Hello everybody,
I am an owner of an
rooted LG G2 D802. When i got the devide i used an Stock Rom from storagecow.eu (the Germany Open 16GB Kitkat D80220D_00.kzd). After that i rooted the phone and everything worked perfect for a couple of months.
But a week before the phone began to lagg extremely, so i decided to restart the phone. But after that I got stuck in a bootloop, without knowing what reason caused the trouble.
This is how it looks like when i get the bootloop.:
LG logo appears, LG Animation starts, blinking LG logo comes back and thats all. And the LED is blinking continuously in the colors green-lightblue.
Video: youtu.be/7cD2P5yQnXQ?list=UU-Erq7q7p0WXveYTEqWsAQg
I tried the following things:
Hard Reset
Only getting into the menue with the combination:
Power und Vol - untill the LG logo appears.
Power und Vol - releasing, then pressing Vol+ and Vol- untill Recovery appears.
Click to expand...
Click to collapse
I navigate through the menue and then do a hard reset. After all is done the phone stucks at the bootloop again (LG Logo constantly showing up) and the LED is blinking in the colors green-blue.
Video: youtu.be/NhbKCi_mikI?list=UU-Erq7q7p0WXveYTEqWsAQg
Recovery Mode
Instruction:
Now, press the volume down and power button at the same time for 2 or 3 seconds until the LG logo appears on the display.
Then release the buttons and then press and hold them again.
Click to expand...
Click to collapse
Result:
LG G2 turns off
Download-Mode
Pressing and holding Vol+ Key and then connecting it to my Win7 computer via USB cable.
Click to expand...
Click to collapse
Then the LG logo appears and stays for a few seconds. After that it only shows the battery charging symbol. But there are some Windows sounds that pop up when you successfully connect some USB devices. But nonetheless it does not help me to fix my phone.
So please everybody help me to repair my lovely LG G2 smartphone
b-12-3838 said:
Hello everybody,
Download-Mode
Then the LG logo appears and stays for a few seconds. After that it only shows the battery charging symbol. But there are some Windows sounds that pop up when you successfully connect some USB devices. But nonetheless it does not help me to fix my phone.
So please everybody help me to repair my lovely LG G2 smartphone
Click to expand...
Click to collapse
Hello!
If the LG Logo and then it only starts to charge the phone, then you're not entering download mode the right way.
Please follow this guide:
http://forum.xda-developers.com/showthread.php?t=2432476
To enter download mode: Press and hold the power button for 12 seconds to turn off the phone.¨
Press and hold Volume Up and plug the phone into your computer.
NOTE: make sure you have the right drivers installed. Everything you need is listed within that guide!
Hi, thanks for info.
Today i tried everything again. This time i took a laptop with fresh installed Win7 64Bit, no Antivirus installed, all updates included and Visual C++ installed as shown in the thread. After that i downloaded the Stock Rom Germany Open 16GB KitKat D80220D_00.kdz, then i installed the drivers and reboot my laptop. Then i extract the Flash Tool.
Every piece of software i downloaded from the links listed in the thread.
And still i can not enter the download mode. First of all i ensure that the phone is off by holding the power button for 12 seconds after i try to start the phone. Then everything gets turned off.
I did this:
1) I installed visual C++, installed LG drivers, rebooted pc, extracted LG flash tool
2) Turn off the phone (12 seconds holding power button)
3) Plug in USB micro to Smartphone and keep pressing all time long the Vol+ key till the end of the process
4) Plug in USB to laptop and connect Smartphone with Laptop
5) Windows shows that drivers are being installed (it recognizes some USB connected to pc). After a while it shows the message that everything was installed correctly.
6) Simultanously the LG Logo appears on the phone and after a few seconds it only shows me that the phone ist being charged (100%-battery-status-symbol).
7) But on the phone there does not pop up the message "Download mode". And in Windows i cant see the smartphone mounted with a drive letter or anything similar to it. When i start the LG Flashtool and try to flash it, then it shows me during the recognition of the phone "the phone is disconnected from pc", so the Flashtool is not able to flash (because the phone does not seem to enter download mode).
Please help me to get my LG D802 back
I dont know what to do now.
Any suggestions?
Furthermore I ask myself if I just could buy a 32GB LG G2 with a broken display on ebay and replace the display of my 16GB D802 with the components of the new bought 32GB D802 (without boot loop)?
