The real credit goes to Carloswii5 for the original guide here: http://forum.xda-developers.com/show....php?t=2277639
He's done some amazing work so if this updated guide works for you head on over there and thank him, "pinoyto", "Lelus", and "cmahendra"
This truly wouldn't be possible without them.
From this point on I'm literally going to copy/paste Carloswii5's guide and just add in the mission critical things that I figured out were necessary to unlock the bootloader. I have tried it about 35 times and it wasnt until I added these steps in conjunction that it worked on my MS769
Any edits i make will be highlighted in red so if carlos wants to add these into his guide we can delete mine.
"Ok So Here Is The Link Might Say Still Uploading Depending The Time Your Reading I Will Post The Files I Use Tomorrow And Remember A Thumbs Up Both Here And On The Video Would Be Appreciated (; Good Luck (:
V20B Root Bin
Files That Go On SD Card
USB Driver And Text File Describing Locations
Wasn't Able To Upload Can Anyone Help Me out with this one? still struggling with internet problems...
All The Files In One Zip
Thank You ggfool
Warning Just to let you know that this will Void your warranty you should already know that ￼
Also this may look really long but its short just somewhat really specific ￼
Hello Fellow Optimus L9 Users today I Bring you a tutorial on how to unlock bootloader the noob version for those who are new to rooting and stuff because there is another one that is more complicated and less specific but if you want to check it out heres
Okay First to let you know that when you flash V20B_00.kdz the screen will get kind
of funky everything will be inverted and backwards so dont worry. And one more thing is
that when you boot up every single time after doing this the boot will be mirrored. Just
to let you know.
First Just want to thank "pinoyto" "Lelus" and "cmahendra"
Okay Now to Start Download the zip containing the files link here Link dead Files contained
in the zip are "Adb" "Recovery image" "V6.bin" and "V20_00.bin"
After youve downloaded extract the files to a folder for later use.
If you are already running Jellybean go ahead and download the V10g tmobile KDZ. https://mega.co.nz/#!dRUTkICD!BncpLz...dIsjIFhkjs5PYgYou're going to need to flash to this then flash to V20B Europe Open
Now before we go to flash the V20.kdz Or V10.kdzenable "usb debugging"
. Use the Guide provided below to flash to V10G don't worry so much about root during this flash because you're going to root the next flash. After you downgrade you may have to factory reset in order to boot. This is accomplished by holding the volume down and home buttons, then while still holding them down press the power button for 3 full seconds and release while still holding the vol- and home button until the android comes on the screen signaling that you have successfully done this step.
Boot into V10.
Quickly go through the setup. and put the folder named Files that Go On SD Card on the SD card.
Very Important--->>> DISABLE YOUR LOCK PATTERN!! I cant stress this part enough!! I also disabled screen timeout and enabled "show touches " and "install from unknown sources" from the developer and security menu respectively.
If you haven't already moved the RootLelusJB folder to the root of your C drive do it now. Connect the phone to the computer and run the rootL9 batch file.
Now go flash the kdz with this tutorialhttp://forum.xda-developers.com/show...php?p=36351786 Make sure you root the phone by replacing the 11.bin
When you boot into V20B the lg logo should be backward and blue. If it is not then start over from V10G.
1)Now after you've flashed then comes the screen problem just unlock and go through the setup quickly
2) Connect your usb and make sure the usb debbuging icon pop-ups the little spider looking thing if thats enabled good
3) Okay next im not really sure if its needed but just do it change the usb
entrance to "LG Software Mode" to do this the simple way you need to disconnect usb and
connect again after than the options appear what type of usb entrance click on the back arrow
and it should select the "LG Software Mode"
Here is the most important part, you need an internet connection for the next step but not just any internet connection but a valid mobile data connection. you can connect to wifi also but you need mobile data so an unactivated sim will not work. if root was succesful you will be able to access the sd card from the file manager and install L9RecoveryInstaller_1.5.0.apk. After you install it, open it and install recovery, then boot into recovery. (this will be tricky due to the fudged up touch screen) when the phone boots to recovery use a mirror to see the words because it will be mirrored. Use the Volume Up/Down keys to navigate and Power button to select the options. first select "install zip", then "choose zip from /external_sd" then find "radio.zip" select it and install it. This will give you the cellular data signal necessary for the next part.
