I dont have farsi sort problem, but see the attachment, the problem is that the english words are not sorted correctly ...

also I enter through the web, mysql command line, phpMyAdmin the following data:
Asad
asad
Asad
asad

and again by executing the following query I get the same dispaly:
SELECT * FROM tblName order by fieldName;

or

SELECT * FROM tblName order by fieldName COLLATE utf8_persian_ci;

The Result:
Asad
asad
Asad
asad