Hacking I remember on the website we are told to backup NAND in case things got harry...

[Tac 21]

what is this for exactly?

also... on boot9strap the RTC when I set it to that it never works... whats with that?

 

[gnmmarechal]

Essentially. If you ever fuck up and brick your system, you'll be able to easily restore it by restoring the NAND backup in most cases.

 

[Quantumcat]

...Potter?

 

[GizmoTheGreen]

yeah... why would you want a backup of anything at all ever?

 

[aos10]

what the hell is NAND?
is it a game? sounds like a game save (me trying to get funny)

anyway, NAND is like gnmmarechal said, RTC is the 3DS clock system, it rests when you remove the battery, when you change the time inside 3DS settings, some games will break the time system like pokemon and lock some events, but if you change the RTC, you can baypass the anti time travel system.

# What is the Raw RTC?

As you may have seen above in the 3DBrew link, your system has a special hidden clock inside that continues to move forward just like the regular clock and cannot be changed outside of normal circumstances. Upon booting, many games check for differences in the RTC (Your normal system clock) and Raw RTC. Games can detect whether you changed your system clock. However, changing the Raw RTC prevents the games from detecting that if done properly.

As a note, some people call it the Raw RTC, RTC, or hardware clock, but all of these are the same thing (except Nintendo refers to the System Clock which you can set as the `RTC`).