I'm using version 1.2, don't know if it's the latest...
The craziest thing is that it all worked well, I was able to use BNF to check everything that I wanted. I've probably installed something or deleted something by accident. This is the output from x-term after trying to start BNF.
~ $ root


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso31+0cssu0) built-in shell (ash)
Enter 'help' for a list of built-in commands.

Nokia-N900:~# bnf
cat: read error: No data available
cat: read error: No data available
cat: read error: No data available
/usr/sbin/bnf-bq27x00: line 21: syntax error: / 1000
Nokia-N900:~#

If you guys can't figure it out, no problemo...I'll just flash it and start from scratch when I find some spare time.