280EA266 88A62E5C
hope this works! if no... look at the walkthroughs or this page:
http://www.supercheats.com/gameboyadvance/walkthroughs/pokemonsapphire-walkthrough15.txt
or...
http://www.supercheats.com/gameboyadvance/walkthroughs/pokemonsapphire-walkthrough12.txt
really hope it helps!