My phone doesn´t start propely after being unrooted. - LG Leon Questions & Answers

My phone doesn´t start propely after being unrooted. After I hit the power button, it stays with the Vodafone logo on it until it shuts down for lack of batterie. I've also tried to connect it to the PC but it´s not recognized. The process - root & unroot - was all done in the phone itself. Any help, please?

Try to reinstall the KDZ

True ^
and next time use Kingroot apk.

Related

[q] rom manager

Need help, urgently
Yesterday i installed ROM MANAGER APPS from the market, I run Back-up from it, my phone restart it self. Later it's turn off and when i on back, "HTC MAGIC" word only appear then it when off and on again.
I tried to reboot all the combination, it wont work. I also tried take out the battery and put in back then press power+home, nothing change.
So, it's ,my phone brick?
rickytjp1107 said:
Need help, urgently
Yesterday i installed ROM MANAGER APPS from the market, I run Back-up from it, my phone restart it self. Later it's turn off and when i on back, "HTC MAGIC" word only appear then it when off and on again.
I tried to reboot all the combination, it wont work. I also tried take out the battery and put in back then press power+home, nothing change.
So, it's ,my phone brick?
Click to expand...
Click to collapse
Did you try to boot it up in bootloader/fastboot mode?
Never cause I'm new to android world. And I am not sure how too. Can you guide me pls? Thank you.

[Q] Phone bricked? Need some help here

I already had some problems with my X8, send it to repair and I got a brand new mainboard. I got it back yesterday..
Yesterday I installed floyo v0.25 and it worked properly, just that I had some app installing issues that I fixed. Wihile playing Angry Birds my phone freezed, so It removed the battery and tried to turn it back on, but it wont. Its still vibrating when I press the power button, but it wont boot. The LCD light turns on and off every few seconds but the software wont boot.
I tried to re-instal with SEUS, still the same problem. Now Im trying to flash a original SE ROM with a flash tool.
If this doesnt work too does anyone have another sollution?
EDIT: I tried the x10FlashTool and wanted to flash the generic 2.1 firmware, but when I tried to flash it I got a error message:
08/056/2011 15:56:49 - ERROR - Error flashing. Aborted
08/056/2011 15:56:49 - INFO - Now unplug the device and power it on
08/056/2011 15:56:49 - INFO - Then go to application settings
08/056/2011 15:56:49 - INFO - turn on Unknown Sources and Debugging
The problem is I cant power my phone on to change it, If I could there wouldnt be any need of doing the flashing.
I've seen somewhere (although I'm not so sure) that you can charge your phone via pc if you press and hold the "back" button and connect the usb cable..Then the green led light opens and that means that it's charging...
Yes, that is possible. I re-installed with SEUS but I still have the same problem. Couldnt reinstall with PC Companion because it didnt recognize the phone.
I need to get into the flash somehow, wipe it and replace with original files, but the x10flashtool is not working.
repair it again?
I would have to pay for repair this time because I dont have warranty anymore.
How much would a new mainboard cost? But Its not a hardware issue, the software doesnt want to boot.

