i'm on macbook pro os x 10.9.5 about to upgrade to el capitan. On Wed, Apr 6, 2016 at 11:03 AM, suk wah Bernstein < sukwahbernstein at gmail.com> wrote: > i'm still on gnu 2.4.10. would anyone mind to show me step-by-step how to > upgrade to the current gnu version? thanks so much >