Description: The status indicates the status of current upload operation. It is updated automatically. Modifying this flag does not take any effect. none(0) means no upload operation. success(1) means upload operation is successful. inProgress(2) means current upload operation is in progress. errIvalidIp(3) means upload operation is failed due to invalid IP address. errTftpFailed(4) means upload operation is failed due to failed TFTP operation. errBusy(5) means upload operation is failed due to other upload in processing. errMemoryInsufficient(6) means upload operation is failed due to memory insufficient. errInvalidImage(7) means upload operation is failed due to invalid image. errWriteFlash(8) means upload operation is failed due to failed writing flash. errSameImageExisted(9) means upload operation is failed because the upload image is the same as the one in flash. errUnknownImage(10) means upload operation is failed because the type of upload image is unknown. errFlashImageNotFound(11) means upload operation is failed because the location in flash to upload the image is not found. errFlashEntryNotFound(12) means upload operation is failed because the corresponding entry in flash to upload the image is not found. errCrc(13) means upload operation is failed due to incorrect CRC in the upload image. errImageSize(14) means upload operation is failed due to invalid image size. errEraseFlash(15) means upload operation is failed due to failed erasing flash. errIncorrectImageVersion(16) means upload operation is failed due to incorrect version of the upload image. errDownloadUrl(17) means upload operation is failed due to fail to download image from URL. errInvalidUrl(18) means upload operation is failed due to invalid URL. errInvalidFilename(19) means upload operation is failed due to invalid filename of the upload image. errInvalidPath(20) means upload operation is failed due to invalid path of the upload image.