This I could do in the worst case if nothing else helps
Question B:
I have a LG G2 (D802) with 16GB with a Bootloop.
If I buy a LG G2 (D802) with 32GB with a broken display, can I replace the working display and all of its components with the broken Display from the D802 (32GB) so that i get a working 32GB-version of the phone?
So i want to start a repair to get my G2 back as soon as possible.
Can anyone please answer?
Question A:
Shall i record a video of me trying to enter the Download Mode of my G2?
What to do now
Is there nobody who has any suggestions on this problem?
Is the phone really that much messed up?
Edit: Nobody answered my questions, so i decided to call the LG support and to send the phone to their repair services. So the phone is sent to their repair services now. Lets see what happens.
Hi, the device has been repaired by the LG Electronics Support (technician Support)
"Failure: Swap Board (Main, RF): Impossible to Repair"
Replacement: PCB Assembly, Main, Refurbished Board + 1x Battery"
Thx for the support!
Hello, I'm having some of the same issues that you were having with your G2 and I'm debating on sending it back for repair.
However I was wondering how much it cost you for the repair or if the phone was under warranty? My phone is about 2 months out of warranty so I'm worried it will cost me more to fix it then to just buy a new phone.
Thanks for your help!
Sent from my LG-D800 using XDA Premium 4 mobile app
Related
I have an p700 with cm10( last version ), cmw touch last version, crossbreeder and first version of custom kernel (without oc). Run perfectly until yesterday. I intended to flash new kernel (V4). Battery was at 9 percent full. Reboot in recovery mode and... shock ... black screen. My phone is dead. Nothing... no power, no joy....
Thank you for help...
Sent from my Galaxy Nexus using Tapatalk 2
did your charge it? did it boot? can you enter recovery or emergency?
and why did you flash with only 9%?!?
h4x0r007 said:
did your charge it? did it boot? can you enter recovery or emergency?
and why did you flash with only 9%?!?
Click to expand...
Click to collapse
From my experience with p500 (optimus one) 9% battery it more then enough for flash an kernel ... but it seems that 9% was not for real (first version of custom kernel has problem with battery status). Anyway ... after I downloaded the new kernel (v4), from reboot menu (cm10) I gave the reboot recovery command ... "Rebooting now" ... and ... instead of recovery mode, the phone was powered off. So I never got to flash ... Now it's dead, does nothing ... No power (with or without battery and the power cord plugged in), no recovery mode, no emergency mode, no charging.
I used original charger (0,75 A), after that an Samsung charger (1 A), after that an Logitech charger (1.5A).
I tryed to charge with my laptop from USB 2.0 port and 3.0 port, and with my desktop computer ( USB 2.0, 3.0 )... All I've got is THE BIG NOTHING.
Thank you for replay...
It just happen to Me..!
Recently it works fine and I did nothing..
Battry on 66%, and try to refresh the system via reboot.
Few seconds, screenlight turn off.
I've keep waiting. it usualy showing LG logo after 10seconds.
But nothing happen.
Try to power on and also try CMW shortcut.
It still blackscreen, no vibrate, no light.
Is there a way out of here? or any solutions?
:sad:
gefademe2d said:
It just happen to Me..!
Recently it works fine and I did nothing..
Battry on 66%, and try to refresh the system via reboot.
Few seconds, screenlight turn off.
I've keep waiting. it usualy showing LG logo after 10seconds.
But nothing happen.
Try to power on and also try CMW shortcut.
It still blackscreen, no vibrate, no light.
Is there a way out of here? or any solutions?
:sad:
Click to expand...
Click to collapse
Unfortunately, the only way to bring it to life is JTAG. I paid ~ 35Euro for JTAG-ing.
damn
damn i want cm10 too, bet im to scared with bootloader unlocking etc after reading posts...
Its happend to me too and i found a way to get out there
Tip: NEXT TIME DO NOT INSTALL ANY KERNEL!!!
This is the solution:
1. Download LG Optimus L7 USB Driver for Windows | Mac
Download official LG Optimus L7 stock firmware from this page. The file would be a .kdz file. Download the appropriate firmware according to your network provider and country.
