomly turns off. I grabed my phone and it was really hot. Tried turning it on, but nothing happened. Then I connected it to the ac adapter and it turned on, but it would go to the LG logo, the screen turns black then it restarts. This does not stop unless I unplug it. I had previously made two backups before and nothing like this happened, but this time I enabled conpression<-------- This must have been what caused this. All I want to know is if this can be fixed or not. If it could be fixed I would be so happy if somone could tell me how to fix this. THANK YOU. P.S. THIS PHONE IS A BEAST. D
Click to expand...
Click to collapse
WTF!!!!! I just bricked my phone in less then 24 hours of owning it. I just rooted and unlocked it and right after making a TWRP Backup and rebooting my phone wouldn't turn on and it was HOT AS HELL!!
I got it exchanged at Best Buy but now im scared to do anything with it.

shook187 said:
WTF!!!!! I just bricked my phone in less then 24 hours of owning it. I just rooted and unlocked it and right after making a TWRP Backup and rebooting my phone wouldn't turn on and it was HOT AS HELL!!
I got it exchanged at Best Buy but now im scared to do anything with it.
Click to expand...
Click to collapse
Same happened to me. The phone overheats in recovery, so do what you need to do and then get out of it.

xboxfanj said:
Same happened to me. The phone overheats in recovery, so do what you need to do and then get out of it.
Click to expand...
Click to collapse
Im on the new phone and Im using clockwork and all is fine so far. I definitely suggest guys stop using twrp.
Sent from my LG-LS970 using XDA Premium HD app

Restore to stock when stuck at LG logo screen
xboxfanj said:
I will PM you about that since it is against forum rules and perhaps laws to post copyrighted stuff here.
Click to expand...
Click to collapse
Would you please help me out to restore to stock from a stuck LG logo screen? I can't even boot into fastboot or recovery. I tried LGNPST number of tries with different .bin files with no luck. I also tried a lot of diff things, too. Please email me at [email protected]. Thank you very much!

phatjulie said:
Would you please help me out to restore to stock from a stuck LG logo screen? I can't even boot into fastboot or recovery. I tried LGNPST number of tries with different .bin files with no luck. I also tried a lot of diff things, too. Please email me at [email protected]. Thank you very much!
Click to expand...
Click to collapse
I suggest you TEP it.
Sent from my LG-LS970 using xda premium

phatjulie said:
Would you please help me out to restore to stock from a stuck LG logo screen? I can't even boot into fastboot or recovery. I tried LGNPST number of tries with different .bin files with no luck. I also tried a lot of diff things, too. Please email me at [email protected]. Thank you very much!
Click to expand...
Click to collapse
Pull battery using a torx t5 screwdriver and phillips #00 if you don't have insurance.

xboxfanj said:
Pull battery using a torx t5 screwdriver and phillips #00 if you don't have insurance.
Click to expand...
Click to collapse
What's the purpose of pulling battery out? Just a try? I'm gonna have to get it from Fry's tomorrow and try that first.

phatjulie said:
What's the purpose of pulling battery out? Just a try? I'm gonna have to get it from Fry's tomorrow and try that first.
Click to expand...
Click to collapse
Because your phone doesn't know if it needs to be in charging mode or booting. Pulling battery will fix it.
Sent from my LG-LS970 using xda app-developers app

