After I took a look through this forum, I couldn't found anyone here post issue like this, so I started this one. Has anyone here experienced 3DS stopped working when trying to inject QR code exploit although you can successfully done it before? I tried QR code injection on my Old 3DSXL and succeeded on Pokemon Y before. But when I tried it again a few days later, my 3DSXL hang all way up when internet browser show the exploit message. I have to do hard reset (press power more than 5 secs) to shut 3DSXL down. I do have a running game because I want to scan qr and inject the exploit directly to the game but after I scanned the code and launched Internet Browser with page loaded success, the 3DS just hanged up right there. My current sysNAND firmware version is 4.2 and I haven't done any system (with Gateway) update before. I still wondered why this happened?