How to upgrade fpdf 1.6 to 1.8 in oscommerce?

[BigStar]

I used fpdf version 1.6 in php 5.3, now i upgrade php version to 7.1,

After upgrade php version, it can't create pdf file.

So how to upgrade fpdf 1.6 to 1.8?

Thank for everybody.

[♥JcMagpie]

simply download the 1.8 files and install onto your site.

http://www.fpdf.org/?lang=en