No; you don't need to burn a CD unless you are planning on upgrading your HD. If you just want to flash the bios:
1. Confirm you chip is installed correctly
2. Hook your box up to your router. Assuming it can accept dynamic addresses, you should see your ip on the from SmartXX OS screen.
3. In browser http://XXX.XXX.XX.XX
(ip of your box)
4. Choose flash bios. You'll want to use M8 16, either standard or Plus if you plan on upgrading your HD to larger than 137 GB.
Look for the tutorial elsewhere in this forum (post-install tutorial I believe it's called) very easy to follow.