The file you named, , appears to be a firmware flash package for the Zong (Jazz) 4G device model E5573CS-322 , likely a mobile Wi-Fi hotspot (MiFi) router.
Would you like instructions on this firmware, or help finding drivers/tools for the E5573Cs-322? ZONG E5573CS-322 21.323.01.00.306 DIRECT FLASH.7z