Software to be upgraded using new Leo Tool V 3.0.9.12 (Service Centre)
This tool does not require any Model Dll file
Technical cable to be used is Arima Technical cable SGDY0017701 (Shown in Picture below)
To install the technical cable, use the driver file available on GCSC (biz.lgservice.com)
Technical Cable ? SGDY0017701
Technical cable USB driver is available on GCSC & LG Mobiles
GX200 Software upgrade Guide