Enable trading to Ruby and Sapphire
Fix the Network Machine on Island 1. This is done by getting both the Sapphire and Ruby (in game items) and bringing them to the machine

Secret Japanese Time Glitch Fix
In order to do this, you will need Ruby or Sapphire, two GBA's, and a link cable. When the game gets to the start up menu, press select and B. Then press A on the next screen. Next, put the link cable in. Make sure the purple tong is in the GBA with FR/LG, and the grey one is in the GBA with R/S. Press A to do the transfer. When you start up the second GBA, with R/S in it, press Select and Start on the Gameboys default screen to fix the time glitch in R/S