Remove SIM-lock patch generator

[riders4sia]

Hi,

I'm new here.I have a W810i with DB2010 CID49 platform and R4dd001 Firmware.
I got a problem to generate the patch with the Simlockpatchgenv2.1.When I click on the 3 dot button a window pops up and ask the location of the firmware.My question is where does the firmware locate? In the phone or I have to download it from somewhere.I know someone may have already asked the same question,but I can't find the answer.Can someone direct me to the right track? Thanks in advance

first, you need to know your phone firmware. download setool2lite and see the identify log after done, download the MAIN firmware in the download area