Cross-version configuration upgrading method and device of equipment

The invention relates to a cross-version configuration upgrading method and device for equipment. The method comprises the following steps: switching equipment from an original version to a first specific version; restarting the device so as to generate configuration data and store the configuration data in a flash memory of the device; switching the device from the first specific version to a second specific version; reading the configuration data from the flash memory and storing the configuration data as a formal configuration file in the starting process of the equipment; and restarting the equipment, and switching the equipment from the second specific version to a formal version to complete configuration upgrading. According to the cross-version configuration upgrading method and device for the equipment, the version upgrading process of two branch code systems can be simplified, the labor and time cost is remarkably reduced, a data protection function is further provided, and smooth proceeding of the u