After sevaral hours, finally got FW1.1.1 working with TSIM. I was previously on TSIm+unlocked iphone (i.e. no change in baseband). Activation and all works if everything is followed as in Dev wiki. Calls in and out, SMS etc all OK, but YouTube is not working. Havnet attempted previous youtube hack yet.
iTunes store is great on iPhone - especially to preview tracks/albums before buying.