# Problem: Authorization Error C3
This message will be displayed when card is paired with other UFSx box. Solution is to re-pair Card with UFSx box.
# Problem: Authorization Error C4 DMxxxx
Problem is caused by corrupted box pair data stored in Typhoon Card. This data could be corrupted if your box was reflashed by ufs3tools, REQ->FBI checksums was re-generated, new UFS firmware was released, and so on. To repair this problem re-pair UFSx with Typhoon Card.
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