I had a similar problem as you. Upon getting the phone I rooted and used the FreeGee app from the Google Play store to unlock the bootloader. Everything seemed fine and dandy, until one day when I let my phone's battery drain completely. Pluggin it in to a wall charger resulted in the failed boot where the LG logo flashes before going to a blank, but backlit screen. Luckily, the first few times this happened, through a combination of quickly plugging and unplugging the usb cord and holding the volume up+power button, I could get it into recovery (TWRP). Then a simple cache & dalvik cache wipe, and the phone would boot up as if nothing ever happened. Very strange.
Well yesterday this happened again, however, this time there was no getting the phone into recovery. My previous methods of button mashing and plugging and unplugging weren't working. So, I decided to bite the bullet and use LGNPST to get back to ZV7. Now, like you mentioned, this failed boot would automatically happen, without pressing the power button to turn it on. So it was difficult to get the phone to stay off. I found that with the phone unplugged, if you continue to press the power button until the blank backlit screen turns off, AND continue to hold the power button for an additional five seconds, the phone would stay off and not auto power on into the failed boot.
Once I was able to get the phone to stay off, I pressed the middle of the volume key to depress both volume up and down, and then plugged a usb cord that was attached to my computer. This powered on the phone into download mode. Following the LGNPST guide I was able to get to around 67% complete before my phone turned off and an error message flashed on the computer screen telling me to power cycle the phone and reconnect. Well, the whole 67%/85% LGNPST failure is apparently common and not indicative of an actual failure; HOWEVER, my phone became completely unresponsive. It wouldn't power on at all. It didn't matter if the usb was unplugged or connected to the computer or wall charger. So, I was forced to unplug the battery. I followed this tutorial and successfully disconnected and reconnected the battery cord, and the phone shot back to life. It even booted up into the factory stock ZV7 rom. I guess that LGNPST was successful. It looked like I was on my way to returning my phone to breezy's deodexed ZV9 stock rom that I was previously running.
I went ahead and re-rooted, ran the FreeGee app again, and rebooted into recovery. Then I made a backup and attempted to flash my new rom. Now, I think this is where I royally screwed up. I was pleasantly surprised to see my screen layout and all of my settings still intact after LGNPST back to ZV7 and thought I could just wipe the caches and ignore the factory reset and system wipe before flashing. Perhaps it was this, but part of me also thinks there might be something wrong with my battery draining extremely fast in recovery.
I proceeded to flash and all seemed good, but rebooting resulted in the LG logo failed boot that we have already discussed. So, I went ahead and repeated the LGNPST-re-root process numerous times (switching to the freegee 0.5 batch file instead of the app). Everytime after the first initial restore, I could never get my phone to enter recovery. As soon as I rebooted after using freegee, the phone would be soft bricked again. Sometimes I would get the LG logo thing, other times I would get the dreaded alternating flashing red notification light and soft keys. A battery pull was usually required in these circumstances before I could get back into download mode to start all over.
I was about ready to give up when I took to the LGOG irc channel. That's when Xboxfanj stepped in and helped me out IMMENSELY. Over the course of several hours, he walked me through flashing some partitions in ADB. At times it seemed like there was no hope and that I should have just returned the phone, but he failed to acquiesce, we pushed forth trying a couple of other bootloader options. The new bootloader appeared to have fixed the phones erratic behavior with powering on and off, but I had no rom to boot into and no recovery. Xboxfanj recommended using fastboot to flash over a recovery. Once in the new bootloader screen my Windows XP machine detected new hardware and wanted some drivers. I attempted to use the [ADB/FB/APX Driver] Universal Naked Driver 0.72, but XP indicated that I was missing 'winusbcoinstaller2.dll'.
I grabbed winusbcoinstaller2.dll from here and all was good. Fastboot recognized the phone, I was able to flash recovery and subsequently boot into recovery. From there I reformatted the system, wiped data/factory restore, wiped cache, wiped dalvik cache, and flashed breezy's ZV9 deodexed rom.
Fortunately, after around 7 hours, I am happy to say my phone is back to being rooted, unlocked, and running ZV9. It powers on and off properly and can get into recovery without a hitch. I'm still curious what will happen if I let my battery drain completely. Perhaps I'll try it some time this week. I'll be sure to post back here if/when I do that. All in all, it was a harrowing, but educational experience.
Anyway, just wanted to give a big THANK YOU to Xboxfanj! You really are the man :good:. Thanks for your patience and determination.

[Q] Screen flickering / Bootloop -> Is my Nexus dead? Data recovery possible?

Hello,
just some hours ago my Galaxy Nexus (SC-04D) rebooted while lying on the table next to me. After several sings of vibration I noticed that the phone doesn't boot completely.
When switching on the phone I get the turn-on-vibration, then the google letters are displayed. Most times the word "google" flickers from left to right over the screen (only the line where the word is supposed to be). Sometimes it boots further and I get the colored "X" displayed. This symbol starts flickering, too and if it went so far it reboots.
Here are two pictures I took from the phone failing to boot:
picpaste.com/img_0001_01-Rmm7kDYb.jpg
picpaste.com/img_0001-eoLqVoiM.jpg
The phone is running stock Android from Docomo. The phone is about 14 months old and has never been unlocked, rooted, modded, taken a bath, ... 'til now.
I tried starting with and without SIM-card, with and without charger attached and let it lie around for several minutes without battery between my tries.
Is there any chance to get my data from the phone or even get it fixed? Please give me a hint what I can do.

