I'm really nervous trying to setup this DS Profile Exploit, even though I've read Gateway user manual many times. So, I'd like to have someone to look at what I've prepared, the downgrading process I think I should do, and correct me if I misunderstand anything or there are other things I should do. - My N3DS XL is USA region. OFW is 9.0.0-20U. - I already made a sysNAND backup. - I already set up an emuNAND on My N3DS. - sysNAND and emuNAND are unlinked (emuNAND was formatted). So, according to user manual, first, I'd need to boot into Gateway Menu and select "NVRAM INSTALL". Then, boot into sysNAND by holding 'B', then press 'A', the press 'X'. Then, in sysNAND, I'd need to select DevMenu ROM and boot it up. I found 2 DevMenu.3ds files: 1) DevMenu.3ds (CRC32: e4af558f) (MD5: e65629fbe2ae8a419cf8624df78e78b2) 2) DevMenu.3ds (CRC32: 62927c39) (MD5: b064d2cd8026825fe8324581552dd369) Which one should I use? I have read that I'd need the specific version or I'll get black screens. Then, with correct DevMenu, I'll need to install 'mset_usa.cia' into sysNAND. Do I need to install 'bluecardfix.cia' on sysNAND as well? There is no mention of this in the manual, but it's in the MSET 4.5 Installer folder. After finished installing 'mset_usa.cia' and shut the system down, according to manual, the exploit should be successfully installed. Are those all steps I'd need to take? After installing mset_usa.cia, I can access Gateway Menu simply by choosing 'Nintendo DS Profile' in System Settings? Anyway, in a thread discussing DS Exploit, it was mentioned that in order to make the exploit stick, I'd need 'N3DS_ROPInstaller.nds' which I do not have. The file is not included in MSET 4.5 Installer folder. And I couldn't find out where I can get it. As I understand, N3DS_ROPInstaller.nds is only need if I want to play NDS games?