3. Download KDZ updater and install it on your computer.
4.The zip file has a Microsoft XML parser, make sure you run it as an administrator and restart your PC. This will solve the wparam 100 and lparam 6 issue mentioned in a comment below.
5.The next step is to put your phone into emergency mode. To do this, remove the battery of your phone and re-insert it (don’t turn it on). Press and hold Volume Up button and Volume Down button. While you are pressing the two buttons, press the Power button. So now, you must be pressing all three buttons together. See this video
6.Your phone will boot into emergency mode and you should see a yellow screen with Emergency mode written on it.
7.Pick up the USB Cable and connect your phone to the computer via the USB Cable.
8.Run KDZ updater as Administrator.
9.Choose the following options in KDZ Updater: Type: 3GQCT Phone Mode: DIAG and KDZ file is the one you downloaded in step 3.
*image:
http://www.hackmyandroid.com/wp-content/uploads/2012/09/Root-LG-P350-LG-Update.png
10.Re-check with the image above and ensure that you have the appropriate settings on the KDZ updater.
11.Take a deep breath and click on “Launch Software Update” button.
12.This process is usually long. It take quite a long time for the firmware to be flashed on your phone.
13.If everything goes well, you will see “Finished” written in the log screen and your phone will change to switched off mode from Emergency mode.
14.The next time you turn it on, your phone will take a lot of time to reboot. Stay Cool! its normal.
david08 said:
Its happend to me too and i found a way to get out there
Tip: NEXT TIME DO NOT INSTALL ANY KERNEL!!!
This is the solution:
1. Download LG Optimus L7 USB Driver for .......
Click to expand...
Click to collapse
I knew this method ... but in my case, the phone does not respond to any command.
heruur2 said:
I knew this method ... but in my case, the phone does not respond to any command.
Click to expand...
Click to collapse
When you turn on your phone that shows you the LG logo?
david08 said:
When you turn on your phone that shows you the LG logo?
Click to expand...
Click to collapse
It has no power...
heruur2 said:
It has no power...
Click to expand...
Click to collapse
Connect the device into electricity and not to your computer.
For 1 hour and try again
david08 said:
Connect the device into electricity and not to your computer.
For 1 hour and try again
Click to expand...
Click to collapse
Thank you for help...
BUT...
I try already for many hours, with 3 type of chargers... (0.75A - original charger, 1A and 1.5A)...
As i told in my previews post ... Now it works ... After JTAG-ing...
david08 said:
Its happend to me too and i found a way to get out there
4.The zip file has a Microsoft XML parser, make sure you run it as an administrator and restart your PC. This will solve the wparam 100 and lparam
Click to expand...
Click to collapse
It is not possible to run that file as an administrator. I tried on 3 different systems: Win 8x64, Win 7x64 and Win 7x32. I have a logo stucked but after few seconds it plays the sound and logo does it's animation then same static logo and then it stucks. Is there any solution besides j-taging? Does warranty service cover this as a defect and repair for free?
Thanks
Kastuvasesi said:
It is not possible to run that file as an administrator. I tried on 3 different systems: Win 8x64, Win 7x64 and Win 7x32. I have a logo stucked but after few seconds it plays the sound and logo does it's animation then same static logo and then it stucks. Is there any solution besides j-taging? Does warranty service cover this as a defect and repair for free?
Thanks
Click to expand...
Click to collapse
Try hard reset :
1. When the phone is switched off, press and hold the Volume down key + Power key with your left hand.
2. When the LED on the bottom of the phone lights up, touch and hold the Menu key with your right hand. You need to do this immediately, before the screen displays the LG logo. Make sure your left hand is still holding the Volume down and Power keys.
Then release the power key at vibration time.
3. When the LG logo is displayed on the screen, continue to hold the keys for around 2 seconds, and then release all
them at the same time, before the LG logo disappears.
Leave your phone for at least a minute while the hard reset is carried out. You will then be able to switch your phone back on.
Caution: If you perform a hard reset, all user applications and user data will be deleted. This cannot be reversed.
I can't boot into emergrency mode. I have tried: vol up + power (with battery), vol down + usb cable (without battery) and nothing - phone just turning on as normally. I have installed Galaxy S4 beta 2 ROM.
