Well no, its not changing TDMA to GSM, but the Net10 ones all run on Cingular GSM, whereas the TracFone ones were several carriers, including Cingular TDMA and I *THINK* Cingular TDMA, so obviously Cingular is still running the TDMA towers, so I dont see why a Net10 firmware couldnt be used with TDMA. But I really dont know, I'm just getting into the whole cellular hacking thing, figured I could grab a few of my old phones and mess around with it and see what I end up with.
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I found it hard, its hard to find.. oh well, whatever, nevermind.