There are a number of forks compiled and available.
Due to big file size of the binaries (20-70mb each) they are not included in default installation of hive. They are downloaded automatically when you choose ccminer fork in the wallet.
If you know that there is a new compiled binary then you should run
on the rig which will check current version and a downloaded one.
Repository links for information what is what.
Good for neoscrypt
Download link for manual installation
If you have replaced the file and it says “Permission denied” then you did not set “Execute” permission to file. Open file properties and set “x” bit.