10
since you already have a backup. try taking the thadmin module from the full package of the version that you are supposedly updated to and update it. thadmin has been updated and changes were made in different parts from 2.30 to 2.31 and 2.32. and then use the checksum from that full package to verify all of the files.
i havent done an update from 2.30 before, but that is my suggestion.
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