[Q] Boot loop, can't flash, usb connection error - LG Optimus L9 P760, P765, P768, P769

please delete

How many times did you try a hard reset? Try again.
Sent from my LG-P769 using xda app-developers app

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schen145 said:
I've been trying this all day and it's still getting stuck. At this point I think I might just have to send it back to LG for repair.
Click to expand...
Click to collapse
I was in your same boat last week. Try this: http://forum.xda-developers.com/showpost.php?p=43242543&postcount=8
It seemed to fix all my issues and let me do the offline flash.

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schen145 said:
Still no luck . All I get is a mirrored fastboot screen
Click to expand...
Click to collapse
I assume you are following the CMahedra offline flashing method?
I also had the same thing, as well as the mirrored s/w upgrade screen. But it did allow me to get through the flashing process.
Sorry I cannot help further. I almost sent mine to LG, they even gave me an return authorization number and that night I had it all worked out.

schen145 said:
Still no luck . All I get is a mirrored fastboot screen
Click to expand...
Click to collapse
Try this
http://forum.xda-developers.com/showpost.php?p=42383263&postcount=2
Sent from my LG-P769 using xda app-developers app

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i have the same problem about connection PC and L9,so i ask for someone who can made a flash tool,easiest way,like ToolKit for Rooting.

online upgrade
try recovery phone in thhe B2C app if it says you are already on the latest firmware

Related

[Q]getting Fail to boot 4 brick

hi guys....i'm getting fail to boot 4 message when turning on my phone. it happened after flashing 1FF-sunfire-user-2.3.4-4.5.1A-1_SUN-154_5-CM-release-keys-signed-Sprint-US.sbf coz i had a boot loop after flashing a custom ROM and forgot to wipe data. i got a unlocked phone using deprunlock.sbf. i also tried reflashing 1FF-sunfire-user-2.3.4-4.5.1A-1_SUN-154_5-CM-release-keys-signed-Sprint-US.sbf but when i get to "Switching device to BP Pass through..." its goes to "Error Switching device to BP Pass through.." and fails flashing....need help pls!
Are you able to get in fasboot mode or android recovery? Or is it the standard failed to boot 4 rsd starting error?
Sent from my MB855 using xda app-developers app
mof9336 said:
Are you able to get in fasboot mode or android recovery? Or is it the standard failed to boot 4 rsd starting error?
Sent from my MB855 using xda app-developers app
Click to expand...
Click to collapse
its the standard failed to boot 4 starting rsd mode. can this still be fixed?
Make sure your battery has a good charge( do the usb trick if you have to) and try flashing another sbf. Did you try the derpunlock.sbf
Sent from my MB855 using xda app-developers app
mof9336 said:
Make sure your battery has a good charge( do the usb trick if you have to) and try flashing another sbf. Did you try the derpunlock.sbf
Sent from my MB855 using xda app-developers app
Click to expand...
Click to collapse
sorry but i'm kinda new to Motorola Phones, what is the usb trick?last night i tried flashing the 1FF-sunfire-user-2.3.4-4.5.1A-1_SUN-198_7-CM-release-keys-signed-Sprint-US.sbf but had the re-enumerate error coz i ran out of battery. Will try still get a charger today but i'm really intrigued about the usb trick thingy....could you help me out?
Google charge any phone with out a charger. Lot a videos on it
Sent from my MB855 using xda app-developers app
mof9336 said:
Google charge any phone with out a charger. Lot a videos on it
Sent from my MB855 using xda app-developers app
Click to expand...
Click to collapse
ahahahahaha....it looks kinda wierd....but anyways when i get a good charge....what's the next thing i should do?should i flash the 198_7?i tried deprunk last night but didn't work....failed to flash....
G69D said:
ahahahahaha....it looks kinda wierd....but anyways when i get a good charge....what's the next thing i should do?should i flash the 198_7?i tried deprunk last night but didn't work....failed to flash....
Click to expand...
Click to collapse
thanks for your help man....fixed my phone now....thanks a lot!
G69D said:
thanks for your help man....fixed my phone now....thanks a lot!
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Click to collapse
my phone is also showing Failed to boot 2
please share how you managed to restore it.
thanks
portman said:
my phone is also showing Failed to boot 2
please share how you managed to restore it.
thanks
Click to expand...
Click to collapse
I too am getting the failed to boot 2 after the motorola update came out. please explain how to fix this issue please
mrperez83 said:
I too am getting the failed to boot 2 after the motorola update came out. please explain how to fix this issue please
Click to expand...
Click to collapse
go to fastboot mode and find android recovery. wipe date and cache. then reboot your phone. download the 198_7 and flash using RSDLite....that should put you on stock ROM.hope it helps you guys....
Do not flash any sbf, after ota update installation.
how you fixed your phone
G69D said:
thanks for your help man....fixed my phone now....thanks a lot!
Click to expand...
Click to collapse
hi sir,
i have the same error as you had please help me how to fix this and which sbf file i need to download and flash it.......
on starting screen it says "failed to boot error 4"
thank you
G69D said:
its the standard failed to boot 4 starting rsd mode. can this still be fixed?
Click to expand...
Click to collapse
please explain me for fixed failed to boot 4 or please upload file img for fix this trouble
thank's

