Most of the games I download dosn\'t work on my R4

Don't know why, I bought this a long time ago, I think it needs the latest version or something, can someone help?
Post Merge: [time]1299314389[/time]
I have V1.18.

use this firmware http://filetrip.net/f24208-Wood-R4-1-26.html

I have R4i, and it's 1.26. I have the same problem, too.