Please help me!
same issue here
i flashed V10D_downgrade.kdz afther a few minutes KDZ crushed
phone rebooted by it's own,
but:
the phone makes the LG logo sound
the screen is always black
the 2 touch buttons never become white
phone fails to enter in recovery mode
connecting the usb cable the pc finds the phone as MassStorage ( phone makes the connect sound )
no adb response
kdz software dones't find the phone
some tips ? tkz
You may want to try this:
www dot hard-reset dot com/lg-optimus-l7-p700-hard-reset dot html
(replace dots with . )
it worked for me
my touch keys never get white again...
i think i fked up the boot section..
service here i come
there are 6 days from now...l have no recovery,download or fastboot mode...only this fu**ing LG logo...l can use adb commands on windows 8.1 but it not help very much because my device is not rooted and and can't run adb shell( device read-only error)...all l have to do is to root the phone, BUT HOW..I've tried manualy install root to get adb shell work...no chance...l have another laptop with ubuntu,but this time my device is attached offline on ubuntu terminal...HELP!I dont know what to do:crying:
edit:LG G2 F320L
is there some way to get fastboot mode working if i'm not rooted?...
edit2: 3 weeks and l found nothing for my phone:crying
edit3: 4 weeks and no chance to get my phone back ...
Which phone? Asking for help with zero info on what you're using and what you've done isn't likely to illicit much.
Just do a full reset (from power on) and then flash stock kdz.
LenAsh said:
Which phone? Asking for help with zero info on what you're using and what you've done isn't likely to illicit much.
Just do a full reset (from power on) and then flash stock kdz.
Click to expand...
Click to collapse
sorry...F320L korean version
How can l do a full reset from power on?
Press and hold power button until it turns off. Then press and hold power button and volume down then power button thrice
Sent from my LG-D802 using XDA Premium 4 mobile app
vPro97 said:
Press and hold power button until it turns off. Then press and hold power button and volume down then power button thrice
Sent from my LG-D802 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
l can't turn it off with power button...when l press it my device restart and lget LG logo..l can turn it off only if l pull the battery out.....tried this trick with physical button ....but it doesn't work:crying:
manager77 said:
there are 6 days from now...l have no recovery,download or fastboot mode...only this fu**ing LG logo...l can use adb commands on windows 8.1 but it not help very much because my device is not rooted and and can't run adb shell( device read-only error)...all l have to do is to root the phone, BUT HOW..I've tried manualy install root to get adb shell work...no chance...l have another laptop with ubuntu,but this time my device is attached offline on ubuntu terminal...HELP!I dont know what to do:crying:
edit:LG G2 F320L
is there some way to get fastboot mode working if i'm not rooted?...
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2582142 , hope it helps bro , goodluck
l send my phone to LG service 2 day ago and they contact me today....bad news: my phone can not boot to the end and can't be recognized by any device(original LG tools and cables etc.) to be repaired.l have to send it back...... where the phone was purchased(Singapore)
I feel bad for you but hope you've learn a lesson, read more and more and more before doing anything to your phone. If you don't know or not sure or unclear, don't go for it yet.
Anyway, still under warranty?
votinh said:
I feel bad for you but hope you've learn a lesson, read more and more and more before doing anything to your phone. If you don't know or not sure or unclear, don't go for it yet.
Anyway, still under warranty?
Click to expand...
Click to collapse
No warranty...and believe me that l always read before making something wrong with my phones...bad luck....my last hope it could be jtag solution but is expensive..
To switch off your phone. Hold the power button about 10 second. you will see screen completely black, or unplug your battery.
To do hardware reset for F320L. Press and hold power+ volume-, when LG logo appear release power button only and press power again. You can see Hard reset mode.
After that, if your phone still not reboot. Try to flash KDZ or TOT in download mode.
To access download mode : Press volume- and plug your phone to PC
If you can not access download mode. plug your phone to computer and check what driver you have in device manager. If you got only Qusb-Bulk. Its bricked completely.
If you plug your phone to Windows and got a lot of message come up to format it. press cancel and don't format it. then follow :http://forum.xda-developers.com/showthread.php?t=2582142
cccho said:
To switch off your phone. Hold the power button about 10 second. you will see screen completely black, or unplug your battery.
To do hardware reset for F320L. Press and hold power+ volume-, when LG logo appear release power button only and press power again. You can see Hard reset mode.
After that, if your phone still not reboot. Try to flash KDZ or TOT in download mode.
