r4ids.com normal kernel is fully compatible with ak2i. I saw R4iDS.com 2.0 PLUS kernel. After some investigation, I noticed it is a kind of Wood. So I tried to launch it in my AK2i. What I got was just white screens. Restating NDSL... white screen. So my AK2i was bricked now. I tried to flash 3DSV3(ハローキティ) then 3DSV1(こてんこてんこ). Strangely, こてんこてんこ said "データがよめませんでした", meaning save data error. So the DS card tried to launch actual instead of AK2i. I noticed the DSLite side of bootstrap is broken. 1.4.1 updater returns "Acekard 2i" banner to NDSL, so I flashed it to ak2i. unbricked... summary: 1. never try R4iDS.com 2.0 PLUS kernel on AK2i. Perhaps they added Wood command in latest firmware. 2. if you get white screens on NDSL, try to flash AK2i using 141, 3dsv1, 3dsv2, 3ds21 updater successively.