Hi
I got this error saying that my 3DS has restricted access to going online
I followed the steps to install the Nimbus app. Everything went well. I was able to access MK7 online, but after a few minutes, I got this “002-0121 This device’s access to online services has been restricted by Nintendo” error for no reason.
However when I enable the “enable loading external FIRMs and modules” option from the Luma menu, I get this
Is there a step I missed that could have caused the ban? Did I do something wrong in the installation process?
That error code 002-0150 is a serial number mismatch.
Did you ever change the serial number? Or did you just buy this 3DS?
Hmmm no, I don’t know how to do that kind of things. I’ve had my 3ds since 2018.
As an additional fact, I was banned a long time ago for having CFW and I got unbanned thanks to an internet tutorial so I don’t know if that has anything to do with the ban
Yes, “unbanning” from Nintendo Network involves changing the serial.
I will ask a Network Mod to provide the steps to revert the 3DS serial.
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Pretendo doesn’t work with swapped LFCS files. Revert the original one to play. If you lost the backup, use Release Restore LFCS v1.2 · Preloading/Restore-LFCS_B · GitHub
I got this copy fail error, am I cooked?
Hello. Don’t panic!
I don’t know what this means (I am way more a Wii U guy than 3DS), but Piplup does and they’ll respond when they can. Thank you for that image though, I think it will help.
What did you do to get this error?
I got a message asking if I wanted to make a backup of my current LFCS which I accepted but I got that error.
Then a menu appears with some restoration options, the same copy fail error appears when I try to restore the Original LFCS
After much trying, I finally got past that error. But I still get error 002-0150 when I try to access MK7 online.
Did you try all the 5 options?
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Ahhh silly me 
I had limited myself to the “Restore LFCS” option because I had no idea what the other 4 were for, but after you told me to try the other ones, I went with “Remove Seed” first and… voilà it’s working now.
Thank you so much!
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I’m glad your issue was able to be resolved. Welcome to Pretendo! 
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