Samsung Galaxy Note 3 can be updated to the latest official KSUBMI8 Android4.3 Jelly Bean update. You can update your Note 3 SK Telecom N900S via OTA or KIES officially. In case you can't see the update or have a rooted Note 3, follow this tutorial to update to this latest stock firmware manually.

Prerequisites to update Galaxy Note 3 to KSUBMI8 Android 4.3 official:

Downloadand install USB drivers for Galaxy Note 3 in your computer or you should have KIES on your computer.Make sure to takebackupof any important files on your Note.Enable USB debugging option by pressingMenu>Settings>Applications. Navigateand tap onDeveloper Optionsto ensure thatUSB Debuggingis enabled.Ensure that your Samsung Galaxy Note 3 carries more than 70% of charge.

How to update Galaxy Note 3 to KSUBMI8 Android 4.3 Jelly Bean:

Required files: download the stock firmware file from this link.Unzip on your computer.Also download theOdin3 v3.04 for installation fromhere.

Unzip and install Odin on your PC.Switch your Samsung Galaxy Note 3 SM-N900Sdoff and boot it inDownloadmode: press and holdVolume Down, PowerandHomebuttons simultaneously.Once successfully connected, you will get a message in Odin sayingAdded!!.(In case you don’t get it, try another USB port. If that doesn't help either, then re-install USB drivers).In Odin make sure that theAuto RebootandF. Reset Timecheck boxes are the only options checked and nothing else is.Click onPDAon Odin,locate the .tar.md5file and hit Startbutton to initiate the update process.Wait for your Note 3 to get updated. When firmware installation is successfully completed, OdinID:COMwill turn green and Odin will show you aPASSmessage.Samsung Galaxy Note 3 will restart automatically and you can then disconnect your device from computer.

That's it. You can verify that your Samsung Galaxy Note 3 has been successfully updated to KSUBMI8 Android 4.3 JB viaSettings> Device.