ihave problem with facebook app

ihave lg p500 dvice
and iwas to update facebook application in my phone from play store in installing in my phone
my phone is restarting
my phone lgp500
android 2.3.3
please help me to solve this problem
and if you have latest update from facebook.apk
ineed it
iwant to know the latest official firmware to lgp500 device
and how to install it
please help me