Root
Disclaimer: rooting your phone entails risk. You may brick it, cause it to catch fire, cause it to form the first node in the Skynet network, or otherwise render it inoperable. Please read the directions carefully to ensure that nothing unexpected happens. This rooting tool is safe for the most part, but there's never any guarantees.
For a video showing the steps to root, see Galaxy S4 Build MK2 and MJ7 root instructions - YouTube
(basically the same)
This method is confirmed working with T-Mobile and MetroPC F3 after "b" and "c" updates.
Android version 4.1.2
Software version P65910b
Android version 4.1.2
Software version MS65910c
Step 1 - setting up the USB drivers
Before you try using this rooting program, you'll need to have the USB drivers installed for your phone.
The easiest way to do this is to install LG USB Driver. LGUnitedMobileDriver_S50MAN310AP22_ML_WHQL_Ver_3.10.1.exe
If you don't have the drivers working, the root installer will hang at "waiting for device..."
Step 2 - Enable USB Debugging
The second thing you must do is to enable USB debugging on your phone. Go to "Settings", "More...", then "Developer Options".
If "Developer Options" doesn't appear, then you'll need to enable it - go to "Settings", "More", "About Phone". Scroll down so the "Build Number" is visible, then tap on that several times until developer mode is enabled.
In Developer Options, make sure "USB Debugging" is checkmarked.
Make sure Media sync (MTP) is checked
That's it for the phone.
Step 3 - Unzip the saferoot.zip
saferoot.zip
Then you need to unpack the attached ZIP file somewhere onto your PC.
You should have the following when done:
- a file called "install.bat"
- a file called "install.sh"
- a folder called "tools"
Step 4 - Root your phone
Double click on the "install.bat" to run the root. It will root and reboot your phone. Once that's done, you're rooted!
Rooting on Linux and MacOS
You'll need to have the Android Debugging Bridge (adb) installed and configured and on your path. You can test that it's ready by opening a shell (Terminal) window and typing "adb shell". If you get a shell prompt on the phone, type "exit" and you're ready to go.
Open a shell window, use "cd" to change to the directory where you unpacked the zip, and type "sh ./install.sh".
Notes
Don't try to download this onto your phone and run it from there. That won't work.
Having troubles getting adb connected? There are several possible causes and solutions.
When adb first connects to your phone, it will display a dialog box reading "Allow USB debugging?"
You may need to turn on your phone to see that. Tap on the "Always allow from this computer" checkbox to enable it, and tap "OK".
There are cases where people can't get the connection working unless they toggle the USB connection type from Camera to Media and back. Perhaps that may help getting it to work.
Source: [ROOT] Saferoot: Root for VRUEMJ7, MK2, and Android 4.3 - xda-developers
Thanks to: please thank dschach who posted the method here. and please thank the original poster k1mu from xda developers.
http://androidforums.com/metropcs-t...8-guide-unbrick-unroot-lg-optimus-f3-kdz.html
http://androidforums.com/metropcs-t.../812531-guide-lg-optimus-f3-apps-sd-card.html
___________________________
Support my work
Disclaimer: rooting your phone entails risk. You may brick it, cause it to catch fire, cause it to form the first node in the Skynet network, or otherwise render it inoperable. Please read the directions carefully to ensure that nothing unexpected happens. This rooting tool is safe for the most part, but there's never any guarantees.
For a video showing the steps to root, see Galaxy S4 Build MK2 and MJ7 root instructions - YouTube
(basically the same)
This method is confirmed working with T-Mobile and MetroPC F3 after "b" and "c" updates.
Android version 4.1.2
Software version P65910b
Android version 4.1.2
Software version MS65910c
Step 1 - setting up the USB drivers
Before you try using this rooting program, you'll need to have the USB drivers installed for your phone.
The easiest way to do this is to install LG USB Driver. LGUnitedMobileDriver_S50MAN310AP22_ML_WHQL_Ver_3.10.1.exe
If you don't have the drivers working, the root installer will hang at "waiting for device..."
Step 2 - Enable USB Debugging
The second thing you must do is to enable USB debugging on your phone. Go to "Settings", "More...", then "Developer Options".
If "Developer Options" doesn't appear, then you'll need to enable it - go to "Settings", "More", "About Phone". Scroll down so the "Build Number" is visible, then tap on that several times until developer mode is enabled.
In Developer Options, make sure "USB Debugging" is checkmarked.
Make sure Media sync (MTP) is checked
That's it for the phone.
Step 3 - Unzip the saferoot.zip
saferoot.zip
Then you need to unpack the attached ZIP file somewhere onto your PC.
You should have the following when done:
- a file called "install.bat"
- a file called "install.sh"
- a folder called "tools"
Step 4 - Root your phone
Double click on the "install.bat" to run the root. It will root and reboot your phone. Once that's done, you're rooted!
Rooting on Linux and MacOS
You'll need to have the Android Debugging Bridge (adb) installed and configured and on your path. You can test that it's ready by opening a shell (Terminal) window and typing "adb shell". If you get a shell prompt on the phone, type "exit" and you're ready to go.
Open a shell window, use "cd" to change to the directory where you unpacked the zip, and type "sh ./install.sh".
Notes
Don't try to download this onto your phone and run it from there. That won't work.
Having troubles getting adb connected? There are several possible causes and solutions.
When adb first connects to your phone, it will display a dialog box reading "Allow USB debugging?"
You may need to turn on your phone to see that. Tap on the "Always allow from this computer" checkbox to enable it, and tap "OK".
There are cases where people can't get the connection working unless they toggle the USB connection type from Camera to Media and back. Perhaps that may help getting it to work.
Source: [ROOT] Saferoot: Root for VRUEMJ7, MK2, and Android 4.3 - xda-developers
Thanks to: please thank dschach who posted the method here. and please thank the original poster k1mu from xda developers.
http://androidforums.com/metropcs-t...8-guide-unbrick-unroot-lg-optimus-f3-kdz.html
http://androidforums.com/metropcs-t.../812531-guide-lg-optimus-f3-apps-sd-card.html
___________________________
Support my work