Instructions to delete a language to Advan devices

Advan i5C Duo Advan i5C Duo
Advan i7 Plus Advan i7 Plus
Advan G-Tab 8 Advan G-Tab 8
Advan 5041 Advan 5041
Advan I45 Advan I45
Advan I55C Advan I55C
Advan S40 Advan S40
Advan S45C Advan S45C
Advan ADVAN S4M Advan ADVAN S4M
Advan S5G Advan S5G