Well the Red exclamation mark means that there is a problem with the phone reading the build path. Since you have never rooted the phone, this would mean that the files got corrupt on the phone. With a non-rooted phone a Factory Reset is about the only solution, but is probably only a temporary fix. This is most likely caused by too many apps on the phone and it just freaked out on something eventually.
I think these options might work for you, however I cannot confirm since I have rooted my phone from day one and never looked back:
Power button + up volume= recovery

Thanks GPFboy for your fast response,
GPFboyJS said:
Well the Red exclamation mark means that there is a problem with the phone reading the build path. Since you have never rooted the phone, this would mean that the files got corrupt on the phone. With a non-rooted phone a Factory Reset is about the only solution, but is probably only a temporary fix.
Click to expand...
Click to collapse
As far as I understand a factory reset results in a complete loss of data on the phone, right? So without root/unlock there's no chance to get my data from the phone? That would be really bad.
GPFboyJS said:
This is most likely caused by too many apps on the phone and it just freaked out on something eventually.
Click to expand...
Click to collapse
What is "too many"? I think there are about 35 apps installed atm. By the moment the problem arose wifi and 3g-data,BT,GPS were disabled and just a minute before I took a look how late it was. So nothing special.
GPFboyJS said:
I think these options might work for you, however I cannot confirm since I have rooted my phone from day one and never looked back:
Power button + up volume= recovery
Click to expand...
Click to collapse
The phone reaches fastboot mode, but when selecting recovery mode I get the google logo and after that the open android with the red exclamation mark. That doesn't look good, does it?

BrainSD said:
The phone reaches fastboot mode, but when selecting recovery mode I get the google logo and after that the open android with the red exclamation mark. That doesn't look good, does it?
Click to expand...
Click to collapse
thats stock recovery.
is your bootloader already unlocked or no?

Zepius said:
is your bootloader already unlocked or no?
Click to expand...
Click to collapse
It's still locked.

you might try and go into recovery,
then press (i think) power and vol up and try and see if you can wipe just cache.

Zepius said:
you might try and go into recovery,
then press (i think) power and vol up and try and see if you can wipe just cache.
Click to expand...
Click to collapse
ok, I tried that several time now, but it didn't work. The only thing when I select recovery and press the power button is that I get the google logo and then the dead android + red exclamation sign, but this screen is scrambled and shows flickering pixels as shown in one of my pictures in the first post. So recovery mode seems not to work for me?
Is there a software or hardware problem with my device?

BrainSD said:
ok, I tried that several time now, but it didn't work. The only thing when I select recovery and press the power button is that I get the google logo and then the dead android + red exclamation sign, but this screen is scrambled and shows flickering pixels as shown in one of my pictures in the first post. So recovery mode seems not to work for me?
Is there a software or hardware problem with my device?
Click to expand...
Click to collapse
You can try to unlock your boorloader and flash a custom recovery like cwm or twrp. Maybe that helps. You can always go back and re lock it.
Sent from my Galaxy Nexus using XDA Premium HD app

mrgnex said:
You can try to unlock your boorloader and flash a custom recovery like cwm or twrp. Maybe that helps. You can always go back and re lock it.
Sent from my Galaxy Nexus using XDA Premium HD app
Click to expand...
Click to collapse
He wants to keep his data... which, at this point, seems rather impossible.
If fastboot doesn't solve it, i would try omapflash, OP. That "flickering" doesn't look good.

