When I was using the online http://3ds.guide website, during step 3 section IV number 10 (3.IV.10) it instructed to "Update your device...," and so I did. However, this led me to update all of the way to 11.4 where Homebrew no longer works since one has not been released for this version (It created one for 11.3 and gave an error, at least I think it doesn't work). After seeing this (which I noticed AFTER I finished the rest of the guide, at this moment I just wanted to access Homebrew), I attempted to research on my own how to downgrade from 11.4 to 11.3 with CFW (I have a backup of OTP.bin and <serial num>.bin, I just don't know how to use them), and could not find any clear guides, most of them being from around 2015. Not finding anything, I decided to experiment on my own in an attempt to downgrade, and went to Godmode9 and then sd/CTRTransfer/<serial_num>.bin (which I kept in the folder), selected NAND image options and then Restore SysNAND (safe). After inputting the codes and waiting for five minutes, it finished so I went to the home menu. To my dismay, I saw none of the apps I had previously had (Luma, FBI, Homebrew, etc.) and could not launch Homebrew through soundhax. I had no idea what to do after this sudden change so I went to Luma after startup with start and tried to restore there. That did not fix it either. Next, I went to sd/.../OTP.bin, thinking that I could mount the drive. There was an option, but I had no clue which one to mount. Even then, it didn't have the restore function <serial_num>.bin did. Next I went to <serial_num>.bin and attempted to mount it to something as well, but I had no idea what to. Then I went to FBI.bin and mounted it to the .app file, as the instructions had before and it still did nothing. Is there any way to recover Homebrew or downgrade without completely restarting from scratch, since it took me an extremely long time of trial and error (restarting around three times) to get the CFW, and I would hate to have to go through this process again. Thank you to whoever can find what I did wrong and/or how to fix it. I have an Old 3DS P.S. - The main reason for my attempt at getting a CFW is to remove the black lines in Pokemon Sun and Moon the same way the emulator would. P.P.S - I apologize for the lengthy paragraph - I just wanted to describe my problem in the most detailed way I could. EDIT: This has been solved.