A number of Samsung Galaxy phones are making it to the latest build of Android. It definitely hard for Samsung to come up with such updates and they have to even go with TouchWiz UI overlay testing rather than just porting the stock Android 5.1.1 Lollipop.
For today we have the news that Android 5.1.1 Lollipop update is now available to Samsung Galaxy Grand Prime SM-G530P which is the Sprint version as available in United States.
Sprint announced Galaxy Grand Prime on July 10 and it came up with Android 5.1 Lollipop out of box. So considering that this is the first software update to Sprint Galaxy Grand Prime phone which is meant to bring stability improvements. Build date is said to be July 30, 2015.
Download Galaxy Grand Prime Android 5.1.1 Build