Download Mode Jig For Samsung
– Turn off your phone and pull out the battery for 2 seconds.
– Put the battery back in the device and don’t turn it on.
– Plug the jig into the micro USB port on the phone.
– After about few seconds, your phone should boot up automatically and bring you straight into download mode.
– Unplug the jig.
– Connect your phone with USB cable to the computer and then flash your phone via Odin.