Samsung Galaxy S4 LTE-A GT-I9506
  • Power off the phone
  • Press and hold Volume Down (Yellow) + Home Button (Red) + Power On (Blue)
  • When phone power on confirm to enter Download Mode by pressing Volume up button
Samsung Galaxy S4 LTE-A GT-I9506 Download Mode
Samsung Galaxy S4 LTE-A GT-I9506 Download Mode
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