Yeah if your using the WHR-HP-G54, you don't need to do anything with the firmware power output as it has a built in wireless amp in it. Provides a much cleaner, stronger signal going through that than ramping up the output power and just sending out a bunch of noise in it. Just because the power output is high, doesn't mean the signal is better, just is more noisier. An amp actually provides stronger, cleaner signal and lower noise.