title: "Installing boot9strap (DSiWare Save Injection)"
---
{% include toc title="Table of Contents" %}
### Required Reading
Note that if you have any payload files other than `GodMode9.firm` in the `/luma/payloads/` folder on your SD card, holding (Start) on boot will display a "chainloader menu" where you will have to use the D-Pad and the (A) button to select "GodMode9" for these instructions.
To use the [magnet](https://wikipedia.org/wiki/Magnet_URI_scheme) links on this page, you will need a torrent client like [Deluge](http://dev.deluge-torrent.org/wiki/Download).
To extract the `.7z` files linked on this page, you will need a file archiver like [7-Zip](http://www.7-zip.org/) or [The Unarchiver](https://theunarchiver.com/).
If you do not use the correct `.firm` corresponding to the target 3DS, you will BRICK! Ensure you download and use the correct one!
{: .notice--danger}
### What You Need
* Two 3DS family devices
+ **The source 3DS**: the device running boot9strap *on the latest version*
Use a [save manager](https://github.com/FlagBrew/Checkpoint/releases/latest) to backup any saves you care about on *the target 3DS* (it will be formatted!)
1. Copy the relevant `public.sav` from the `/dsiware/<8-character-id>/` folder in the 3ds_dsiwarehax_installer `.zip` to the root of **the source 3DS**'s SD card
1. Hold (R) and press (B) at the same time to eject **the source 3DS**'s SD card
1. Put **the source 3DS**'s SD card into your computer
1. Put **the target 3DS**'s SD card into your computer
1. **Backup every file on both 3DS's SD cards to two separate folders on your computer (keep track of which is which)!**
1. Reinsert each SD card back into their corresponding 3DS
1. Press (Start) on **the source 3DS** to reboot
#### Section II - Installing the Save
1. Boot **the source 3DS** while holding (Start) to launch GodMode9
1. Navigate to `[0:] SDCARD`
1. Press (Y) on `public.sav` to copy it
1. Press (B) to get back to the main menu
1. Navigate to `SYSNAND TWLN` -> `title` -> `00030004`
1. Navigate to the folder for your game and region:
+ **Fieldrunners USA Region**: `4b464445`
+ **Fieldrunners EUR Region**: `4b464456`
+ **Legends of Exidia USA Region**: `4b4c4545`
+ **Legends of Exidia EUR Region**: `4b4c4556`
+ **Legends of Exidia JPN Region**: `4b4c454a`
+ **Guitar Rock Tour EUR Region**: `4b475256`
+ **Guitar Rock Tour USA Region**: `4b475245`
+ **The Legend of Zelda: Four Swords EUR Region**: `4b513956`
+ **The Legend of Zelda: Four Swords USA Region**: `4b513945`
1. Navigate to the `data` folder
1. Press (X) on the existing `public.sav` to delete it
1. Input the key combo given to unlock SysNAND (lvl1) writing
1. Press (A) to continue
1. Press (B) to decline relocking write permissions if prompted
1. Press (Y) to paste `public.sav`
1. Select "Copy path(s)"
1. Press (Start) to reboot **the source 3DS**
1. Launch your DSiWare game on **the source 3DS**
1. Test if the save is functional
+ **Fieldrunners**: Touch the 'Scores' button at the main menu
+ **Legends of Exidia**: After pressing (A) or (Start) at the two title screens, select the first save slot and press continue
+ **Guitar Rock Tour**: Scroll down and go to High-Scores -> Drums -> Easy
+ **The Legend of Zelda: Four Swords**: Just start the game
+ If your game has an error about `boot.nds` or a white screen, **then the exploit has been successful**
+ If your game behaves normally and does not give you this error, then you should stop and figure out what went wrong
+ If you get a black screen, [follow this troubleshooting guide](troubleshooting#dsi--ds-functionality-is-broken-after-completing-the-guide)
#### Section III - System Transfer
1. **Backup every file on both 3DS's SD cards to two separate folders on your computer (keep track of which is which)!**
1. Reinsert each SD card back into their corresponding 3DS
1. If **the target 3DS** has a Nintendo Network ID on it, you must format the device using System Settings:
+ Go to the last page of "Other Settings" and select "Format System Memory", then follow all instructions
1. Read the following:
+ Your CFW 3DS = the source 3DS = "Source System"
+ Your Stock 3DS = the target 3DS = "Target System"
+ **Move DSiWare titles if prompted!**
+ Do **NOT** delete the source system's SD card contents if prompted
+ Make sure neither device's battery dies during the transfer
+ **Old 3DS or Old 2DS (source) to New 3DS or New 2DS (target) only**: if asked which method you wish to use to transfer the SD card data:
+ **Do NOT** choose the "Low-Capacity microSD Card Transfer" or minimal option (option 2), it will only transfer tickets and likely will not transfer the DSiWare save.
+ Fast Method: If you have the ability to move the data from the SD card (source) to the microSD card (target), when prompted use the "PC-Based Transfer" option (option 3).
+ Slowest Method: If you don't have the ability to move the data on a PC use the **full** "Wireless Transfer" option (option 1).
1. Go to [this link](http://en-americas-support.nintendo.com/app/answers/detail/a_id/227/) and follow Nintendo's official instructions for System Transferring from one system to another while keeping in mind what you just read
#### Section IV - Restoring the source 3DS
1. On **the source 3DS**, complete initial setup
1. Do one of the following
+ Do the rest of the sections and then the full guide on **the target 3DS**, then wait one week *(do not restore your NAND backup before system transferring)*, then System Transfer from **the target 3DS** back to **the source 3DS** *(remember you cannot transfer back from a New 3DS or New 2DS to an Old 3DS or Old 2DS)*
+ Call Nintendo and tell them you no longer have access to the device that your NNID is linked to (which is **the target 3DS** in this case), and would like it linked to a different device (which is **the source 3DS** in this case)
+ You can also just [remove the NNID](godmode9-usage#removing-an-nnid-without-formatting-your-device) from **the source 3DS** if you'd prefer it remain on **the target 3DS**
