Lumabug
What is the lumabug?
Lumabug is a poor term for an issue that occurs due to the fact that we change the real time clock during the modding process.
The 3DS has two clocks - the real time clock(RTC), starting at 01-01-2000 and ticking up, normally never set, and the HOME menu clock, set as a constant offset from the real time clock. During the hacking process, we set the real time clock to the real time, and set the offset to 0. However, some parts of the system use the real time clock. One of these is the date of your last earned gamecoin. When you earn a gamecoin for the first time after hacking your system, the system thinks that it is the first time you've earned one in 22 years. For some reason, when it has to go through such a large date range, it takes several minutes to do it.
This causes the system to need several minutes to boot.
How do I know if my console is currently experiencing the lumabug?
While experiencing this bug, you cannot boot into the HOME menu normally, but you should still be able to access the Rosalina Menu (L + D-PAD Down + SELECT in the black screen), as well as GodMode9 and the Luma3DS configuration menu.
How can I fix the issue?
- Power off the console
- Take out any game cartridge, but leave the SD card in
- the cartridge is unrelated but when it's not being read correctly it can prevent the system from booting up as well
- Power on the console
- Leave the console open and powered on for 10-15 minutes. Do not touch the console during this time
- If the console boots successfully in that time, the bug is now fixed and is unlikely to happen again. If the console still fails to boot to home menu, ask here for more help. Mention that you have already tried the Luma black screen process.