help! in dire need of assistance!!

ok,
So like an idiot, i began the S-OFF process without reverting my SuperCID. I cannot get past step 8, and i am having errors flashing my RUU.
Right now i cannot get past the bootloader. If i try to fastboot reboot, it takes me back to the bootloader. If i try a reboot, it takes me back to the bootloader.
Is there something that i can flash to get me back and running? I have tried numerous things, and i really need my phone back tonight. Grandfather is in the hospital, and i have no way to contact anyone except through facebook / email.
does anyone have some ideas, or know what i need to do? I honestly dont care about root or s-off, i can do that later. Right now i just need a bootable phone.
help!
squeezyb said:
ok,
So like an idiot, i began the S-OFF process without reverting my SuperCID. I cannot get past step 8, and i am having errors flashing my RUU.
Right now i cannot get past the bootloader. If i try to fastboot reboot, it takes me back to the bootloader. If i try a reboot, it takes me back to the bootloader.
Is there something that i can flash to get me back and running? I have tried numerous things, and i really need my phone back tonight. Grandfather is in the hospital, and i have no way to contact anyone except through facebook / email.
does anyone have some ideas, or know what i need to do? I honestly dont care about root or s-off, i can do that later. Right now i just need a bootable phone.
help!
Click to expand...
Click to collapse
Did you relock the boot loader?
Sent from my DROID RAZR using Tapatalk 2
yes i did
squeezyb said:
yes i did
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Click to collapse
More info would help like what errors you are getting
Sent from my DROID RAZR using Tapatalk 2
adb wont even find my device, so i am not getting any errors. is there a working RUU i can rename to PJ53IMG, and flash that through the bootloader?
http://forum.xda-developers.com/showthread.php?p=28723878
Sent from my DROID RAZR using Tapatalk 2
right, i tried this and had no success. the bootloader went through the process, and began to load the file, but did not finish the process. Could i possibly have tried flashing the wrong one?
i know this is something simple that i can flash, but it is not working
squeezyb said:
right, i tried this and had no success. the bootloader went through the process, and began to load the file, but did not finish the process. Could i possibly have tried flashing the wrong one?
Click to expand...
Click to collapse
Either should work but try the other
Sent from my DROID RAZR using Tapatalk 2
i tried using the one from unlimited.io, renaming it to PJ53IMG, but it would not flash... in theory that would do the trick right?
i am trying to download the file again, we'll see if that works. possibly corrupted on my end
squeezyb said:
i tried using the one from unlimited.io, renaming it to PJ53IMG, but it would not flash... in theory that would do the trick right?
i am trying to download the file again, we'll see if that works. possibly corrupt
Click to expand...
Click to collapse
Probably not. Use the one provided in Andy's thread. ADB is probably not working because debugging has been turned off.
Have you tried the recovery? Check to see if that works. If not try to fastboot a recovery. The command is "Fastboot flash recovery". Try with TWRP. If that takes then try to flash a ROM with that.
blazingwolf said:
Probably not. Use the one provided in Andy's thread. ADB is probably not working because debugging has been turned off.
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Click to collapse
the link in andy's thread is busted, or i would. unless i am wrong.. have you tried it?
On my side ill say do what the ther said, if you still have supercid you can unlock device and flash recovery and flash a working rom if you want it booteable
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
squeezyb said:
the link in andy's thread is busted, or i would. unless i am wrong.. have you tried it?
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Click to collapse
Yep. Working just fine for me.
Anyways, try the recovery route. I think it is your best bet.
blazingwolf said:
Yep. Working just fine for me.
Anyways, try the recovery route. I think it is your best bet.
Click to expand...
Click to collapse
OK FALSE ALARM!
I am back in business.
the first time tried flashing the RUU it did not work. i redownloaded, tried again, and it works fine.
Thank you everyone for dealing with my noob behavior.
<3 you all
squeezyb said:
OK FALSE ALARM!
I am back in business.
the first time tried flashing the RUU it did not work. i redownloaded, tried again, and it works fine.
Thank you everyone for dealing with my noob behavior.
<3 you all
Click to expand...
Click to collapse
Great to hear.
squeezyb said:
OK FALSE ALARM!
I am back in business.
the first time tried flashing the RUU it did not work. i redownloaded, tried again, and it works fine.
Thank you everyone for dealing with my noob behavior.
<3 you all
Click to expand...
Click to collapse
Everyone panics a little bit when the screen goes black
Sent from my DROID RAZR using Tapatalk 2
jamminjon82 said:
Everyone panics a little bit when the screen goes black
Sent from my DROID RAZR using Tapatalk 2
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Click to collapse
No truer words are spoken
jamminjon82 said:
Everyone panics a little bit when the screen goes black
Sent from my DROID RAZR using Tapatalk 2
Click to expand...
Click to collapse
Yep. And somehow time stands still for an eternity until something happens to let you know its alive.
I'll ask here first I achieved s off bit it destroyed my sd well to cut it short I flashed the ruu.zip I'm now s off with a locked bootloader no superuser or root and no recovery how do I install a recovery?
Sent from my ADR6410LVW using xda app-developers app
prairiedogn said:
I'll ask here first I achieved s off bit it destroyed my sd well to cut it short I flashed the ruu.zip I'm now s off with a locked bootloader no superuser or root and no recovery how do I install a recovery?
Sent from my ADR6410LVW using xda app-developers app
Click to expand...
Click to collapse
look here: http://forum.xda-developers.com/showthread.php?t=1435228

