I encountered problems with downloading these 2 files:
G_T_SK3_C.rar :: DataPort.cz - Sdílej sv?j sv?t Cicklo
G_T_SK3_S.rar :: DataPort.cz - Sdílej sv?j sv?t Standard

However, I managed to download the dlc TopoSK3.zip (2 KB) file (file name: 7bc506f1b49808e2d4be6bb663e85b77.dlc) & I need help on dealing with dlc file, are there any tutorial for "dlc file", please?

I am using Garmin nuvi 255w. Thanks