Opening bootloader problem. Red text "error write sinature" appears. - LG Optimus 4X HD

I had that when try to open bootloader.
Here is how solved and bring phone back to life
U have to:
1. Start LG Service Tool on Your comp.
2. Take batt from Your phone off.
3. Push vol - and connect phone to comp. with USB cable (still hold vol- until U'll see green screen on the phone)
4. Put the battery to your phone and hold vol- again. U gonna get into S/W mode
5. Take recovery from option menu in LG Service Tool
6. Now wait until LG S. Tool finishes rescue Your phone
7. That's it. U get factory recovered, clean and fresh Optimus 4xHD
Hope it will help someone.
Sent med xda app-developers app

Related

Is my Galaxy Note Bricked?

Ok here is what happened.
- I rooted my galaxy note successfully.
- Installed CWM through the steps described in this forum
- Installed Titanium Backup
- Restored CWM 5.0.0.2 APP with data through Titanium backup (which was from a LG Optimus 2X)
- Pressed Restart into Recovery Mode (Note: I did not FLASH the Clockworkmod Recovery, i simply pressed RESTART INTO RECOVERY)
- Phone asked for super user permission, i gave it
- Phone restarts, is stuck in a black screen with the botton 2 buttons lighting up
- Was stuck there for 5 Min so i took out the battery
- Now phone will not power on... with or without wall charger plugged in.
Is my phone bricked? Is there any way to fix it?
Many thanks.
What about download mode? Can u get in?
Sent from my GT-N7000 using XDA
- Brain wasn't working and restored CWM 5.0.0.2 with data (which was from a LG Optimus 2X)
are you saying you restored from a non note backup image?
take the battery out wait 30 minutes and see if you can get into download mode
Could be probable that your bootloader is replaced, so yeah the chances are that you have soft bricked your phone and yeah there are definitely ways to restore it, so don't worry.
But see if your download mode works. press volume down+home+power all at a time.
i took the battery out for 30 minutes. Put it back in.
tried to activate download mode, there is no response.
normal power on wouldn't work either... sigh
mikescool said:
i took the battery out for 30 minutes. Put it back in.
tried to activate download mode, there is no response.
normal power on wouldn't work either... sigh
Click to expand...
Click to collapse
Do you have a usb jig?
no i don't. should i go find one of those phone fixing shops? they usually would have something like this right?
I did some research on the USB Jig, is it sure to put the phone in download mode for a soft brick?
if so, i can just buy one off ebay or something.
I did some research on the USB Jig, is it sure to put the phone in download mode for a soft brick?
Click to expand...
Click to collapse
Yes... i think you flashed another bootloader which does not support the three button combo. but download mode should still exist. The USB Jig will bring the phone to boot to download mode. It should work... if not, then you have a real bricked note
Try this:
- download and install KIES
- download and install Android SDK
- download and install Odin3
- open CMD (in Windows --> Start and type cmd)
- open Odin3
- remove battery in phone
- connect phone to pc via USB
- reinsert the battery in phone
- type in cmd:
Code:
adb reboot download
- looking for "added" in Odin3 (and Com Port)
- flash a stock rom for the SGN (better 3 parts and with *.pit)
Hi Chris,
Thanks for the suggestion but that didn't work. I guess i'll try the USB Jig tomorrow at a phone fixing place and if that doesn't work i'm not sure what i can do
Can you atleast access recovery mode by pressing volume up, home and power button?
..
I cannot access the recovery/download mode by using those button combo. The phone is totally non-responsive. Screen remains blank and buttons do not light up.
did you ever solve this issue?
so what happened... any update?
Moved To Q&A​
Please post all questions in the Q&A section​