rooting help!

ok so im trying to root im following the guide in the general section. when i plug my phone in to the computer I pick MTP right? i picked MTP ran followed the prompts i hit restore data on my phone then nothing else happens? someone help please am i doing something wrong here?
also when i hit restore data it says restore started then like a second later says restore ended
armyms25 said:
also when i hit restore data it says restore started then like a second later says restore ended
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Click to collapse
Just out of curiosity, do you have debugging checked in developer options?
Sent from my SGH-I777 using xda app-developers app
I believe this belongs in Q&A mate.
Sent from my LG-E970 using xda app-developers app
armyms25 said:
ok so im trying to root im following the guide in the general section. when i plug my phone in to the computer I pick MTP right? i picked MTP ran followed the prompts i hit restore data on my phone then nothing else happens? someone help please am i doing something wrong here?
Click to expand...
Click to collapse
Did you unlock the bootloader?
No I didn't unlock the bootloader yet. From the guide I thought it said I had to root before I unlock the bootloader? Unless I read that wrong.
Sent from my LG-E970 using xda app-developers app
Jank4AU said:
Just out of curiosity, do you have debugging checked in developer options?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
yeah I have it checked. now its ran all the way a couple times but at the very end it says mount permisson denied. it finishes says I should have superuser then it doesnt work
I had a similar issue as well. I uninstalled the drivers and then reinstalled them and it solved the problem. Try doing that and see if it was the problem.
what kind of software are you using? e97011cc?
I uninstalled the drivers and it still didn't work. And yes I'm on e97011c
Sent from my LG-E970 using xda app-developers app
armyms25 said:
I uninstalled the drivers and it still didn't work. And yes I'm on e97011c
Sent from my LG-E970 using xda app-developers app
Click to expand...
Click to collapse
You will need to downgrade with lgnpst to root. It is in topic at top of page on irc.
http://webchat.freenode.net/?channels=lg-optimus-g
Yeah you will my bad also I don't know what i was thinking lol but I ran into that same problem and I restored back to like the day I got it and then rooted it and it worked just fine lol Some time's its just like that
Hop into the IRC to get the link to LGNPST so that you can downgrade. I think theres links in the other threads like the conversion, to get the link to the stock firmware. LGNPST is not hard to use, just make sure you have all the correct drivers installed and its quick and painless
I tried to rooting. But phone did not reboot, but it loses cell net.
I reboot it manually and phone now turns on screen for a half second and turns off. And I can not use it (unlock screen is not working).
I can run it in download mode. So what can I do? Download stock ROM and flash it? BTW, what app I need to flash stock ROM?
RubberBigPepper said:
I tried to rooting. But phone did not reboot, but it loses cell net.
I reboot it manually and phone now turns on screen for a half second and turns off. And I can not use it (unlock screen is not working).
I can run it in download mode. So what can I do? Download stock ROM and flash it? BTW, what app I need to flash stock ROM?
Click to expand...
Click to collapse
My friend did thus to his G as well. Screen was flickering on and off and the lock screen wouldn't open. He factory reset and was returned to out of the box like new.
Power+vol down
insanecrane said:
My friend did thus to his G as well. Screen was flickering on and off and the lock screen wouldn't open. He factory reset and was returned to out of the box like new.