[Q] Stuck on Firmware Update screen

Hey, I'm stuck on boot screen, can only get into TWRP but that's it. I'm trying to go back to stock using the flashtool method but everytime I try to boot into download mode my phone immediately goes to Firmware Update screen and stuck there so lg tool gives error saying phone is disconnected. Anyone have any ideas what might be casing this? Thanks for any help
http://forum.xda-developers.com/showthread.php?t=2448960
but it will wipe it clean like if you got the phone again
lampardd said:
Hey, I'm stuck on boot screen, can only get into TWRP but that's it. I'm trying to go back to stock using the flashtool method but everytime I try to boot into download mode my phone immediately goes to Firmware Update screen and stuck there so lg tool gives error saying phone is disconnected. Anyone have any ideas what might be casing this? Thanks for any help
Click to expand...
Click to collapse
Hold the power button until you get a black screen. Download LG Mobile Support tool and the LG Drivers. Plug USB In and then hold the Power + Volume Up key. On your screen, click Upgrade Recovery. From there, you can do a factory reset through download mode of your phone.
lampardd said:
Hey, I'm stuck on boot screen, can only get into TWRP but that's it. I'm trying to go back to stock using the flashtool method but everytime I try to boot into download mode my phone immediately goes to Firmware Update screen and stuck there so lg tool gives error saying phone is disconnected. Anyone have any ideas what might be casing this? Thanks for any help
Click to expand...
Click to collapse
In case you did the latest firmware ota upd,there is a topic that can solve you problem as long as you can access TWRP(even if you didnt do the ota it will,i tried that myself) Here is what you need to do.
use TWRP's "terminal command" option to run the following:
Code:
dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/fota
You'll have to type that whole thing out, and be VERY careful with spaces and punctuation. One wrong letter and you could nuke your phone.
This will probably fix you problem when it has to do with any update.
Thanks for the responses. I finally fixed it.. I started the procedure from scratch with a new laptop and somehow it worked lol
Sent from my LG-D802 using xda app-developers app
Hey,
I also have a lg g2 with android 4.4.2. I wanted to update it to android 5.0 with lg pcsuite. all was fine until there was an error, while my phone was in download mode. then lg pc suite said i should disconnect my phone
from the computer and then reconnect it and restart it. so i did but when I restarted the phone it was still in download mode and now lg pc suite says that it cant connect. Now when i start my phone it stays in the download mode.
My phone isnt rooted or smth else.
Can someone please help?
Frozen at frimware update and device doesnt get detected
Hi,
i have got the same situation now.
I tried to use LG support tool, it detects my phone but it shows that I havent enough memory to do restore.
How to erase some space when my phone is in download mode ?
Doing Restore upgrade errors using PC Suite, but it stops after approx 40%.
Hard reset doesnt work.
Thank you,
bananatuner said:
Hey,
I also have a lg g2 with android 4.4.2. I wanted to update it to android 5.0 with lg pcsuite. all was fine until there was an error, while my phone was in download mode. then lg pc suite said i should disconnect my phone
from the computer and then reconnect it and restart it. so i did but when I restarted the phone it was still in download mode and now lg pc suite says that it cant connect. Now when i start my phone it stays in the download mode.
My phone isnt rooted or smth else.
Can someone please help?
Click to expand...
Click to collapse
It happened to me and now phone hanged in download mode and can not connect to pc. Did you have a solution?
Solve
Guys! I had the exact same problem today. My solution was to keep pressing the "try again" button every time the error appeared on my computer screen. It took some time but the error was appearing at different levels each time in this order : 45% 57% 65% 80% and next the instalation was completed. If it doesn't work try switching to another computer if you can. After the firmware update hits 100% your phone will restart and the LG logo will appear(the led changes its color during this process). At this point you have to just wait a while. Then a dialog box will appear saying that the applications on your phone are configuring themselves. After that your phone will start and work normaly. The cause of the error is the lack of memory on your phone. If those idiots working for LG would say "YOU DON'T HAVE ENOUGH STORING SPACE" this stuff would not happen.
The phone is not rooted!(IMPORTANT)
Phone name: LG G2
Phone model: D802
Old software: 4.4.2 (KitKat)
Actual software: 5.0.2 (Lollipop)
I hope this hellped you solving the problem.
My lg optimus exceed 2 will only display on screen firmware update which is froze the phone won't do anything Please Help! !!!!
Turn of the phone and enter to download mode again and try flash to stock kdz file with lg flash tool
I had same problem "firmware update", simple just remove the battery and sim for 15 sec. then put it back and restart.
Hello
I can't access my LG g2 after trying to wipe the system and it runs on frozen screen. Kindly help out please
My LG x power died and I went to plug it in and a screen popped up saying,"Firmwire Update 0%", so I kept it plugged in for the next half an hour, and it still said 0%. I've tried resetting it and powering it off but nothing seems to be working. What do I do?
Andylag44 said:
Hello
I can't access my LG g2 after trying to wipe the system and it runs on frozen screen. Kindly help out please
Click to expand...
Click to collapse
Download lg flash tool.
Download lg g2 stock firmware.
Press volume up button and insert usb cable. You will see download mode.
Open lg flash tool and flash the kdz( original firmware) through flash tool.select cse flash.
My LG V20 got stuck on the Firmware Update screen. It appears every time I restart the phone and I have to take the battery out. If I start the phone plugged in it starts normally. I was able to do a factory reset, the phone started normally a few times without being plugged in, now it's back to the Firmware screen. I can use the phone but need to restart when it's plugged in. I hope Oreo Update will fix it. I don't know much about updates, but do big updates like that reinstall the drivers as well?
Hello everyone I also have this kind of experience so many times in my g2 mini.stuck on Firmware update. What I’m doing is,
1. remove the battery to turn it off. Plug your charger and before plugging it to your phone hold the volume down and plug in until tou see the android is updating; or
2. Just simply hold the powerbutton + volume down until you see Android is updating.
I would love to see your feedback if it helps.

