How to correct ID3v1 and ID3v2 tags with EasyTag by converting them to Unicode

1. Install EasyTag
   
   Code:

   apt-get install easytag

2. Run EasyTag:
3. Go to Applications -> Sound & Video -> EasyTag
   
4. Select "Settings" -> "Preferences"
   
5. Select the "ID3 Settings tab"
   
6. Check "Automatically convert old ID3v2 versions"
   
7. Write "ID3v2-tag" version: ID3v2.4, Charset: Unicode
8. Write "ID3v1-tag", Charset: Unicode, Additional settings for iconv: "//Translit"
   
9. Check the "Non-standard" and select your encoding (Chinese Traditional BIG5, Chinese Simpliefied GB2312, Japanese EUC-JP, Cyrrilic Windows 1251, Hebrew Windows 1255, Arabic Windows 1256, Greek Windows 1253, Cyrrilic/Ukranian KOI8-U, Korean EUC-KR, Turkish Windows 1254 ...)
   
10. Hit the OK button to apply the changes.
    
11. Open your music folder with EasyTag.
12. Click "Save file(s)" to save changes.

Solving the "Operation not supported" problem
EasyTag wasn't able to save many tags for me showing the following error in its log:
I was able to fix the problem by changing ID3v2.4 onto ID3v2.3 on step 7.