Apple Releases OS X 10.10.3 Supplemental Update To Fix A Bug In Startup. by Jeremiah Sarpong | Apr 16, 2015 | General | 0 comments Apple this morning released OS X 10.10.3 supplemental update to fix a startup issue. The OS X Yosemite 10.10.3 supplemental Update fixes a video driver issue that may prevent your Mac from starting up when running certain apps that capture video. Get the update from the Mac App Store. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.