I have the same problem .. i also added program_board_rev=2 to my config.txt but it still not works
the strange thing is that i can read 3-4 seconds (pir sensor) before this error appears:
piBoardRev: Unable to determine board revision from /proc/cpuinfo
-> Unable to open /proc/cpuinfo
-> You may want to check:
-> http://www.raspberrypi.org/phpBB3/viewt ... 10#p184410
here my cpuinfo:
processor : 0
model name : ARMv6-compatible processor rev 7 (v6l)
Features : swp half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7
Hardware : BCM2708
Revision : 000e
Serial : 00000000ebf39724