How to enter odin mode in galaxy s4 or aka Download mode ?
You can install Stock Official firmwares with Odin Mode or Download Mode manually, this Odin Mode is working with Odin Application only. If you want to upgrade your firmware like kitkat to lollipop you can easily done with Odin Mode. First you have to install latest odin application in your pc. This Odin Mode process down below is working with any s4 devices.
This is very simple not very confusing just follow these steps :
1. Turn off your device.
2. once your device is off press ‘power button’+ ‘home button’ and ‘volume down’ button together and hold .
3. then you will see the warning screen and release the buttons.
4. then press “volume up” for continue.
5. after pressing the volume up button you will enter in the “odin mode” or “download mode” .
These are the simple steps to enter your device in Odin Mode or Download Mode..