You mean this tool https://www.zeusbtc.com/RepairDetails.asp?ID=236  i guess.

Well, this is only useful if you have working hash boards that are taken from different miners and then assembled together, in some cases they won't be compatible and the miner won't start, it will show you some words in Chinese in the miner status page, but this only happens if you mix boards, other than that, you don't need it.