Stuck in Boot and no way to enter Recovery

Hello LG-2x owners !
I am in a big mess!
I just installled a new rom: http://forum.xda-developers.com/showthread.php?t=1699066
My Problem:
When I start my phone , it stucks in the boot. The bootlogo appears, it loads a few seconds and then it just reboots. Over and over again. No deal, I dealed allready with a thousands of bootlops but I cant enter the recovery menu in this case.
Why not? I push all the buttons like Power + Volume Up or Power + Volume down but it enters the boot.
I am so confused and out of plan.
How could I fix it?
Please help me XDA-Community!
Are you pressing the volume and power button past the first LG logo (white only) until you get to the second LG logo (with blue halo in background)?
Try releasing the keys only after you see the second logo.
Sent from my LG-SU660 using xda premium
Thanks for your reply, buddy
I really appriciate it.
The logo wih the colorfull background is not appearing. Thats the main problem, the entrance to the recovery is not there anymore. No colorfull lg logo, nothing.
Its like this: I push the requiered buttons at the very beginning, while pushing this buttons the phone starts. The LG Logo appears (without Background) and the bootlogo appears from this rom.
You might have to reflash your phone and start all over again. Check here for an emergency flash.
Assuming you have it backed up, you can also try this to hard reset:
http://www.knowyourmobile.com/lg/lg...3107/how_to_hard_reset_the_lg_optimus_2x.html
aragorn7 said:
Assuming you have it backed up, you can also try this to hard reset:
http://www.knowyourmobile.com/lg/lg...3107/how_to_hard_reset_the_lg_optimus_2x.html
Click to expand...
Click to collapse
This will ONLY work if you're able to boot your phone normally, and able to access the menus. And if he has CWM installed, holding the power button + vol down will enter CWM automatically. Correct me if I'm wrong!
korgndm said:
This will ONLY work if you're able to boot your phone normally, and able to access the menus. And if he has CWM installed, holding the power button + vol down will enter CWM automatically. Correct me if I'm wrong!
Click to expand...
Click to collapse
Hes right. I allready tried it. Not working.
Could you PLEASE make a detailed guide for me?
I just dont understand how to install ne nv flash drivers and stuff.
Please make a tutorial for me becuase I dont get the other one
Take a look here.
I saw this link allready but I dont understand the thing with installing the "ATX drivers".
I dont understand it because I got german windows and on top of that there are no photos or anything to know what he means so could you make something else to make it easier to understand?
Do you have take out the accu, take back in, and then hold power and vol-down till 2. boot logo appeared?
Gesendet von meinem HTC One S mit Tapatalk 2
it cant be more easy.
after you pull out the battery you press vol down vol up and connect with data cable to pc. nothing appears, but you go to control panel, then to system and there to device manager, you will se list of all devices and one of them will have some symbol. i think its question mark, you will click it with right mouse button and choose update driver, you will click find driver manually and find the directory with driver extracted from downloaded archive. click ok and driver is installed.
then you can navigate in windows terminal to folder with extracted archive and run the *.bat script with internal or external storage. you can download archive with whole rom on other threads or forums and by run the *.bat load new rom t phone
XXMrHyde said:
Do you have take out the accu, take back in, and then hold power and vol-down till 2. boot logo appeared?
Gesendet von meinem HTC One S mit Tapatalk 2
Click to expand...
Click to collapse
I did everything like described by the other links. It looks like this emergency flash is the last chance to get the game on.
Could you please explain me how I can install this apx driver ?
Zakkusu said:
I did everything like described by the other links. It looks like this emergency flash is the last chance to get the game on.
Could you please explain me how I can install this apx driver ?
Click to expand...
Click to collapse
The instructions on how to install the apx driver is here (see step #2):
http://forum.xda-developers.com/showthread.php?t=1327599
I did it !
Thank to the guide and to you guys, thanks a lot !!!
INSTALLING NVFLASH UTILITY (USING WINDOWS 7)
1. Download NVFlash Utility and Drivers here, and extract to a location of your choice (e.g.: Desktop);
2. Turn off your phone, remove the battery, SIM card and external SD;
3. Hold VolUp + VolDown buttons at the simultaneously and plug in your USB cable (if you use a desktop computer, I recommend using your rear USB ports). Your phone will show a black screen and you should see Windows trying to install a new device, but failing.
4. Right click on the notification showing a failed driver instalation (bottom right corner of your screen), and select 'Update device driver';
5. Select 'Browse computer...', and then select 'Let me pick...', followed by 'Have disk'.
6. Browse to directory you extracted the the zip you downloaded earilier, and point to 'usbpcdriver';
7. Accept any warnings, including the big red alert (you may need to disable UAC);
8. Now in Device Manager under 'USB Controllers' you should have an 'NVIDIA USB Boot-recovery driver for mobile devices';
If everything goes alright, you should now be prepared to flash your phone using NVFlash.
FLASHING YOUR DEVICE
This is the easy part.
Just go to the folder where you extracted the zip, and run 'flash'.
Wait until the utility works its magic and when complete, disconnect your phone from the USB cable, put the battery back in and SIM Card, and reboot to the stock LG ROM.
First boot might take a while, but it will eventually boot and that's all there is too it.
Hope this helped!
Credits to djmcnz @Modaco for the guide.