To access download mode : Press volume- and plug your phone to PC
If you can not access download mode. plug your phone to computer and check what driver you have in device manager. If you got only Qusb-Bulk. Its bricked completely.
If you plug your phone to Windows and got a lot of message come up to format it. press cancel and don't format it. then follow :http://forum.xda-developers.com/showthread.php?t=2582142
Click to expand...
Click to collapse
with buttons combinations l can not get DL or recovery mode... driver shows LG Phone device in windows device manager...before, the led was flashing red but now is green all the time with LG logo on display...l send it to LG service in my country and they told me my device doesn't comunicate with repair tools..they haven't support for korean version, only europeans models....with windows 8.1 l can use adb commands but can't root the phone to use adb shell(root),so without root no chance to do something....with ubuntu 13.10(use wubi to get dual boot) l can see in terminal serial number but my phone appears to be OFFLINE...so no chance to do something with this method.....there is not support for LG G2 jtag....l'm depressed...3 weeks with no hope
Why haven't you sent it off yet mate?
Sent from my LG-D802 using XDA Premium 4 mobile app
vPro97 said:
Why haven't you sent it off yet mate?
Sent from my LG-D802 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
when l'm using VRoot app ad ex....this app recognized my device lg g2 f320L , but the software is from F320s..so this avoid warranty...solution is to change the motherboard...but it is 250 fuc''g euros
Can you use adb to push file into /system folder ?
This is the only way to replace your build.prop file to change F320s to F320L
Well I am a bit confused... mostly because this isn't so clear...
When you hold power button it reboots, but if you continue to hold it, it will shut itself down.
It's this way on LG G2 D802 and should be the same on yours.
When it's shut down, hold volume down and then power, when you see the LG Logo release the buttons and hold again volume down and power button. This should get you to recovery...
Try it like this?
I play around with my G2 alot and I have had the LG logo issue several times.
I use PhilZ Touch Recovery and TWRP to backup valuable files.
PhilZ Recovery with AROMA File Manager and if that isn't set up I use TWRP Recovery.
You need a USB OTG connector for this...
cccho said:
Can you use adb to push file into /system folder ?
This is the only way to replace your build.prop file to change F320s to F320L
Click to expand...
Click to collapse
heve to be rooted to do this ...and i can't root it
IrfanCore said:
Well I am a bit confused... mostly because this isn't so clear...
When you hold power button it reboots, but if you continue to hold it, it will shut itself down.
It's this way on LG G2 D802 and should be the same on yours.
When it's shut down, hold volume down and then power, when you see the LG Logo release the buttons and hold again volume down and power button. This should get you to recovery...
Try it like this?
I play around with my G2 alot and I have had the LG logo issue several times.
I use PhilZ Touch Recovery and TWRP to backup valuable files.
PhilZ Recovery with AROMA File Manager and if that isn't set up I use TWRP Recovery.
You need a USB OTG connector for this...
Click to expand...
Click to collapse
no way to go to recovery or DL mode with physical buttons...when l hold down and power after l see LG logo ,my phone shows on display only chinese charaters....with power and volulme up + insert usb my phone shows download mode on display but it's not the really DL mode
manager77 said:
no way to go to recovery or DL mode with physical buttons...when l hold down and power after l see LG logo ,my phone shows on display only chinese charaters....with power and volulme up + insert usb my phone shows download mode on display but it's not the really DL mode
Click to expand...
Click to collapse
Try this for getting to download mode it worked for me:
1.) don't push any buttons, just plug phone into computer using usb cable
2.) push and hold power button + volume up button
3.) do not let go when you see LG logo, continue holding
4.) after a few seconds you should be in download mode
hookinafish said:
Try this for getting to download mode it worked for me:
1.) don't push any buttons, just plug phone into computer using usb cable
2.) push and hold power button + volume up button
3.) do not let go when you see LG logo, continue holding
4.) after a few seconds you should be in download mode
Click to expand...
Click to collapse
no chance to get DL MODE
there should be a way of doing it through linux???
restoring everything back to your phone
I have international D802 where I have installed a custom rom based on android 4.4.2. Yesterday I wanted to upgrade it to an android 5 rom and and mistakenly installed a new custom rom that was builded for F320S. After reboot only the fastboot mode was displayed. Then I’ve tried to repair the download mode by flash the img files, but as I’ve verified later they was not intended for LG G2 D802 32Gb version. So now if I try to enter either the download mode or the hard reset / recovery I see only the LG logo with security error.
