Too long to put in a comment...
asterisk?? Answering without knowing anything about that FW. I'd say no, since although H.264 and HEVC share a large set of functions they are fundamentally different. In H.264 the fundamental area to operate on is the macroblock. The MB concept doesn't exist anylonger in HEVC.
Then again, it's software and anything is possible but the workload here is just humongous...