Q: Why did my iPad2 get Siri on the first update of ios6. But my friends iPad2's did not get siri?

Siri is NOT compatible with the iPad 2.

Then you either have a hacked iPad or a model newer than an iPad 2.

iPad 2 cannot have siir. If you are usre its an iPad 2 then its either jailbroken or its a differnet App that can wpork like Siri.

If nopt you likely have an iPad 3. They are identical in terms of looks so its easy to get confused.

But yes the iPad 2 cannot support Siri in any way.

You can confirm what model of iPad you really have via this information:

http://support.apple.com/kb/HT5452

Regards.

i also had siri with the first update to ios6 on my ipad 2 but it has now gone...

give it back

and no my ipad2 isn't hacked....

No you didn't. And you can't have back what you never had.