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Root [[GUIDE]] Unbrick/Manual Update (UPDATED)

Swainsmith82

Swainsmith82

Android Expert
UPDATED: January 22nd

1) Download the v10dkdz or v10ekdz

2) Download LG mobile support tool and Install it. (It will open up when its done just CLOSE IT OFF) https://www.dropbox.com/s/1ckig41xdqoi2u1/B2CAppSetup.exe?dl=0

3) Download / R&D Test tool
https://www.dropbox.com/s/n5nndrdxowmq3yy/UpTestEX_mod2_marwin.exe?dl=0

Power off your phone, press Volume Up & and then plug in the usb cable (enter to a download mode/upgrade mode)

5) Run UpTestEX.exe

6) In R&D Test Tool window,
Select Type = 3GQCT (top left hand side)
PhoneMode = DIAG (top right hand side)
Select kdz file = click to select your LG stock rom *.kdz
Click "Normal web upgrade test" (bottom right hand side)
Then another window will pop up, click "Upgrade Start" button
wait a few seconds, another window "Select Country & Language" pop up,
=> Country=Republic of Korea
=> Language=English
you can click ok to proceed

7) All Done and wait for finish!

VIDEO tutorial:
https://www.youtube.com/watch?v=8muaV-mOrec&feature=youtube_gdata_player

If you changed the hosts file to use offline method previously, you'll have to open up the hosts file using notepad ran as administrator and delete the last two lines you added, save and restart your computer
 
LG Mobile Support Tool says: Your device has the latest software available from the LG Mobile Support Tool. Please visit LG Support Website for further information on updates.

Phone screen says: S/W Upgrade. Please wait while upgrading....

So I guess my question would be...is something happening or not?
 
Swainsmith82 said:
Let me know how it works out
Click to expand...

I think it worked!!!

My phone is currently booted up & scanning the SD media. I haven't see even ONE LGSystemServer error message, and that used to happen constantly when I'd reboot my phone!!!

I can also see that the icons for my apps on the SD card are messed up, meaning I'm no longer rooted & no longer have access to them. So once I'm up & running I'll re-root & modify the build prop.

It doesn't appear I lost any data either!

I CAN'T THANK YOU ENOUGH FOR THIS!!!!!!!!!!!
 
Swainsmith82 said:
This is a guide to unbricking/manually updating you're Lg Optimus L9.


I already had an idea that this is what I would have to do if I were to brick again. Luckily I have recovery installed so should anything go wrong, in almost all cases I can restore a backup. If you can't this should work.

You'll first need this file LG Mobile Support Tool,
https://db.tt/NHG4Kj9G and an Internet connection...

Install the above file on your pc and allow it to automatically update. Once the application opens you can choose to allow it to check for phone updates upon reboot of your pc or you can skip it.

In the top left corner of the application you'll see a button that says install driver. Click the button and find your carrier and phone model. Under the phone model option you'll probably see three options (definitely so if on metro) for your phone. I chose the first option (unsure if it matters but it's what I did). After installation of the drivers you'll need to connect your phone and enter s/w upgrade mode. You can do this by removing the battery and replacing it and then press and hold volume(+) while connecting the charger already attached to the pc. Allow the tool to establish a connection with the phone. If it doesn't establish a connection while already in s/w mode, remove the battery again power back on the device (even if in bootloop) and allow it to establish this way. Once connection is finally established it should then say upgrade available. Select start upgrade and follow the simple step by step instructions on the application. It will download the firmware then install it on its own. This is about a thirty minute process so just be patient. At the end of the process your phone should reboot and be functioning again. You will lose root and restore bloatware, but shouldn't lose data (unless you tried to hard reset to restore prior to). I have one report of this taking a few tries before success. Not sure if the user was doing something wrong or if it just didn't go through until the third try.

If you are already on the latest version of your model it might not show the option for 'start upgrade'. If this happens select the setting under 'options' of the support tool 'upgrade recovery' with the phone still connected. It should force the process and do the upgrade even though.

This tool is also useful if you can't update ota because of root. If you choose to update this way, again you will lose root and restore bloatware, but you won't lose any other data. Just connect the phone to your pc and under phone settings/pc connection choose LG Software. Install the drivers same as above. Once you start the upgrade process at a certain point the tool will automatically boot your phone into s/w upgrade mode. If you have modified the apps to sd in the build prop you won't be able to access those apps that are on sd. You'll need re-root and re-add the lines found here,
http://androidforums.com/optimus-l9-all-things-root/785386-apps-sd.html and once you do this the apps you had moved to sd will then become available again after reboot.

Again I have recovery installed and am not bricked so feedback is greatly appreciated to confirm this as working or not.

I hope that this helps for everyone to unbrick and/or manually update. If you find this useful please hit thanks. These tutorials don't write themselves and it let's me know how useful I am to you folks. Thanks and good luck!!
Click to expand...

i downloaded the link but i can not get the app to work, when i click the icon a pop up says the uprgade s/w is already running
 
seems like its stuck downloading software, i let it set like this for 30-40 minuets anyone got any ides ?

Ive tried upgrade recovery and upgrade options and its the same.
 

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Tried restarting program , PC ,phone
I uninstalled lg tool installed it back .
Could be my internet , should there be a status bar while downloading ? Does that screen look correct ?

I'm just trying to get back to stock do you have a cwm back up I can restore ?
 
I tried to unbrick but lg tool keeps freezing after I conect my phone and run the first download with the phone conected. so dose the phone. the screen stops moving indicating or implying that the phone is freezing. The lg tool does not say none responsive but it just stops doing anything and it stays at 15% of something. Is this normal? what should I do leave my phone alone and see if it will work after a min. or is there something I might have forgot to do or over looked? I know this is a little vague but I have very limited time with a computer because mine crashed. Sorry, but I can use a little help on this Im not the best at this stuff
.
 
I did that as soon as security error first came up. I tryed to flash a rom with out unlocking the bootloader. I thought I unlocked it but I didnt know I needed an internet conection for that.
 
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