[TUTORIAL] Keep ROOT when updating the firmware to a newer version for LG L7/L5 - Optimus L3, L5, L7 Android Development

How to keep root when updating firmware using KDZ stock
Download:
Root update
Requirements:
Already ROOT LG L7 with soft (can be from Homero http://d-h.st/ZIAOnly LG L7 Thanks Homero for his Work) V20A with root and CWM or else)
ADB drivers installed.
Busybox installed on your phone (you can use the installer busybox)
Do not accidentally Factory Reset between step 1 and step 3
1
Make sure you have USB debugging enabled (Settings> Developer options)
Connect your phone to your computer.
Run step0.bat, the phone will appear with root privileges, accept of course
Now run the file step1.bat, this file:
- Creates a folder / data / rootkit
- Copy busybox to / data / rootkit
- Copy su to / system / xbin to / data / rootkit
- Copy Superuser.apk to / system / app to / data / rootkit
- Gives the correct permissions for these files
2
Update your firmware to the selected version You want
DO NOT FACTORY RESET! LOSE BECAUSE THEN / data / rootkit. First, follow step 3!
3
After updating the phone is switched off.
Connect the USB cable, hold the keys volumeUp + Home + Power, release the power switch on lg logo buttons hold the rest until you hear a sound in the PC and you'll see a window Recovery Mode.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Now run step3.bat that:
- Mount the system as r / w
- Copy su to / system / xbin /
- Copy superuser to / system / app /
- Gives the correct permissions for these files
4
You can hold down the POWER to restart the phone, or run step4.bat that he will reboot the phone.
Make sure that the root work and make Factory Reset, depending on the version of firmware
KDZ UPDATER:
Kdz Marwin
RECOVERY 6.0.3.2 AND UNLOCKED BOOTLOADER for LG L7
Recovery and bootloader
SUPERUSER 1.25:
Superuser cwm flashable
Tutorial also works for LG L5 but of course the firmware files to find yourself in the post since these are the LG L7
RECOVERY 6.0.2.8 non touch AND UNLOCKED BOOTLOADER for LG L5
L5 recovery and bootloader
Link for my work in Polish forum
http://forum.android.com.pl/f759/za...aktualizacji-softu-na-nowszae-wersjae-300923/