Hacking Updating my emuNAND?

[Mayo1990]

Hello there, It's my first thread here and as you can tell by the title of the thread, I'm quite new into the emuNAND scene. My main question is how to update my emuNAND firmware without using the System Update feature, as I just fear I could update my sysNAND and screw everything.
For example, I updated to 10.3 from the system update the first time I set up RXtools and such, but when I picked the 10.4 files and installed them through BigBlueMenu the console still asks me to do the system update, and yes. I did pick all the necessary files.

Also, I have another important question to ask: how do I update a fresh 9.2 emuNAND on latest update trough BigBlueMenu? Do I have to pick up all the 10.3/10.4 files? Thanks in advance

 

[Naxster]

First make sure you unlink your sysNAND and emuNAND, so that your NANDS are separated and will not interfere each other when you install games etc...
But mainly look at this tutorial and you will be good, it will guide through everything you want to know.
https://gbatemp.net/threads/tutorial-installing-rxtools-custom-firmware-3ds-and-2ds.390867/

If look here, taken from the guide, you will see the things you asked for:

Section 6 - Unlinking your NANDS
Using the recommended method of formatting SysNAND​

We will now unlink your NANDs. But first, some information.

The benefits of unlinking your NANDs:

• You will not have to unwrap all your games whenever you enter emuNAND.
  • This doesn't happen to everyone, but if it does, unlinking your NANDs will stop this from happening.
• In the past, some users have reported their sysNAND updating even though they were sure they updated emuNAND. These same people happened to have linked NANDs. We don't know if it is related but it is safer unlink your NANDs if you fear this may happen to you.
• You can go into sysNAND's Data Management (found in the System Settings app) safely.
  • Doing this while your NANDs are linked will result in your emuNAND games, saves, themes, etc. being deleted.
• If you have Menuhax installed, you will not get a black screen when entering EmuNAND.
  • You can bypass this by holding a button when launching EmuNAND (which will disable Menuhax from loading). But who wants to remember to hold a button every time?

The disadvantages of unlinking your NANDs:

• If you want to play GBA games in emuNAND, you will have to install the GBA game in both NANDs, taking up double the space.
  • If your NANDs are linked, you only need to install GBA games in sysNAND once.
• Your sysNAND will be formatted.
  • Don't worry, everything that was on your sysNAND is in emuNAND instead.
  • If you don't like this, you can always use EmuNAND9 tool to restore your NAND.bin, thus recovering all your sysNAND stuff.
• If you have Menuhax installed, you will have to reinstall it!

Now finally, how to unlink your NANDs:

1. Download TinyFormat
2. Place the .cia in your SD card (CIAs folder if you want to be organized)
3. Boot into rxmode SysNAND
   • Don't know how? Hold L when booting rxTools to get into the menu. From there you can select which rxmode you would like to access. Note: 2.5.2 users have to hold R instead.
4. Once you're in the HOME menu, launch BigBlueMenu, Devmenu_2x, or FBI
5. Install the TinyFormat.cia
6. Press HOME and choose to launch TinyFormat
7. Follow the instructions to complete the formatting of SysNAND, and thus unlinking your NANDs
8. Turn off your 3DS after the process is finished
9. Reboot your 3DS and complete the Initial 3DS Setup.
10. NANDs are now unlinked!

How unlinked NANDs may look like on your SD card:

​

On your SD card, open the "Nintendo 3DS" folder.
The folder with the smallest size and random numbers/letters belongs to your sysNAND. This is your sysNAND's ID folder.

Go back to the 3DSCFWKIT_V3.00-STABLE folder and copy the dbs folder to this directory:
SysnandIDFolder/RandomNumbersAndLettersFolder/

If there is a "dbs" folder already, you are in the wrong ID folder!

Should look similar to this

Don't worry, it is normal that the two files are 0KB!

Lastly, boot up your 3DS/2DS and go into Settings —> Data Management —> Software. It’ll ask to reset or repair your software management information or sd card, so allow it to do so.

Section 7 - Updating EmuNAND!​

If you have an update nag on sysnand, follow these short steps to delete the update from your system first, reducing any risk of updating sysnand to be EXTREMELY unlikely. Do not do step 4 obviously, click "no"!


To update your emunand, only do so through the System Settings app.
Do NOT update if it asks you if you're "ready to start system update" or whatever it says whenever you boot your 3DS. Also, NEVER update through the eShop. It will update your sysNAND instead.

If you need Emunand tool (for backing up and restoring your emuNAND if you ever need to), then you can find it here.

How to properly update emuNAND on an O3DS or 2DS:

• Boot into Emunand, and launch System Settings.
• Make sure it says RX-E or RX3D in front of the version number to be sure that you are in emuNAND
• Do NOT exit System Settings at this point or you will be kicked back to sysNAND!
• Press Other Settings
• Scroll to the right until you see System Update
• Press System Update and accept
• When it is done, your 3DS will reboot into sysNAND
• When you launch rxTools and boot into emuNAND, you will see that it is now updated to the latest version