Subject: Analysis of the 117 Patched DLL and LGUP Execution
Classification: Community Tool / Engineering Leak
If you get a “Model mismatch” error even with the patched DLL, check the box “Force Flash” (available only in the patched GUI) before hitting Start.
Launch LGUP as administrator.
Verify device detection:
Select the KDZ file:
Choose a process:
Click "Start" and wait 5–15 minutes. The device will reboot automatically when finished.
LGUP 117 Patched UPD is a modified version of LG’s official LGUP flashing tool (version 1.17). It removes signature checks, model verification, and other stock restrictions, allowing users to flash cross-model firmware, downgrade to older software versions, or write partitions not normally accessible via retail LGUP.
Unlike the stock LGUP which hides crucial partitions, the patched version provides access to: