The first Samsung Galaxy Grand Prime smartphone to get the Android 5.1.1 Lollipop firmware was the Verizon's SM-G830P model. Today, the regular American flavor - the SM-G830W is also getting the update.
The Canadian users are the first to get the new firmware. It is available both OTA and via Kies and weights about 590MB. In case you are impatient for the update - you can download it by hitting the source link below and install it via Odin.
While the G530W and G530P have been granted access to the latest available Android OS, the G530F and the rare G530BP (TV) models are still waiting for the regular 5.0 Lollipop updates. Unfortunately we don't know any further details on their updates availability.