I have just found out that there is a firmware about the altitude Hold. I have download the Firmware from this http://forum.bitcraze.se/viewtopic.php?f=5&t=721 (Crazyflie_2013.11-beta1.bin) but i confuse my self that where to put this firmware in which file? I'm currently run on bitcraze VM0.4. Furthermore, Do i need to download the (cfclient-2013.11-beta1.tar.gz) as well?. Im currently use the latest firmware and client now
I just wonder that in the cfclient there is a attitude control option under the basic flight control how to use that option?
Ps. I currently a noob so I apologies for making stupid question

Thankyou