You might also want to check if you have dmnt_cheats_enabled_by_default set to u8!0x1 and change it to u8!0x0.
It took me quite a while to figure out why I suddenly had everything unlocked in Mario Kart 8 after switching from SX OS to Atmosphere (Kosmos).
Does not answer your question, but might be a solution to your concern:
Boot some linux live distribution on your friends computer and copy over the data. This way you can assure that the operating system is clean.
Should I consider updating to 5.5.0 if I'm on 5.4.0 currently? 5.5.0 seems to be current firmware, so OTA update won't get me into trouble?!
iCEQB: good point, thank you.
After starting emuNAND mode, entering/leaving settings (to check version number) the 3DS seems to fall back to original NAND? Is this expected behavior?
Guess the emuNAND mode now is the preferred/default one.
If there's a emuNAND partition it boots into it. Without it should fallback to the classic GW-Mode. Pressing L-Button allows manually choosing between the modes.
E: thanks for the clarification Cyan
Double check your firewall rules. The opened port should be forwarded to the ip address of the computer running the ftp server.
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Maybe better do it step by step:
Start the Serv-U FTP-Server and try to connect it from localhost (same computer). Failure means your Serv-U isnt properly...
sell your device. You don't use it anyways and chances 6.x gets hacked are....
If you are really into piracy homebrew get a 4.5 3DS now as it can/will become more expensive/unavailable (see PS3...)
i got my Gateway on saturday, packaging is same as yours.
Only difference is my blue card has "X-B" written on red PCB - and the red card is completely broken.
I would advise you to check it for functionality