Here are the v21. It's a patched version so please don't use it with KextsToPatch because it might not work...   For AR9485 & AR9565, Tx Rate is still limited to 11Mbps maximum...   Patched kexts: (10.13.x only) AR946X.10.13.v21.zip (AR9462 & AR9463) AR9485.10.13.v21.zip AR9565.10.13.v21.zip   Patched kexts: (10.12.x only) AR946X.10.12.v21.zip (AR9462 & AR9463) AR9485.10.12.v21.zip AR9565.10.12.v21.zip   Patched kexts: (10.11.x only) AR946X.10.11.v21.zip (AR9462 & AR9463) AR9485.10.11.v21.zip AR9565.10.11.v21.zip   Patched kexts: (10.10.x only) AR946X.10.10.v21.zip (AR9462 & AR9463) AR9485.10.10.v21.zip AR9565.10.10.v21.zip   Patched kexts: (10.9.x only) AR946X.10.9.v21.zip (AR9462 & AR9463) AR9485.10.9.v21.zip AR9565.10.9.v21.zip   ATH9KFixup: (source code only) ATH9KFixup-1.1.0.zip (Added High Sierra compatibility)