I have personally tried this method on my LG Optimus VU 2 F200L, it does work without any problem.

What you will need:

• LG Optimus Vu 2 usb driver: https://www.box.com/s/37my2qa61xygpcs2qcnu
• KDZ_FW_UPD_EN.zip: https://www.box.com/s/78mnd1hg7hnvi6wqjpt3
• Stock F200L ROM: http://www.lg-phones.org/official-lg-optimus-vu-2-f200l-firmware-download.html
• Stock F200K ROM: http://www.lg-phones.org/stock-lg-optimus-vu-2-f200k-firmware-download.html

How to Flash LG Optimus Vu 2 F200 Steps:

1. Download and install the usb driver on your PC
2. Download the KDZ Updater Tool and the kdz firmware
3. Reboot your phone to download mode by holding “volume up” and “volume down”
4. Connect your phone (Use the USB ports on the back of your computer)
5. Run KDZ_FW_UPD.exe
6. Select 3GQCT for type and DIAG for phone mode
7. Browse to the KDZ file you are flashing
8. Press "Launch Software Update"
9. The process will cost you about 10-15 minutes. Just wait and enjoy the flash. Good luck!

LG Optimus Vu 2 Phone Photos - LG Cell Phone Pictures

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