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The older versions of parcel activation failed

The older versions of parcel activation failed

New Contributor
After updating cloudera manager and CDH from 5.2.0 to 5.7.5, I now want to roll back the CDH version from 5.7.5 to 5.2.0. But the older versions of parcel activation failed.The error is that "org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of com.cloudera.cmf.model.ParcelServicesRestartInfo out of START_ARRAY token at [Source: java.io.StringReader@3699bc13; line: 1, column: 1]".Then what should I do?Thanks!