Gsmromnet Odin < 1080p × HD >

Samsung Odin is a proprietary utility software developed internally by Samsung to communicate with Android devices while in "Download Mode" (or Odin Mode)

“Disconnect me,” the phone hummed. “I will let you live.” gsmromnet odin

What is GSMROM.NET?

Stuck at "setupconnection":

AP (System)

: The largest file, containing the actual Android OS and system partitions. Samsung Odin is a proprietary utility software developed

For most Samsung phones: Power off. Then press and hold Volume Down + Bixby/Power (or just Volume Down + Volume Up + Power on newer models) while connecting the USB cable to the PC.
Alternative: Power off, then press Volume Down + Home + Power (for older devices with a physical Home button).
When you see a warning screen, press Volume Up to enter Download Mode.