So the latest AuReiNand patched AGB and TWL firm to boot GBA and DsiWare games! If you'd like to reinstall the regular Firms, use this (this is not my tutorial - I just would like to repost this in a separate thread):
(P.S. This is edited a little bit to show exactly what I did- not what Nephiel wrote)
Re-Install AGB and TWL with this Tutorial!
(P.S. This is edited a little bit to show exactly what I did- not what Nephiel wrote)