beekay201 said:
He wants to keep his data... which, at this point, seems rather impossible.
If fastboot doesn't solve it, i would try omapflash, OP. That "flickering" doesn't look good.
Click to expand...
Click to collapse
Well if I was him I would be more worried about my expensive phone instead of data. Maybe a lesson for later to have a backup
Sent from my Galaxy Nexus using XDA Premium HD app

beekay201 said:
He wants to keep his data... which, at this point, seems rather impossible.
If fastboot doesn't solve it, i would try omapflash, OP. That "flickering" doesn't look good.
Click to expand...
Click to collapse
Yes exactly this is the point. Since I don't have a current data backup the first thing to try is getting my data from the phone. I already tried temporary loading the clockwork recovery through fastboot - with the galaxy nexus toolkit and by hand(sdk) - but it failed ("Bootloader locked").
What I'm wondering about is the fact that the phone seems to behave normally in odin and fastbood mode but going nuts the moment it's expected to boot. Besides the flickering google logo and the "matrix-modded" dead android it even ended up in a totally green screen one time.
At the moment I don't dare trying to unlock/flash the phone because of being afraid getting stuck and ending up with the phone being in some kind of undefined / totally broken state. Initially I was in hope of being able to rescue my data but now i will try my luck with docomo support first.
As far as I understood omapflash is primary used for recovering bricked phones not even starting to odin/fastboot mode. But thanks to your hint I found http://forum.xda-developers.com/showthread.php?t=2016628 "Unlock bootloader on GT-I9250 without wipe and without root" This might bring some chance for data access.
I will try to get through 1 to 4 of the guide first and see how far I get.
If this won't work I might try to unlock, recover and try to "undelete" what's possible. (http://forum.xda-developers.com/showthread.php?t=1994705)
Does this order make sense?
Btw, having a dead phone is bad, of course, even when I got it new for 2300Yen but loosing some pictures i really liked and having no phone atm currently hurts more. Especially when knowing that I was thinking of copying all photos to my computer only one day before when I pulled only some minor important ones from the phone I needed for work and planned to do a full backup and unlock this weekend when I get back my 'Milestone' currently lent to someone else.
Once again something I learned. Backup! Even you phone.

BrainSD said:
As far as I understood omapflash is primary used for recovering bricked phones not even starting to odin/fastboot mode. But thanks to your hint I found http://forum.xda-developers.com/showthread.php?t=2016628 "Unlock bootloader on GT-I9250 without wipe and without root" This might bring some chance for data access.
Click to expand...
Click to collapse
!!!
It will work actually, I read/also replied to that thread! I had forgotten about it, sorry. I must say that if you had already read the stickies that matter, you'd already know about it.
It will unlock your bootloader, bypassing fastboot. Still, it's not for the faint hearted. I refered to omapflash because its a low level tool, it doesn't require the bootloader to be unlocked, and is able to restore the bootloader to working state, and I got there because you mentioned you see graphical glitches/flickering which may indicate bootloader partition failure and/or consequent corruption.
I think that's your best shot at trying to get your data back. After unlock, boot to fastboot and 'fastboot boot custom_recovery.img', and grab your stuff (if you can) from /data/.

beekay201 said:
!!!
It will work actually, I read/also replied to that thread! I had forgotten about it, sorry. I must say that if you had already read the stickies that matter, you'd already know about it.....
Click to expand...
Click to collapse
Your hint was very helpful for me getting the right direction since I'm just starting to dig into all this stuff.
Unlocking went quite well. Writing back to the phone worked without a problem and after that it's shown as unlocked in fastboot mode.
It even started loading clockwork recovery with fastboot. But the initial cw recovery screen (their logo and the cw recovery footer) was already shown on a scattered screen (google logo + unlocked lock was fine). After that the usb port connected and disconnected several times, then the screen went blank.
May this be because of corrupted fs or defective hw?
From my understanding with omapflash one have raw access to the phones internal memory similar to with dd on Unix/Linux. So currently I'm trying to dump ("upload") the emmc from the phone - actually in smaller chunks since omapflash needs to allocate all the memory in advance for the upload and to prevent interruptions. This will take a while...
After that I want to try to 'cat' the parts together and mount the filesystem - might be possible to do this from linux since it seems to be ext4 filesystems

BrainSD said:
Your hint was very helpful for me getting the right direction since I'm just starting to dig into all this stuff.
Unlocking went quite well. Writing back to the phone worked without a problem and after that it's shown as unlocked in fastboot mode.
It even started loading clockwork recovery with fastboot. But the initial cw recovery screen (their logo and the cw recovery footer) was already shown on a scattered screen (google logo + unlocked lock was fine). After that the usb port connected and disconnected several times, then the screen went blank.
May this be because of corrupted fs or defective hw?
From my understanding with omapflash one have raw access to the phones internal memory similar to with dd on Unix/Linux. So currently I'm trying to dump ("upload") the emmc from the phone - actually in smaller chunks since omapflash needs to allocate all the memory in advance for the upload and to prevent interruptions. This will take a while...
After that I want to try to 'cat' the parts together and mount the filesystem - might be possible to do this from linux since it seems to be ext4 filesystems
Click to expand...
Click to collapse
Great, so far so good.
Yeah, they're ext4 images, but sparse images i believe - link