I’ve tried a different button-combinations. Please correct me if it was wrong.
For power off I’ve pressed the power button for about 15 seconds, wait until the logo is displayed then hidden then shortly displayed again and then the display is black.
For hard reset / recovery I’ve pressed press volume down button and power button together until the LG logo appears on the screen. When the LG logo is displayed, un-pressed the power button, but keep pressing the volume down key and then pressed once more the power button. Then the LG logo is displayed again, and then below was the security error displayed.
For download mode, I’ve pressed and hold the volume up button and connected the USB cable. But after some seconds the security error was displayed and the device manager in windows didn’t showed any changes.
Is it possible to recover the phone from the security error state? Any help would be appreciated.
EDIT:
Solved in following steps.
1. Open the phone like described here: LG G2 is UNBRICKABLE NOW!
It was not hard and you don't need any special tools, only a small screw driver. Look first this both videos https://www.youtube.com/watch?v=15krGmydqgQ&feature=youtu.be and http://forum.xda-developers.com/show....php?t=2582142. The do the steps till you can access the processor chip. Ensure the battery is disconnected. By disconnecting the both left and right plates be sure to separate it from the surface.
2. Connect the phone to the PC with USB cable. Open the device manager.
3. Short the test pins on the chips, see the https://www.youtube.com/watch?v=FiofVOqfnxw with e.g. bent paper clip till you'll see the new QHSUSB qualcomm 9006 connection on COM port. Then you'll see a lot of windows messages about to format the new founded partitions. Close them.
4. Flash an images, like laf.img,aboot.img, boot.img from your phone model using export very partition see https://www.youtube.com/watch?v=_d5b_osUTug for details and files.
5. Now the download mode is available. Remove the usb cable, enter the download mode and flash a original stock rom for your model using the LG Flash Tool 2014.
Now your phone is unbricked!
Any questions?
What is the security error on LG G2? Is it a common way to reset some settings to reset it?
Added solution in the first post. If you have any questions, please post.
Ive done till step 3, only one window poped up, and i don't get step 4, i still got the security thing...
Help I guess?
avi57 said:
Ive done till step 3, only one window poped up, and i don't get step 4, i still got the security thing...
Help I guess?
Click to expand...
Click to collapse
You've shorted a wrong pin, please try again step 3 untill you will see the qualcomm 9006 and not 9008 or another number.
Hello guys. Obviously, this is my first post. I did soft-bricked my LG L7 phone 2 days ago. I foolishly flashed a wrong ROM that was meant for L5 devices and the result was, when it rebooted, showed a blue screen. I searched for a solution but I can't find a direct answer.
Be sure to remove your sim and sd card before doing the steps below, just to keep things in order.
1. Download LG Mobile Support Tool from official LG website, install and run it as administrator. Wait for a while, it might take a minute to show up.
2. Put your phone in emergency mode: remove battery, press and hold volume up (+), then plug into computer using your USB cable. You will see a yellow screen with "emergency mode!!" on it. Then, immediately put the battery back.
3. Click "Install USB driver" in the LG Support Tool after your device has been detected. It will auto download and install the United Mobile Driver. Ignore other zip files that will pop-up.
4. Click "Options" then "Upgrade Recovery". If all is right, it will analyze your phone. It will also download and install the stock firmware of your device. Have a glass of wine first and wait it to finish its operation then close afterwards. Your device should reboot.
5. Unplug USB cable. Remove battery and after a minute reinsert it. Turn your phone on. If you're stuck on LG logo then proceed to the next step.
6. Do a HARD RESET:
1.Power off your phone
2.Press together with left hand volume down + power button
3.When the led of the bottom of the phone lights on,touch and hold the menu key with your right hand
4.When phone vibrates release power button
5.Release all the keys of the phone before Lg logo disappears
6.Wait until the phone restartsYou can also search for youtube on how to exactly do a hard reset.
That's it!
Hey guys, i had a complete hard brick a couple of days ago...tried everything nothing worked, eventually had to change the motherboard and now the 2nd sim card doesn't work, please help i have an lg optimus l7 ii p715 dual running root stock JB