Please choose update file according to your console. If you're using DSi or DSXL or 3DS please use ak2ifw_update_3ds30_DSi143_onDSi_and_DSXL_and3DS.nds to update. If you're using DSL or DSPhat please use ak2ifw_update_3ds30_DSi143_onDSL.nds to update.
Just follow this instructions after you run the update file.
1. Copy the correct update file to the root of your MicroSD card.
2. If you're using ak2ifw_update_3ds30_DSi143_onDSL.nds on your DSphat or DSL, please eject your AK2i and reinsert it after the update program is running. Then press B, then press START key to finish update.
3. If you're using ak2ifw_update_3ds30_DSi143_onDSi_and_DSXL_and3DS.nds on your DSi or DSXL or 3DS, please press START key to finish update.
This update file DO NOT support AK2i which HWID is '44' temporarily. You can find your HWID of AK2i by selecting "help" after pressing START in AK2i menu. AK2i which HWID is '44' only exsit in the cards sold before Feb. 2009.