black screen HELLP!!!!!!!!!! Atrix MB886

My phone is AT & T MB886 with native JB. I could access the black screen with blue letters, I made the recovery, clearing cache, etc etc etc, will not start, see the initial logo motorola and then the screen stays black. how I can reinstall the operating system android jb?? can be done from the SD?? as I do?? before I pass this problem had the phone rooted. The problem appeared after doing a factory restore on the phone tonces not start and I am the black screen with very little light.
Easy fix dude!
Follow these steps to put your device into fastboot.
(1. Turn off your phone.
(2. Hold vol up + vol down, immediately.
(3. Use vol down to quickly scroll to "ap fastboot."
(4. Press vol up.
(5. Connect usb to the pc.
(6. follow this tutorial by Huatz84.
Good luck dude.
OK!!!
Codex01 said:
Easy fix dude!
Follow these steps to put your device into fastboot.
(1. Turn off your phone.
(2. Hold vol up + vol down, immediately.
(3. Use vol down to quickly scroll to "ap fastboot."
(4. Press vol up.
(5. Connect usb to the pc.
(6. follow this tutorial by Huatz84.
Good luck dude.
Click to expand...
Click to collapse
sorry for my English, I'm from Argentina. After three attempts I managed to install android, it works fine, no problems, and is the same as it was before. This same process can install any other ROM?? you could tell me what to do to transfer to SD memory phone memory or install applications on the SD??

Phone Wont Turn on. At all!

So I upgraded to V20B last night through the LG PC SUITE, and it was working fine. This morning, the phone had random lines through the screen. So i read that i should go back to V10, so i plugged phone into the computer to enter s/w mode. Then the computer wouldnt recognize it in LG Flash Tools or KDZ_FW_UPD. So i removed the battery, and now i cannot get into s/w mode. The phone will not turn on at all! No recovery, No LG Logo, NOTHING!!
PLEASE HELP!
THANKS
try pulling your battery and reinsert. Sometimes this happened to me that the screen was black and i couldn't do anything till i pulled the battery.
maybe your batteries empty ?
try putting out your battery, insert usb and hold volume down to get to sw mode then reinsert battery.
Sent from my LG-P880 using xda app-developers app
faraband said:
So I upgraded to V20B last night through the LG PC SUITE, and it was working fine. This morning, the phone had random lines through the screen. So i read that i should go back to V10, so i plugged phone into the computer to enter s/w mode. Then the computer wouldnt recognize it in LG Flash Tools or KDZ_FW_UPD. So i removed the battery, and now i cannot get into s/w mode. The phone will not turn on at all! No recovery, No LG Logo, NOTHING!!
PLEASE HELP!
THANKS
Click to expand...
Click to collapse
Well... why you don't try, without battery, press vol- and connect to PC.
If you get in S/W Mode, put the battery back and reflash. If Not, try again
with the battery on, to get in S/W Mode.
Its very wierd that the phone just don't "answer"
RuedasLocas said:
Well... why you don't try, without battery, press vol- and connect to PC.
If you get in S/W Mode, put the battery back and reflash. If Not, try again
with the battery on, to get in S/W Mode.
Its very wierd that the phone just don't "answer"
Click to expand...
Click to collapse
I tried those suggestions, but nothing works. Screen does not show anything or even flicker.. I tried flashing kdz, tried lg recovery..
Is there any way to force the kdz without being in s/w mode?
In my condition, sometime removing battery to get to s/w upgrade mode worked, but sometime it won't. When that's happened, I try to get s/w upgrade mode with battery in my phone, and worked. And another thing, use usb 2.0 on your pc/laptop, don't use usb 3.0, it will never worked.
Sent from my tf101

Brick my lg

Hi, i try to install a custom recovery but my phone now doesnt power on.
when i try to enter in the recovery it gives me errors that say in red in top of the screen
error boot image signature
5 seconds after power is turned off for batery saving
and when i try to power on my phonr it stay with the lg logo and dont start the phone
can anyone please help me
sker100 said:
Hi, i try to install a custom recovery but my phone now doesnt power on.
when i try to enter in the recovery it gives me errors that say in red in top of the screen
error boot image signature
5 seconds after power is turned off for batery saving
and when i try to power on my phonr it stay with the lg logo and dont start the phone
can anyone please help me
Click to expand...
Click to collapse
Hi,
This should help you restore your phone to working state:
http://forum.xda-developers.com/showthread.php?t=2179126
i already have seen some tutorials where butt my problem is connect the phone with pc, when i press the power and volume down the lg gives-me the error i said and the phone turn off, so i don't know how to connect the phone with the computer ...
just downloand open europe v20a flash it with kdz flasher remove battery put usb cable while holding the volume down after you mast have install lg drivers run kdz flasher slect the kdz and press flash put the battery back and leave the phone the program will freeze is normal dont afraid and after when the phone open unlock your booltader first root it and after downloand rom manager and flash recovery through this app but is not touch recovery is normal recovery
Can't this be solveed by simply reflshing recovery?
The phone gets into s/w mode so just type from terminal
-> fastboot flash recovery "recovery.img"(change with name of img file in this case)
Obviously try with a recovery different from the one you already tried with

Categories

Resources