For devices that have disabled USB debugging or are stuck on "Check your phone's screen to continue," v1.3.3 includes an automated test-point reset script. It guides the user through shorting specific resistors on the motherboard (via diagrams included in the package) to force the device into MTP or Diagnostic mode.
: On your locked Samsung phone, go to the welcome screen and tap Emergency Call . Enter Test Mode : Dial *#0*# to open the hardware test menu. sam frp tool gsm sulteng v1.3.3