I just formatted my 9290 and now when I'm talking on the phone normally, and I open the cover to use speakerphone, the phone goes on automatic mute for some reason... how can I make it so when I open the phone its automatic speakerphone? (like it was before)

The speakerphone can be enabled and disabled through you menu options in Tel application on 92xx devices.
.
Press the Tel button just below your 92xx monitor screen and select Menu from bottom row of keyboard.
Tel> Menu> Settings> Call> Audio When Cover Open> press change> select On or Off> press Ok> Press Done