Blank screen after unlocking (E975) / abnormal boot-behavior

Hi everbody!
After unlocking my LGOG (E975) a weird issued appeard: When phone is in standby and I try to boot it up as always (before unlocking) by Long pressing standby-button for a few moments, the LG logo comes up, and then only a black blank Screen (after 10 minutes or so this repeats) If I immedeately after disappearing LG-logo I press the standby-button again, the well known animated logo appears and everything is OK.
On the other Hand: when I connect a completely battery-empty LGOG ONLY the black Screen appears, after some reboots with hold standby-button the White battery loading Symbol appears...
Has it something to do with Fast-Boot (how to change any options?) or with unlocking via FreeGee. So far I was unable to find any similar issues like this... It bothers me always to press standby-button twice to boot up. If I missed the correct Timing I have to hold standby to turn off the phone correctly. Please help me!! Thank you guys!!

Wrong thread dude.

Oops, thanks man. Could an admin please move my thread to the Q&A section? Thanks!

OI
mba780 said:
Hi everbody!
After unlocking my LGOG (E975) a weird issued appeard: When phone is in standby and I try to boot it up as always (before unlocking) by Long pressing standby-button for a few moments, the LG logo comes up, and then only a black blank Screen (after 10 minutes or so this repeats) If I immedeately after disappearing LG-logo I press the standby-button again, the well known animated logo appears and everything is OK.
On the other Hand: when I connect a completely battery-empty LGOG ONLY the black Screen appears, after some reboots with hold standby-button the White battery loading Symbol appears...
Has it something to do with Fast-Boot (how to change any options?) or with unlocking via FreeGee. So far I was unable to find any similar issues like this... It bothers me always to press standby-button twice to boot up. If I missed the correct Timing I have to hold standby to turn off the phone correctly. Please help me!! Thank you guys!!
Click to expand...
Click to collapse
Same here. I wanted to write about this myself. Did you Install TWRP or CWM? Someone who useses exactly the same SW baseband kernel and LG ROM like me as a base does not have the issue and we were trying to figure it out. He unlocked installed CWM and CM10.1.
Sent from my LG-E975 using Tapatalk 2

mba780 said:
Oops, thanks man. Could an admin please move my thread to the Q&A section? Thanks!
Click to expand...
Click to collapse
ASK MODERATOR for the help...!!
Sent from my LG-E975 using xda premium

OK, so getting back to business i can see this is a problem when charging the phone. If i shutdown, then charge then in the morning unplug > phone shuts down again (from charging mode) and i power it up it doesn't boot the ROM.
I tested this situation and i saw that sometimes it doesn't even enter charging mode after a shutdown. I will test later and comeback. Maybe others can relate and give ideas.

Same here
Hello,
I have the exact same problem with my Lg e975.
If the battery is empty , i can not turn my phone on while charging. I think it is not even charging sometimes. I thought it was because of charger but i think it may because of phone.
Today i am charging 10 minutes still phone going black screen after LG logo. :crying: even not sure if it is charging.

Huntytigger said:
Hello,
I have the exact same problem with my Lg e975.
If the battery is empty , i can not turn my phone on while charging. I think it is not even charging sometimes. I thought it was because of charger but i think it may because of phone.
Today i am charging 10 minutes still phone going black screen after LG logo. :crying: even not sure if it is charging.
Click to expand...
Click to collapse
Any solution for this? I have the same happen to my e975. I figure using freegee somehow corrupted the bootloader, so plan on either flashing a new bootloader or just an official update from LG and start from scratch again? Has anyone tried this?
or this: http://forum.xda-developers.com/showthread.php?t=2010624
or this: http://forum.xda-developers.com/showpost.php?p=45622733&postcount=70
Problem is its my wife's phone so wont try it until i get my nexus 5 and she can use my nexus 4 if i brick it.
***edit*** according the Houstonn, the bootloader located here: http://downloads.codefi.re/houstonn/lgog/misc/cwm-geeb-4-3-z20i-bootloader_only.zip it should be able to be used on any LGOG. IF you are game give it a go but i won't be responsible for any bricks. I will test it when i get my nexus 5. Its a 4.3 bootloader that can be flashed using CWM.