Power+vol down
Click to expand...
Click to collapse
Power+vol down does not reset (I tried all combination: VolUp+Power, VolDown+Power, VolDown+VolUp+Power, only last one works).
Updated: Thanks! Power+vol down almost a minute holdin resets data. Now phone is working normal.
Question: I also tried to root on E97011c and it got stuck after the restore part and nothing happened. Does this mean nothing was put on my phone? Is it possible it could become messed up now?
I don't remember accepting any ota but I'm rooted and unlocked and I am on software e90711c , I don't know if a ROM changed it or what, but I followed the guide and used the free gee app on play store to unlock boot loader. Not sure if this helps in anyway, but like I said I managed to do it and don't recall accepting any ota.
Sent from my LG-E970 using xda app-developers app

HELP! sgh-i777 not turning on

So, I have the SHG-I777 and I had stock 4.0.3 but the cellphone started to reboot over and over again so I made a factory reset wipe cache and those things and the cellphone was working fine until today.
It started to reboot, I think it was on a loop (Sorry for the bad english) And I Couldnt do anything with it, I made factory reset again and it turned on but in safe mode and every process in the cellphone just stopped I wasnt even able to select a launcher..
It rebooted lots of time again and now it just stays in the "Siyah Kernel" screen.. Now I cant do anything andddd the laptop does not recognize it so I cant use Odin .. I trough that I could flash the stock 4.0.3 again via recovery mode but I dont know how to do it.. or if I should flash another Rom or a custom rom.. the only thing that I can do with the cellphone is to get into recovery mode.
help?
Have you gotten into download mode? More importantly, Have you read the stickies on the forums yet?
Sent from my SGH-I777 using xda app-developers app
chapelfreak said:
Have you gotten into download mode? More importantly, Have you read the stickies on the forums yet?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
I can get into download mode too, but still my laptop does not recognize the device so.. and nop, didn't have the time.
Josediaz9 said:
I can get into download mode too, but still my laptop does not recognize the device so.. and nop, didn't have the time.
Click to expand...
Click to collapse
Didn't have time to read important information about modding your phone and then messing with it anyway? I love it. Well make time to read because the answer to your questions are in there
Sent from my CLEAN Note ll
Josediaz9 said:
I can get into download mode too, but still my laptop does not recognize the device so.. and nope, didn't have the time.
Click to expand...
Click to collapse
I just replied to someone else in another thread. Ill point you there. Your ignorance astounds me. You didn't have the TIME? But you expect all of us that did have the time to read the rules, the stickies, and all the inportant information to help you since obviously our time is less VALUABLE than yours? http://forum.xda-developers.com/showthread.php?p=39916674#post39916674
Am I doing it right?
I've read the stickies (Im sorry for not doing that before), I'm still looking for a solution, I'm dowloading kies in another computer to see if the pc actually recognizes my phone, so I can be sure that the problem is my laptop and not the phone... if it does I'll just flash with odin a stock rom.. I'll update here the results.
Have you tried other USB cords?
Sent from my SGH-I777 using xda app-developers app
chapelfreak said:
Have you tried other USB cords?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
Yes I have, 3 different cords, the problem is the phone, I tried in another pc and it didn't recognize the phone either.

