I would just like to add, if you're thinking about downgrading, the update that removed Red Pill was PR1.1 (2.2009.51-1). That same update also updated the phone modem, and people who attempted to revert to PR1.0.1 (1.2009.44-1) or PR1.0 (1.2009.42-11) found that the N900 would no longer recognize any SIM cards. The easiest way to use "red pill functions" is via the terminal with the appropriate commands.