Joined: 18 May 2011
I'm not certain about the other ones, but as for Beneath a Steel Sky, that was recently fixed, so just download the latest Development Build from here:
...and then try it out. I imagine some of the other games' issues could be fixed too.
I'm not sure about the firmware, though I've played BASS on 6.60(custom) too, as for OFW, the wololo release video for the half-byte loader shows it working with Beneath a Steel Sky specifically.