There are some unofficial LoD maps going by the number v6a & v6b around, made by a guy named ‘Konsong’. They don’t have any changes, all the dude did was changing Lordshinjo’s name into his own.
LoD v6a & v6b “by” Konsong are fake maps. He didn’t bother changing anything except for the developer name.
We recommend leaving those maps untouched and download the official ones directly from Dota 6.74c lod v5c