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. `[0:] SDCARD`로 이동해 주세요.
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. SysNAND (lvl1) 쓰기 잠금을 풀기 위해 주어진 키 조합을 입력해 주세요.
1. (A)를 눌러 진행해 주세요.
1. Press (B) to decline relocking write permissions if prompted
1. Press (Y) to paste `public.sav`
1. "Copy path(s)"를 선택해 주세요.
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**