Screen split and doubled

So I have never had this problem before I have a 76920d I have unlocked boot loader and I flashed cm10.1 I went through all the steps on fixing the wonky touch screen and stuff everything was running good for about a week then the other day I booted into recovery and I set the phone down for a minute to do something and my phone was split into two screens of the same image I've tried flashing kdz no fix and I tried restoring a previous back up didn't work now I have no idea what to do. This is a back up phone so I still have a phone to use but it's a 200 dollar phone and would like fixed thank you
Sent from my LG-P769 using xda premium
mderuelle said:
So I have never had this problem before I have a 76920d I have unlocked boot loader and I flashed cm10.1 I went through all the steps on fixing the wonky touch screen and stuff everything was running good for about a week then the other day I booted into recovery and I set the phone down for a minute to do something and my phone was split into two screens of the same image I've tried flashing kdz no fix and I tried restoring a previous back up didn't work now I have no idea what to do. This is a back up phone so I still have a phone to use but it's a 200 dollar phone and would like fixed thank you
Sent from my LG-P769 using xda premium
Click to expand...
Click to collapse
Which rom are you running now?
Did you try flashing stock xloader and uboot ?
No I tried going to the page that tells you how but it said it was down please come back later. Could you post the link to the thread it's in I would appreciate it
Edit: I'm on stock Rom on a 76920d now I restored a backup trying to fix the problem but it didn't work kdz flashing didn't work either
Sent from my LG-P769 using xda premium
mderuelle said:
No I tried going to the page that tells you how but it said it was down please come back later. Could you post the link to the thread it's in I would appreciate it
Edit: I'm on stock Rom on a 76920d now I restored a backup trying to fix the problem but it didn't work kdz flashing didn't work either
Sent from my LG-P769 using xda premium
Click to expand...
Click to collapse
http://forum.xda-developers.com/showpost.php?p=40121966&postcount=7 #1
hopefully it's not hardware-related problem
Lelus said:
http://forum.xda-developers.com/showpost.php?p=40121966&postcount=7 #1
hopefully it's not hardware-related problem
Click to expand...
Click to collapse
so i am having trouble with kdz fflash it hangs on 6 percent ive tried emergency cs emergency and diag theyt all do the same thing im not sure if i did the ufix correctley but it didnt seem like it did anything
mderuelle said:
so i am having trouble with kdz fflash it hangs on 6 percent ive tried emergency cs emergency and diag theyt all do the same thing im not sure if i did the ufix correctley but it didnt seem like it did anything
Click to expand...
Click to collapse
you don't need to flash any kdz.
if lg logo is still mirrored then uxfix did not work. did you run start.bat as an administrator?
Lelus said:
you don't need to flash any kdz.
if lg logo is still mirrored then uxfix did not work. did you run start.bat as an administrator?
Click to expand...
Click to collapse
didnt eveb think about doing that it worked thanks for the help i actually sold the working phone and switched carriers i have another one for sale if anyone would like. upgraded to s4 so no need for other device

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