A friend of mine upgraded a while ago to 6.60, but he can't downgrade to 6.20 anymore. Everytime he tries to run the downgrader he gets this error: "A later version of the system software is already installed. There is no need to update. (CAAFFFFFCF7)" It's a 3000 3g, so he can downgrade to less than 6.30. What shall he do?
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