"To reboot the series" means to start the series again, usually with new storylines or characters, in order to refresh or revive the franchise. Full definition
I'm sure that this is but the first adventure in Lara's newest reboot series. (jamiex66.com)
Then Intelligent Systems rebooted the series with Advance Wars Day of Ruin. (gamemusic4all.com)
Another benefit of rebooting this series is, if it does well, it could spur other Pokemon side games to come back (better than ever). (bitcultures.com)