When kies isn't recognizing your device, you can use odin. Odin is a separate pc based software which can flash firmware to your gear.If your gear is currently running android software and you want to upgrade to tizen, you must first flash a tizen release ending with NE9. NE9 firmware has files to get you off of android and onto tizen. Once your on Tizen you can flash a newer release like the ones ending with NF1.
In order to flash Tizen,
Extract Odin zip-file
Open Odin v3.09
Put gear into download mode. (Hold power button until you see it say rebooting, then tap 5 times.)
Connect to PC with usb dock.
Wait until you get a blue sign in odin. (re-download samsung drivers if no blue sign appears)
Add the firmware file to AP / PDA (firmware files below)
Make sure re-partition is NOT ticked
Click the start button, sit back and wait a few minutes
Reboot and you'll be stock Tizen, first release. In order to upgrade Tizen you can flash the newest firmware the same way.
NE9 Tizen firmware for United kingdom
The latest Tizen release is NF1
NF1 Tizen firmware for United kingdom.
If you desire a special countries release check here
, or on sammobile.com