Import mysql 5.5 dump in to 5.1
If your getting the error Unknown collation: ‘utf8mb4_unicode_ci‘ Its probally becuase you trying to inport a 5.5 export to a 5.1 databse. You can try changing CHARSET=utf8mb4 to CHARSET=utf8 COLLATE=utf8mb4_unicode_ci COLLATE=utf8_general_ci This will only work if you don’t have invalid caratuers in your mysql dump but it may help.
