This is a guide to get and install it.

Warning MAKE A NAND BACKUP. No chance of brick, but hey.

Warning: Not responsible for any damage.

Lets begin

Spoiler

1. Using 3DNus, Download the microSD Management cia for your region
2. Copy that CIA to your SD.
3. Turn on your 3DS
4. Open FBI
5. Select SD
   
6. Select the CIA
7. Install
8. Go to FBi->Titles and select it.
9. Profit

FAQ's

Q: Why?
A: Idk.

Q. How did you come up with this?
A: I am bored

Q: Why won't this appear on my Homescreen?
A: Because it was never supposed to be on O3DS or the Homemenu

Q: I don't see it in settings.
A: The settings isn't a N3DS version. It won't show.

Q: Transfers are SLOWWWW. WHY?
A: Your internet

Q: Can I install the N3DS settings?
A: I think. However you should. Because if you format, you are SOL unless you restore.

Q: Why can't I use a FTP server.
A: You can. But some people can't set it up.

Q: Why can't I pop out the SD?
A: You can. It is For anyone who doesn't want to turn their 3DS off or protecting the SD.​

 

[resetes12]

Transfer speeds aren't dependent on internet speed, but rather the router itself. You don't even need internet to transfer files over your own network.

Not really, it's also dependent on the network speed of the 3DS which is fairly slow (1mb/s or 1,5mb/s) and also the speed of the SD card. Maximum I got was 900kb/s internet side and 1,2mb/s when installing with FBI with a Sandisk SD 32Gb. And I have a 300Mbits internet.

 

[wicksand420]

Hey all, Im not sure if anybody else figured this out yet or not, but i installed the stock micro sd manager on my o3ds and booted it with fbi, everything works excellently and it boots back to fbi when i close the app.

 

[Jayro]

This is a guide to get and install it.

Warning MAKE A NAND BACKUP. No chance of brick, but hey.

Warning: Not responsible for any damage.

Lets begin

Spoiler

1. Using 3DNus, Download the microSD Management cia for your region
2. Copy that CIA to your SD.
3. Turn on your 3DS
4. Open FBI
5. Select SD
   
6. Select the CIA
7. Install
8. Go to FBi->Titles and select it.
9. Profit

FAQ's

Q: Why?
A: Idk.

Q. How did you come up with this?
A: I am bored

Q: Why won't this appear on my Homescreen?
A: Because it was never supposed to be on O3DS or the Homemenu

Q: I don't see it in settings.
A: The settings isn't a N3DS version. It won't show.

Q: Transfers are SLOWWWW. WHY?
A: Your internet

Q: Can I install the N3DS settings?
A: I think. However you should. Because if you format, you are SOL unless you restore.

Q: Why can't I use a FTP server.
A: You can. But some people can't set it up.

Q: Why can't I pop out the SD?
A: You can. It is For anyone who doesn't want to turn their 3DS off or protecting the SD.​

The bolded words are false, the wireless hardware is capped at just under 1MB/s.

 

[HugaTheFox]

The bolded words are false, the wireless hardware is capped at just under 1MB/s.

When I mean slow, I didn't mean just because the wireless speed of the 3ds. My internet is slow, so it goes 50KB per second.

 

[Jayro]

When I mean slow, I didn't mean just because the wireless speed of the 3ds. My internet is slow, so it goes 50KB per second.

Oh, ok. It seemed misleading since I get a steady 800Mb/s to and from my O3DS.

 

[HugaTheFox]

Oh, ok. It seemed misleading since I get a steady 800Mb/s to and from my O3DS.

Nice. I would die for an connection like that.