Grand ChinaTown Wars wifi-problem?

Any problem on wifi gta chinatown wars? I got 100% and want the Xin missions, but whenever i got wifi, it doesnt't connect, it only goes to the connecting page and it stays connecting. I got all the settings for my router and i put my ds right next to the router, and it still doesn't connect, any1 got an answer about this or to this problem?

I think someone found a fix here
https://www.romulation.org/forum/index.php?topic=14970.0

does these work for r4iii, even though its says just r4?
Post Merge: [time]1266240990[/time]
and also, the files that the guys has to the link doesn't work, the site says this file is not here?