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[Guide]Restore to Stock "Bricked" "Unlocked" LG Optimus G f180,E97x

OP umar_fiaz

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2nd March 2014, 12:54 PM   |  #1  
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The problem starts when you unlock F180 Bootloader with "freegee":

Unlock the bootloader
:

There are 2 ways:
Method 1: Unlock the bootloader
http://www.mediafire.com/download/kz...1.2_edited.zip
Advantages:
- enough fastboot functions: Start, Power Off, Recovery mod, Restart Bootloader
- Easy on the function keys
-Cons:
- To Relock, just you have to flash KDZ

Method 2: Unlock by app
https://play.google.com/store/apps/d...gee_free&hl=en
Advantages:
- Add.
- Can be easily Relock by app.
Cons:
- Right to Recovery through app (on Stock Rom & 975).
- Loss of function fastboot that this very important function.
- When crashes, not able to Recovery by pressing hard.

It is recommended to use the first way.
on E975, E970, E97.x unlock, select KT or SKT. Because E975 and the S / K has Same bootloader unlock.

i have already faced this situation to unlock bootloader with freegee and stuck with google logo and fastboot mode

not even KDZ flash working, always result in fastboot or KDZ tool stop working. also tried different KDZ and flashing Tools

Tried "TeenyBin" ,not success but get twrp working, then flash CM10 as suggested but got this

Subsystem Crash!
------------------------------------------------------------
DemiGod Crash Handler : Subsystem Crash! : External_modem (Undefined error)

Press key to choose Dload Mode/Reboot/Fastboot.
1) Volume Up : Dload Mode.
2) Volume Down : Reboot.
3) Power : Fastboot.

------------------------------------------------------------

to solve this have to remove sim card and change baseband in TWRP using ADB
then perform a hardreset.

now the device comes in life again

but you find the device is not properly working may be sim or gprs or wifi or something else.

now have to unlock bootloader again by adb with this method

Quote:

Method 1: Unlock the bootloader
http://www.mediafire.com/download/kz...1.2_edited.zip
Advantages:
- fastboot functions: Start, Power Off, Recovery mod, Restart Bootloader
- Easy on the function
-Cons:
- To Relock, you have to flashed KDZ

after that will able to flash the stock KDZ without any problem

put device in D/W mode and flash it with appropriate official KDZ
Guide to flash KDZ
http://forum.xda-developers.com/show....php?t=2388440


have to follow the procedure because adb in recovery not able to replace the bootloader files

KDZ flash After mako bootloader unlock

step 1:
use TeenyBin http://forum.xda-developers.com/show....php?t=2249500
get twrp working, then flash CM10 for you device.

you will got this
Subsystem Crash!
------------------------------------------------------------
DemiGod Crash Handler : Subsystem Crash! : External_modem (Undefined error)

Press key to choose Dload Mode/Reboot/Fastboot.
1) Volume Up : Dload Mode.
2) Volume Down : Reboot.
3) Power : Fastboot.

------------------------------------------------------------

step 2:
to solve this have to remove sim card and change baseband in TWRP using ADB
then perform a hardreset.

to reflash the bootloader files you have to enter in CM10 or some ROM with SU or busybox;


now the device comes in life in CM10
Quote:

now the device comes in life again

but you find the device is not properly working may be sim or gprs or wifi or something else.

now have to unlock bootloader again by adb with this method

Quote:
Method 1: Unlock the bootloader
http://www.mediafire.com/download/kz...1.2_edited.zip
Advantages:
- fastboot functions: Start, Power Off, Recovery mod, Restart Bootloader
- Easy on the function
-Cons:
- To Relock, you have to flashed KDZ
after that will able to flash the stock KDZ without any problem

put device in D/W mode and flash it with appropriate official KDZ
Guide to flash KDZ
http://forum.xda-developers.com/show....php?t=2388440


have to follow the procedure because adb in recovery not able to replace the bootloader files

UNLOCk steps:

enable USB debugging
connect as MTP
follow the steps in script
Last edited by umar_fiaz; 8th April 2014 at 06:38 AM. Reason: KDZ flashing after bootloader changed to mako i.e. Nexus 4
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