Well, just as the title says, dont update your HW44 acekard 2i flashcard for DSi V1.43, it will ruin your ak2i or sth.
Here is the news from official site
HW44 Can't Update for 1.4.3 Temporary
Update for DSi1.4.3 can't support AK2i of HW44 temporary now. We're still looking into it. Please be patient. And we're sorry for all the inconvenience caused.
Here is the latest acekard 2i