Samsung is yet to start shipping the Galaxy S6 and S6 edge in a lot of important markets around the world, but the first firmware for these devices are already available for download.
Firmware for both the devices – SM-G920F and SM-G925F – are based on Android 5.0.2 Lollipop, and bear firmware numbers G925FXXU1AOCV and G920FXXU1AOCV. These firmware, which you can download from out firmware section, are intended for Europe and Asia.