1.5 or 2.1?

[trizzypballr]

Just bought my eris 2-3 days ago off craigslist. Im new to Droids, how do I tell if I have 1.5 or 2.1 software?

 

[Danorexic]

If it's like my Droid:
From your home screen, hit menu, Settings, about phone.
That should give you all of your version information.