MontAlbert said:
Any solution for this? I have the same happen to my e975. I figure using freegee somehow corrupted the bootloader, so plan on either flashing a new bootloader or just an official update from LG and start from scratch again? Has anyone tried this?
or this: http://forum.xda-developers.com/showthread.php?t=2010624
or this: http://forum.xda-developers.com/showpost.php?p=45622733&postcount=70
Problem is its my wife's phone so wont try it until i get my nexus 5 and she can use my nexus 4 if i brick it.
***edit*** according the Houstonn, the bootloader located here: http://downloads.codefi.re/houstonn/lgog/misc/cwm-geeb-4-3-z20i-bootloader_only.zip it should be able to be used on any LGOG. IF you are game give it a go but i won't be responsible for any bricks. I will test it when i get my nexus 5. Its a 4.3 bootloader that can be flashed using CWM.
Click to expand...
Click to collapse
i just gave it a shot and it's working ok, no more power up issues, i will try the charging thing when my battery runs out. thanks!

worked for me. charged fine as well. phew. Would've had to sleep on the couch if i bricked her phone

Hello, ¿how i can return to the stock bootloader to flash a stock rom?
thanks.
MontAlbert said:
Any solution for this? I have the same happen to my e975. I figure using freegee somehow corrupted the bootloader, so plan on either flashing a new bootloader or just an official update from LG and start from scratch again? Has anyone tried this?
or this: http://forum.xda-developers.com/showthread.php?t=2010624
or this: http://forum.xda-developers.com/showpost.php?p=45622733&postcount=70
Problem is its my wife's phone so wont try it until i get my nexus 5 and she can use my nexus 4 if i brick it.
***edit*** according the Houstonn, the bootloader located here: http://downloads.codefi.re/houstonn/lgog/misc/cwm-geeb-4-3-z20i-bootloader_only.zip it should be able to be used on any LGOG. IF you are game give it a go but i won't be responsible for any bricks. I will test it when i get my nexus 5. Its a 4.3 bootloader that can be flashed using CWM.
Click to expand...
Click to collapse

llanerosolitario said:
Hello, ¿how i can return to the stock bootloader to flash a stock rom?
thanks.
Click to expand...
Click to collapse
No idea mate. I assume you would have to find a full stock rom and just flash that via normal update methods. I don't plan on ever going back to the crap that LG call stock.

Huntytigger said:
Hello,
I have the exact same problem with my Lg e975.
If the battery is empty , i can not turn my phone on while charging. I think it is not even charging sometimes. I thought it was because of charger but i think it may because of phone.
Today i am charging 10 minutes still phone going black screen after LG logo. :crying: even not sure if it is charging.
Click to expand...
Click to collapse
Guys this is normal when u empty ur batt and charge... Just leave it for a while to charge.. Happens to me also..
Sent from my LG Optimus G using Tapatalk

davevinci said:
Guys this is normal when u empty ur batt and charge... Just leave it for a while to charge.. Happens to me also..
Sent from my LG Optimus G using Tapatalk
Click to expand...
Click to collapse
Happened again just now.
The problem is when it is at this strange black screen it is not charging!
Just i put my phone to charge left there 1 hours. Just wanted to turn on but didn't. Pluged of the charger and phone is not booting because battery seems to empty. Just i put it back to charge and restarted it 10 times nearly. Now the phone turned on and started to recharging from 0!
I feel like phone going and coming back to life. Some day will not turn on.

