Give both the micro SD slot and the 3DS game slot a blow out, it does happen from time to time
Put the thing back together and try again
As in physicly blow into the slots
My 3DS is 4.3.0-10E (E because I live in the UK so it's the Europeon bios that bit shouldn't make any difference)
My Acekard 2i is AKAIO v1.8.9 HW: 81 SVN: 1121 the icon is a DS cart with a green sticker with a black horse, game title is PIPPA FUNNELL UBISOFT
EDIT:- Lame yeah looks like there is another update.. guess I aint updating
Keep emailing the Acekard team for an update last one they had for ages but didn't publicly share it (I updated mine months ago)
On the upside atleast you have a DSlite to play on
I have both myself though my girlfriend tends to use the DSLite infact she killed the lid on it, it just flopps around but the system still works (annoyed that she nacked flippyness of the top screen)