[LG Optimus L3 II, L5 II, L7 II, L9 II] allison.b.mat:
[Solved] Guide to solve this kind of problem

After looking for a while on how to fix the problem either by trying to run an ADB shell as root either by flashin the ROM, I could figure another way to flash the original "TIM" rom for my phone instead of the one described on the topic "[Tutorial] Flashing KDZ on LG L5 II (E455/E460) and other LG phones". Here's the way out:

1. Downloading firmware KDZ Flash ROM

First, you have to download the original KDZ ROM for your phone. It can be found at the link below:

LG Optimus L5 II Firmware List

The ones for Brazilian users are described in the page. For TIM users, I suggest using firmware 33 BTM/TIM(BRAZIL), size 599.09 MiB.

Since my phone was sold by TIM, I can't tell about another mobile operators, like Claro, Oi, and VIVO.

2. Extracting a binary file from the KDZ Flash ROM

After that, you will need to extract the KDZ file using LGExtractor (and not DZExtractor).

You can download it from here as an autoextractor file: <4shared>. It will extract itself to C:\RecoverE455\Extract.

Put your KDZ file on an easy access folder. I will assume you will use C:\RecoverE455\ROM for this.

Launch an Administrator command line prompt, and run this command:

C:\RecoverE455\Extract\LGExtractor -kdz C:\RecoverE455\ROM\<KDZ-ROM-FileName>.kdz

Again, I assume you will put evertything under C:\RecoverE455.

Now, you have a cabinet (CAB) file in the same folder of your KDZ ROM. Extract it directly and you will get some structure similar to this:

DLL (folder)

LGE... (binary rom)

LGUP... (dll file)

3. Getting a most recent version of LGFlashTool

After this procedure, you will have to download LGFlashTool in order to flash you newly extracted BINARY rom.

You can download it from here as an autoextractor file: <4shared>. It will extract itself to C:\RecoverE455\Flasher.

Run the Setup program attached within it and it will install itself under the folder C:\LG\LGFlashTool. Overwrite the file MegaLock.dll under this folder with the one you just extracted in C:\RecoverE455\Flasher.

4. Install the correct LG Support Drivers for your E455 phone

Instead of installing the most recent version of LG Drivers provided by LG, you will install the following ones:

LG United Mobile Driver 3.8.1

LG Windows Mobile 1.0

LG SmartPhone DUN Modem Driver 1.0

They are packaged and you can download them from here as an autoextractor file: <4shared>. It will extract itself to C:\RecoverE455\Drivers. Install them in the order described above then restart your computer.

5. Put your phone under Download Mode

To do this, turn off your phone either directly either removing and reinserting the battery.

Plug the phone - WHILE TURNED OFF - on your computer by the USB cable.

Hold (Vol Up) + (Vol Down) and turn on the phone. Keep holding (Vol Up) + (Vol Down) until you see the line "==>Download mode" in bottom of the screen. If it doesn't appear, try until you get this.

6. Configuring your computer to flash under USB download mode

After plugging your device under Download Mode, open Windows Device Manager and search for some LGE AndroidNet USB Serial Port (COM##):

If it is not (COM41), you must set it to port (COM41). Set properties of the serial port, select tab "Port Settings", then click "Advanced":

Here, select (COM41) for COM number port.

7. Launch LGFlashTool and flashing

Open your newly modified LGFlashTool (yes, the one you downloaded here and replaced some DLL). It immediately will ask for your BINARY rom and a DLL:

Click the "..." button and select the LGUP***.DLL in the same folder as your .BIN file you extracted in step 2.

Click the "Add" button immediately below (side S/W box), then select the LGE***.BIN you extracted in step 2.

Click OK.

Click the serial port button ----, and let this dialog be equal as this one, with only "16 ports\Port 1 ~ Port 16\1" marked:

And now click the forward button --.

It will display READY on box with port COM41.

Disconnect your phone, turn it off, then turn it on under Download Mode as described on step 5.

If you manage to turn it on Download Mode without connecting to your computer, plug it back to the computer.

It will begin flashing by itself. No action needed.

DO NOT DISCONNECT YOUR PHONE. I DON'T KNOW WHAT MAY HAPPEN IF YOU DO SO, BUT PROBABLY YOU WILL BREAK DEFINITIVELY YOUR DEVICE.

After all, your phone will restart with all its original configuration and LGFlashTool will display an error. After you manage to finish LGSetupWizard on the phone, you may close everything.