Ya.. . Lg phones has this weird behaviour.... Even with charger plugged and empty battery you can't switch on your mobile... I think it always take power from battery even with charger connected....
Sent from my LG-E975 powering Stock 4.1.2

hey
MontAlbert said:
Any solution for this? I have the same happen to my e975. I figure using freegee somehow corrupted the bootloader, so plan on either flashing a new bootloader or just an official update from LG and start from scratch again? Has anyone tried this?
or this: http://forum.xda-developers.com/showthread.php?t=2010624
or this: http://forum.xda-developers.com/showpost.php?p=45622733&postcount=70
Problem is its my wife's phone so wont try it until i get my nexus 5 and she can use my nexus 4 if i brick it.
***edit*** according the Houstonn, the bootloader located here: http://downloads.codefi.re/houstonn/lgog/misc/cwm-geeb-4-3-z20i-bootloader_only.zip it should be able to be used on any LGOG. IF you are game give it a go but i won't be responsible for any bricks. I will test it when i get my nexus 5. Its a 4.3 bootloader that can be flashed using CWM.
Click to expand...
Click to collapse
I just want thank YOUUU SO Much... i was really afraid... but this worked!!!! ****... thanks mate really!!!
Did u guys know why this happening? this problem? was random... :s because of freegee maybe?

Update boot loader, use nexus one
Sent from my LG-E975 using Tapatalk

LGG3 D850 stuck on firmware update screen

So my mom had an LG G3 D850 from at&t. was totally fine, then she updated whatever she had to 6.0 and it started bootlooping. Tried the LG Flash tool with a tot stock firmware. Went through the whole process got the blue screen with the red 3, it restarted, kept bootlooping. Tried it again but then it got stuck on 5% for like 4 hours, unplugged it and now no matter what i do i cant get into download mode. It shows the LG screen then goes straight to firmware update (even if i dont hold vol up) and it says 910K Bxx QEM (the xx changes) I was able to get into recovery mode, recovered it. same thing. Im losing my mind a little bit here so any advice, or pointing me to a tutorial would be greatly appreciated. Ive looked all over the internet and cant find anything helpful apparently the qualcomm thing where you short the motherboard doesnt work for this phone either?
*flips desk*

If it is under warranty .send your phone to at&t to get it fixed.

Its not
Jahanzaibawan said:
If it is under warranty .send your phone to at&t to get it fixed.
Click to expand...
Click to collapse
warranty expired 6 months ago

evangelion117 said:
warranty expired 6 months ago
Click to expand...
Click to collapse
i have same

Qualcmomm method you are describing is just to bring your phone into download mode. I have done this to my brother's g3. You have to flash using LG flashtool using different settings and then hard reset your phone. If it doesn't solve your problem.try to replace battery and then use custom rom.

tried that
Jahanzaibawan said:
Qualcmomm method you are describing is just to bring your phone into download mode. I have done this to my brother's g3. You have to flash using LG flashtool using different settings and then hard reset your phone. If it doesn't solve your problem.try to replace battery and then use custom rom.
Click to expand...
Click to collapse
no matter what settings i set LG flash tool to it doesnt recognize the phone. and no matter what i do the phone jumps to the firmware update screen, it skips the download mode screen. I have two batteries and ive repeatedly switched them back and forth :/ even after reseting the phone with factory reset it goes back go the firmware update screen

evangelion117 said:
no matter what settings i set LG flash tool to it doesnt recognize the phone. and no matter what i do the phone jumps to the firmware update screen, it skips the download mode screen. I have two batteries and ive repeatedly switched them back and forth :/ even after reseting the phone with factory reset it goes back go the firmware update screen
Click to expand...
Click to collapse
Firmware update screen is the download mode.
Just follow the guide of hyelton to flash your phone.follow steps properly.

still bootloops :/
Jahanzaibawan said:
Firmware update screen is the download mode.
Just follow the guide of hyelton to flash your phone.follow steps properly.
Click to expand...
Click to collapse
totally forgot to switch to com41, did everything exactly like that. got to the red 3, restarted it, and it still bootloops. i guess ill try a custom rom cause this stock one isnt working.

apparently cant do custom roms either, I got it to boot the the set up screen for 5seconds befores it crashed so i guess im throwing it away cause im sick of looking at it.

evangelion117 said:
apparently cant do custom roms either, I got it to boot the the set up screen for 5seconds befores it crashed so i guess im throwing it away cause im sick of looking at it.
Click to expand...
Click to collapse
Try LG PC Suite go to option update error recovery it will download the stock rom flash it dont worry it will take some time so be patient also what happened is when ur g3 wasnt fully updated meaning it got stuck or turned off when updating
.hit like if its helps