Here you can download the LGUP DLL for the LG K51 smartphone.
The DLL is Version 126.96.36.199. and it is provided by LG officials.
The DLL is used for LGUP to detect the model number and current software version of your LG K51 smartphone.
Download LGUP DLL for LG K51
How to install LGUP DLL for LG K51
Step 1, Rename LGUP-K51[Ver. 188.8.131.52].dll into the LGUP_common.dll
Step 2, Put the LGUP_common.dll into the folder: C:\Program Files (x86)\LG Electronics\LGUP\model\Common
Step 3, Connect your phone to PC and run the LGUP.exe
Metro By T-mobile LG K51 owners, You can download the LG K51 stock firmware K500MM10E via this link.
You may use LG UP Version 1.1.6 to unbrick/restore your LG K51 back to stock.
To unbrick LG K51 with LGUP, You need to download and install:
The uppercut.exe provided by the XDA developer may cause an “unknown model” issue or “kdz is invalid” issue.
kdz is invalid issue when trying to flash the LG K51 firmware with LGUP and uppercut.exe? please try LGUP-K51[Ver. 184.108.40.206].dll