Flashing LG Optimus One back to Original Firmware

Preparation

  • Install driver LG P500, you can find it at LG official homepage or download below
    After install the driver restart you PC/Laptop then go to Control Panel -> System -> Hardware -> Device Manager -> Modems -> Right click LGE Virtual Modem, choose Disable.
  • KDZ Updater, we`ll need it for flashing firmware. download and extract kdzupdater and install the msxml.msi
  • LG Optimus One Firmware that suitable with your region (in this tutorial, using firmware v10c singapore region)

Note: It`s better idea to close similiar application, such as KIES, ovi suite, BB desktop manager

How to Flashing LG Optimus One back to Original Firmware

  1. Turn off your cellphone
  2. Press and hold Volume[+] + Power + Back buttons, until your Optimus boot in emergency mode
  3. Connect LG Optimus One to PC (via USB)
    tips: maybe it`s a little strange to do, but you can try to shake the phone if it can`t detect.
  4. Run KDZ_FW_UPD.exe
  5. Select Type : 3GQCT
  6. Select PhoneMode : DIAG
    tips: if this option failed try EMERGENCY or CS_EMERGENCY
  7. At KDZ Files section, select firmware that you already download
  8. Click launch software update button
    tips: someone say that it`s good idea to shake your optimus one with gently to avoid stuck.
  9. Wait until it`s done, unplug the usb cable
  10. Press and hold Volume[-] + HOME + Power buttons
  11. See the firmware version, congratulation you did it

Do With Your Own Risk

Download Support Files

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