The key is HAA (same as my old bora was) and the fob itsself has 433MHz 5FA 007680.
I do have a working spare but its just a normal key (no remote locking)
That's good. Yours has exactly the same key as mine did.
What you need to do is buy a flip key off ebay, ideally one with a blank blade. Just watch out whcih one you are buying. You need the one with part number 1J0 959 753 N. Don't buy one with number 1J0 959 753 CT - It won't work with your car. I should know, I bought one and couldn't get it to work.
What you need to do is split open your spare key and take out the transponder. It's a tiny glass capsule inside. It's glued in and is a b*tch to get out, just take your time. Then you need to put it inside your flip key, get the blade cut (not easy), and program it to your car (dead easy).
Hope this helps.