A lot of people have been having the exact same problem, I'm sorry but I don't know what the answer is though, except to keep trying, good luck.
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had a card for almost 2 weeks now with 20 bucks on it , hasn't been working for me either
Error 800231002 , its causing a lot of problems from my understanding , alas i hope Sony fixes the problem soon.
Since thats 20 bucks for a plastic stick right now..