4) Now we want to connect to the WiFi THIS IS NECESSARY FOR IT TO WORK go and connect to it
after that make sure you are connected by opening the browser or youtube and if a page or
video loads your set now go make yourself a coffee or some thing because now you have to wait
30 or more minutes
5) Ok now that the 30 minutes or more have passed you need to go to the downloaded files and move
the "Android" folder to your "C:\" drive "dont worry just has adb files" now open a command prompt and
type the following
"adb devices" to make sure your phone is connected a list of numbers should appear
"adb reboot oem-unlock" and your phone should then reboot
then the lg logo will appear then a mirrored confirmation to unlock bootloader just press
the "Volume Up" button and it will confirm it skip the power button if you want to try the process below then hold the power button until it reboots
I skipped steps 6-8 by already having the ROM i wanted to flash on my sd card...
First i flashed the recovery through command prompt with "cd [directory with fastboot in it on your computer]" then "fastboot flash recovery [filename of the recovery image]" the recovery image needs to be in the same directory on your computer as fastboot. Then i entered "fastboot reboot recovery"
I recovery flashed the ROM then recovery flashed cwm_ts_fix_p769.zip that we put there earlier and did a factory wipe and Dalvik cache wipe then rebooted.
6) Now we need to go to "rooted 10g" again just go here http://forum.xda-developers.com/show....php?t=2173465
and follow every single instruction but when you are about to enter the flashing process instead
of "Emergency" mode you need to put it to "Diag" mode and then start the flashing process
7) After you are done with that you cant boot so you must perform a wipe and the way of doing that
is too have phone off hold "Power button + Volume Down + Home Button" then you should see
a android with the little globe and a loading bar after its done it will turn off then
now reboot and after it boot it will be mirrored you can fix that but in my opinion it is a little more confusing
because the screen is still messed up the whole left side is inverted with the right side but if you still want to remove the mirror
you must press the power button once to turn off screen then again to turn on and it will be fixed but the touch is still inverted
8) Now go through setup and enable usb debugging and then u need to go to the superuser app
and if you dont have it you did not do the root process correctly go to it again "and if you need help just pm me"
open the app and update the binary after that go to your computer and open command promt again
and enter the following commands but before you must put the v6.bin file to your external sd card it is in the downloaded files after you have put it to the root
of your external sd card enter the following commands
"su" when you enter this go to your phone and accept the su request
"cat /sdcard/external_sd/v6.bin > /sys/devices/virtual/input/lge_touch/firmware"
after you entered the last command you need to close that command promt and open
another one and type the following commands
"reboot" then it will reboot and the touch will corectly work remember the mirrored problem will continue
to occur on your phone like i said just turn off screen then turn it on and it will be fixed
Now you have unlocked bootloader ￼
If you want to install the cm10 rom the optimus L9 has as of right now you
have to do the following
1) Go to the app store and search for the app called "Nandroid Manager ROOT"
download the app and open it then go to flash recovery you must first put the recovery from the downloaded file to the
root of you external sd card and then go to the app and search for the recovery and flash it.
After you flash it you will have a recovery on your phone
(just to let you know it will be mirrored) but to boot to recovery you must turn off the phone
and then hold the "Volume UP + Home Button + Power Button"
now go download the cm10 rom from here " http://forum.xda-developers.com/show....php?t=2216542 " put the file to the root of your sd card and then reboot to recovery and then to flash you will need to "wipe system, wipe cache, and wipe dalvik cache then flash" after you flash the zip reboot and you will have CM10 Hope This helped
-Credits to geeshiet for still having a copy of my guide Thank You geeshiet"
Well there you go! as you can tell from the fact that there's not that much red writing that I don't deserve credit for this guide. I just added the parts that I found were missing to get it to go off flawlessly. Give Thanks Where Thanks Are Due!!