How to Install orignal PTCL's Firmware on DSL-2750U

The video is about updating/Installing Pakistani ISP Ptcl's firmware on your D-link Dsl-2750U router hardware version J1. Firmware link: https://drive.google.com/open?id=1i642bnLTuNx3a7YwkJIQiKcKiBz36b8m