Latest Samsung YP-GS1 (YP-GS1) - XAC firmware
Samsung YP-GS1 (YP-GS1) firmware for Canada (XAC): 1 build in the SamMobile archive, newest first. The latest is GS1UELB5 (Android 2.3.6, built 14 February 2012). Open a build to download it, or switch region with the country selector.