If you put the wrong type of backup disc into the xbox and got some type of auth failure warnings, the console is flagged. Otherwise it should be safe. Just restore the original drive firmware and everything goes back.
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There is a software called Xval to check the security status of the console. check it out
If you put the wrong type of backup disc into the xbox and got some type of auth failure warnings, the console is flagged. Otherwise it should be safe. Just restore the original drive firmware and everything goes back.