1.Download Odin HERE
2.Download install KIES IN ADDITION TO latest USB drivers HERE
3.Download ones firmware from HERE extract it
4.Make shure The idea your own phone will be 70% charged
5.Turn off the phone
6.Download mode samsung galaxy
7.Home"+"Power"+"Volume Down" buttons because of the same. Release your current buttons immediately after people consider ones warning screen like on the screenshot granted below.
8.press "Volume Up" button to confirm your action,
Mobile : Galaxy S6 :
Model -- All
Samsung | Galaxy S6 |SM-G920i| Lollipop 5.0.2 | Download
Samsung | Galaxy S6 |SM-G920F| Lollipop 5.1.1 | Download
Samsung | Galaxy S6 Edge |SM-G925F| Lollipop 5.1.1 | Download
Samsung | Galaxy S6 Edge |SM-G925i| Lollipop 5.0.2 | Download
Samsung | Galaxy S6 Edge+|SM-G928G| Lollipop 5.1.1 | Down load
Samsung | Galaxy S6 Edge+|SM-G928C| Lollipop 5.1.1 | Get
Samsung | Galaxy S6 Edge+|SM-G928F| Lollipop 5.1.1 | Get