I patched the original kext on the fly on 10.10.1 with clover. And then did an update to 10.10.2 wihout having to repatch anything. So, i assumed what works in 10.10.1 (which exactly the same kext with 10.10) will also work in 10.10.2
Whats your cpu, smbios, and what settings in detail did you use in the patcher??