Can't update to 4.3?

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http://forums.androidcentral.com – Im getting really frustrated because I bought this amazing Samsung Galaxy note 2 but it's on Android 4.1.2 so I try to update using the update button but instead it just tells me to to check for software updates go to settings about phone then update software and its getting me annoying this phone is unlocked but still Verizon branded anyone know how to change that? Or at least any fix to the check for software updates bug fix? I have a Verizon sim but no service the sim is from the device it came with when I ordered it so I'm asking is there any way I can remove the annoying Verizon Stock stu (HowTos)