hi, i am a newbie. I did bougth a JUNSUN D100 from China in 2016 and would like to upgrade the maps now. Especially USA and West-Europe. I did downlmoad a torrent of 27gb (!!!) that seems to have all the maps (fbl) ans all the other stuff (building, dem, etc...) I took a look at a chinese video which suppose to explain how to upgrade...but it is complete uncomprehensive. my qustion; canb i upload the maps like following ; 1. connect to my pc . 2. put simply the maps from the folders on my pc to the same folders on the GPS-device...and this is it ?....or do i still have to rune the prime.exe which is on the gps devic as flashresident ? quid ?