Upgrade Samsung Galaxy S4 Edition (I9506) to Android 6.0.1 Marshmallow
Download latest firmware Android 6.0.1 Marshmallow for smartphone Samsung Galaxy S4 Edition (I9506)
The latest firmware android 6.0.1 marshmallow, starting upgrade from a PC with Windows 10/8.1/8/7/XP (this is a custom firmware for this smartphone, you install it as is).
The driver of the USB and software to update the firmware of the smartphone (run the .exe file for help on upgrading and starting the update).
Root firmware android 5.1.1 lollipop (rip from original firmware samsung galaxy s4 edition (i9506)).
Update firmware for other Samsung smartphones.