I have a 2011 MBP that I use as a studio computer, with it I use an archaic Mbox2 Pro soundcard with Firewire. The drivers for the soundcard are compatible with Mavericks 10.9.4 (the one in App store is version 10.9.5, which produce some irregular behavior). The OSX version I've used until now is the latest version of Mountain Lion, so I'd like to upgrade.
Is there any way of downloading an older version of Mavericks (for example 10.9.1) and then use the combo update packages available at the developer site?