So as you can see on this thread, I successfully installed arm9loaderhax on the o3DSXL. Now, I got myself another 3DS with 9.9.0 and I tried installing a9lh again. However, during the process of downgrading to 2.1.0, I noticed that the downgrade can't proceed because of lack of space(the SD Card is 2GB which is a bad memory). I accidentally press continue and it proceeds. Since I panicked, I forced shutdown the 3DS. Afterwards, the 3DS no longer respond. It feels like Black Screen of Death with no display and has blue light(red if low battery). While searching for answers, it seems that no one mentioned this issue during downgrading. The only solution is to open the insides of the 3DS console and unplug/plug the WiFi chip. I did that but no results. I'm afraid that there's no answers to fix it and I wasted cash just to buy another one. So to save the 3DS that I spent P11K, can you help me fix it? If no solution, I really had no choice but to buy another one instead.