Download mode is really necessary on Samsung devices when it comes to root your device. This is how one can get inside download mode Samsung devices:
- Press Power button and select ‘Switch Off’ from the popup device options
- After 5 seconds, Hold Power + Home + Volume Down buttons at the same time
- Continue holding the three buttons until you see display changing, it will tell you to VOLUME UP
- Release three keys and just tap on the Volume Up button
- Your Samsung device will now be entering the download mode
- Afterwords, you are ready to connect it to computer