3DS Stuck (2.1.0 Without Functional Browser) - GamerTunerit/Guide GitHub Wiki

IF YOU HAVE A NEW 3DS AND SOMEHOW GET YOURSELF TO 2.1 WITH NO NAND BACKUPS OR A BROKEN BROWSER, DO NOT UPDATE. IF YOU UPDATE FROM A 2.1 NEW 3DS TO A VERSION ABOVE 6.X, YOU WILL BRICK. FOR NOW, YOU MUST RESTORE FROM A NAND BACKUP OF SOME KIND.

If you downgraded to 2.1.0, on Old 3DS, 2DS, or New 3DS but for some reason you have a nonfunctional browser, this guide is for you.

If you downgraded to 2.1.0 on Old 3DS or 2DS but for some reason have no functional NAND backups (with or without a functional browser), you can update to 9.2.0 by updating via a cart to 4.X, then following this.

If you downgraded to 2.1.0 on New 3DS but for some reason have no functional NAND backups (with or without a functional browser), we have a mostly working solution involving EmuNAND + NCSD / Crypto trickery. A writeup on how this is done can be found here.

If you downgraded to 2.1.0 on New 3DS or 2DS and left Wireless Communication off (with or without a functional browser), you can reset the wireless to be on by removing the battery for several seconds then booting back up.

What you need

Instructions

  1. Copy Launcher.dat from the Decrypt9WIP zip to the root of your SD card
  2. Copy your NAND backup to your SD card
  3. Launch your game cart which contains a 4.X update
  4. Accept the update when prompted
  5. Wait for it to reboot you
  6. Open the browser and go to http://www.reboot.ms/3ds/load.html?Launcher.dat
  7. If the exploit was successful, you will have booted into Decrypt9
  8. Go to SysNAND File Options, then select NAND Restore
  9. Restore from sysNAND_original.bin