The phone will progress through the update and reboot automatically. Once the progress bar reaches 100% and says "Close", you can safely unplug the device. Common Troubleshooting Tips
Open the patched LGUP.exe from your installation folder as an Administrator.
Open the patched application on your PC. It should instantly recognize your phone and display the COM port and model number.
Download the specific patched package containing the modified LGUP.exe and the UI_Configs folder. lgup 117 patched upd
: Ensure your phone is charged to at least 50% to prevent it from shutting down mid-flash.
This indicates a connection timeout. Try switching to a USB 2.0 port instead of a USB 3.0 port, or use a different USB cable.
If you cross-flash a different region's firmware and the device bootloops afterward, boot the phone into its hardware recovery menu using the physical key combinations (usually Power + Volume Down) and perform a factory data reset to clear leftover cache files. The phone will progress through the update and
Ensure the LGUP_Common.dll file is placed inside the model/Common folder within your main installation directory. Redownload the KDZ file to verify it isn't corrupted. Safety and Disclaimer
Install the latest official LG United Mobile Driver package to ensure the PC recognizes the device in download mode.
: Keeps your app data intact (use this only if updating to a newer version of the same regional software). Open the patched application on your PC
In the section at the bottom, click the triple-dot icon ( ... ) and select your downloaded .kdz firmware package.
Using LGUP 1.17 typically follows a specific sequence to ensure the device is recognized by the PC: Driver Installation : Users must first install the LGE Mobile USB Serial Port drivers (often version 4.5.0 or later). DLL Requirements
The modified LGUP.exe file that replaces the stock file.
Use a high-quality USB-C cable connected directly to a motherboard port (avoid external USB hubs). Step-by-Step Installation and Flashing Guide Step 1: Install the Software and Patches