[Q] Help going back to stock?

Hi, im in the process of selling my phone and am following the tutorial on here about turning the phone back onto stock. The flash with flashtool was successful but im forever stuck on the boot screen? with now no way to go into custom recovery? i installed the correct rom for the phone so why hasnt it worked? thanks in advance.
dav08094194 said:
Hi, im in the process of selling my phone and am following the tutorial on here about turning the phone back onto stock. The flash with flashtool was successful but im forever stuck on the boot screen? with now no way to go into custom recovery? i installed the correct rom for the phone so why hasnt it worked? thanks in advance.
Click to expand...
Click to collapse
The only way I could get it to work was the following; however there is one thing to try before you try my way because mine did this also - after the wipe and flash with flashtool etc. The only way I found to get out the bootloop was to do a factory restore after when its looping. So from the boot screen loop hold the power button until it goes off then on then off again.
Then do the process to get into the recovery so hold down and power then release power as soon as the lg logo appears (first one) then press it again immediately that SHOULD get ya to the grey factory reset screen. Press the power button 3 x and it should do a factory restore and boot up this time. First boot may take a minute it should eventually start up.
Failing that try this - Open the lg mobile support tool and connect the phone in download mode (volume up and power with plugged in usb on mine) then go to options and upgrade recovery. it will download a file usually about 2GB then install it, the phone will reboot at 100% on the phone and 80ish% on the lg tool it will then start into the setup feature,
DO NOT disconnect the phone until it gets to 100% and finishes. This way you shouldn't need to do an extra factory reset.
I understand for this the phone needs to be seen on com 4 (it shows on the phone screen) so if necessary go into device manager with the phone still plugged in in download mode and select com ports then select the phone com port then right click >properties> advanced and change the com port to 4. It may tell u its already being used but don't worry it is fine. Save and exit device manager.
please bare in mind these are just my experiences on MY LG D802 however its worked every single time for me without fail and ive done it a good few lol.
HTH:good:

Guys, my phone has turned into trash, or seeking help

Guys! Here's a problem. Yesterday has set itself a new stable firmware - 5.1.4.0A after the phone rebooted and hung on the OS boots. I decided to reinstall other version - now the phone is turned on, 20 minutes running and goes into an endless reboot (the logo MEIZU).
How can I escape from it? Flashing through recovery does nothing, it is possible as that through fastboot?
The only solution to boot up pressing th power button and "+" button. If it is power up the connect it to your pc. You must see a recovery drive. if not you need to install windows drivers for your phone. Then copy inside this drive THE VERY FIRST FIRMWARE that you phone was running before any upgrade. This was the only solution that worked for me and i try everythink else. Hope best luck.

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