Windows 10 users should additionally go to c:\Windows\inf and search file "wpdmtp.inf" press right button on it and select INSTALL.
Unlock Bootloader procedure on the phone will erase all of your data.
All described operations you are doing at your own risk.
If want saves your data do a backup before start.
The battery should be at least 50% charged before the start.
Manual How to Unlock Bootloader in LG Fortune M153 with Android OS.
Turn on LG Fortune M153 by the Power button and wait until you do not see the main screen.
Go to settings menu and turn on USB debugging and OEM lock in the developer options.
Connect USB cable to phone
The phone will ask what connect option you prefer or need swipe finger to open notification option and tap there, connection option and need select Charging mode.
The computer will install all needed drivers and on end ask about ADB USB debugging connection allow.
Check always allow from this computer and then press OK button to confirm.
Next open Command Prompt from start menu with admin rights(tap on the application, press the right button on mouse/touchpad and select Run as Administrator).
In Command Prompt go to C:\ADB directory and then use next command:
adb devices and press enter key - to check communication with the phone(this will only work if you allow ADB USB debugging before on phone screen). The phone will answer with a serial number in a command line if all is ok installed and connected. C:\ADB> adb devices List of devices attached LGMS55010ca1cf1 device
adb reboot bootloader and press enter key - the phone will reboot to bootloader to can unlock a bootloader.
fastbootoem unlock and tap enter key - to unlock the bootloader in LG Fortune M153.
When wiping data end, disconnect the phone from cable and remove the battery from it, insert the battery back and turn on the phone by the Power button(if can't remove the battery just hold the Volume down and the Power button until phone reboot).
Awesome you unlocked bootloader your LG Fortune M153 without problem. Great work.