[Elecraft] KX2: Sub 100mw power setting?

[Luke]

Would it be possible to configure the KX2 through a firmware update to transmit at power levels below the 100mw low limit? If the PA is capable of being stepped down that low I'm interested in experimenting with very low power transmissions and it would be convenient if I could access levels somewhere in the range of 50mw to 5mw without the need for an external attenuator. 
Thanks!
LukeAD0KI