mario and sonic at the olympic winter games doesn't work.

whenever i play my mario/sonic at winter games, it will say corrupted file and will force me to press A to go back to menu. where can i get a pacthed version of it? btw: i use acekard2 not acekard2i

Update to AKAIO 1.6RC2, it should work fine with the Mario&Sonic Winter Olympics game.
http://www.normmatt.com/forum/viewtopic.php?t=359&f=8&sid=d3a2973cb71aeadadbed35719b3e9005

ok.... i got it and i extracted it, now what? :P

Replace your current firmware with it.
This will tell you everything you need to know about how to use AKAIO.
http://wiki.gbatemp.net/wiki/index.php?title=AKAIO

thanks! ;D but ...is there any cons effect though?

Not really. If you are using Official firmware now, all your save files will be NDS.SAV names.
AKAIO switches to just .SAVYou may have to either rename your files or change the save extension settings:
http://wiki.gbatemp.net/wiki/index.php?title=AKAIO#.28Tab_3.29_Advanced_Settings