I’m using server with centos and i need to get the update history/log of asterisk. Is there any way i can do this?
Howdy! Welcome to the forums!
Are you looking for the log files ?
Try logging in to your system, then at the shell prompt type:
cd /var/log/asterisk
Then either:
less full
Or, depending on your preference:
more full
Yum! 
Lots of information on the docs site about this:
And if you meant the change log updates then please consider some of the “Full ChangeLog” links on the Releases page of the Asterisk repository on GitHub: