An integrated circuit (“IC”) including a configurable configuration controller and associated IC boot program product is disclosed. One embodiment of the present invention provides an IC boot program product including IC boot code for configuring a configuration controller of an IC such that an updated programming file can be read out of the configuration memory prior to loading an initial default programming file from the configuration memory into configuration elements of the IC. Another embodiment of the present invention provides an IC boot program product including IC boot code for configuring a configuration controller of an IC in accordance with a particular configuration memory interface selected from a plurality of such interfaces. Another embodiment of the present invention provides a method for reading configuration memory device information in a first read mode and then reading a programming file from the configuration memory device in a second read mode. Another embodiment of the invention provides an IC including a configurable configuration controller adapted to be configured by IC boot code read from a configuration memory device.