Guide_3DS/_pages/2.1.0-ctrtransfer.md

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2.1.0 ctrtransfer	/2.1.0-ctrtransfer.html

This section is only required for Old 3DS or 2DS. If you are on a New 3DS, skip to Installing arm9loaderhax. {: .notice--primary}

If you downgrade to 2.1.0 on a 2DS and left Wireless Communication off, you can re-enable the wireless by removing the battery for several seconds then booting back up. {: .notice--info}

Your device may not show your installed games after the ctrtransfer. This is due to the tickets being removed by the transfer, which is why you back them up. They will be restored at the end of the guide. {: .notice--info}

Never format a 2DS while on a version <6.0.0 or you will be unable to complete initial setup and will BRICK! {: .notice--danger}

Overview of steps

In this section, we will be flashing your console's CTRNAND partition to 2.1.0 in order to take advantage of an oversight in 2.1.0 for the purpose of extracting the OTP unique to your console. This OTP file is required to install arm9loaderhax, and cannot be shared with other consoles.

This is accomplished by installing a premade ctrtransfer image containing 2.1.0, copying your console specific files (such as moveable.sed and SecureInfo_A) to it, then fixing the title databases.

The OTP is a requirement to use arm9loaderhax on the Old 3DS, while the New 3DS uses an exploit in the way keys are encrypted on the device in order to install arm9loaderhax without the OTP.

What you need

• You will need to have booted into Decrypt9
• The 2.1.0 ctrtransfer image for your device and region
  (if your device is not from one of these regions, just pick one):
  • Old 3DS or 2DS 2.1.0 - EUR - ctrtransfer -
  • Old 3DS or 2DS 2.1.0 - JPN - ctrtransfer -
  • Old 3DS or 2DS 2.1.0 - USA - ctrtransfer -

Instructions

Section I - Prep work

You should be in Decrypt9 for these steps.

1. Press (Select) on the main menu to eject your SD card, then put it in your computer
2. Copy the 2.1.0 .bin and .bin.sha from the ctrtransfer zip to the /files9/ folder on your SD card
3. Reinsert your SD card into your 3DS
4. Press (B) to get to the Decrypt9 main menu

Section II - Backup tickets

6. Go to "Ticket/Titlekey Options", then select "Ticket Dump (SysNAND)"
7. Press (Select) to eject your SD card, then put it in your computer
8. Delete all .tik files in the /files9/ folder that do not start with "00-"
9. Leave all the .tik files that do start with "00-" in the folder

• If none start with "00-", then just continue.

10. Reinsert your SD card into your 3DS, then press (B)

Section III - ctrtransfer

4. Go to "SysNAND Options", then "CTRNAND Transfer", then "Auto CTRNAND Transfer"
5. Select the 2.1.0 ctrtransfer image when prompted by pressing (A)
6. If you do not already have a NAND backup, backup SysNAND to NANDmin.bin when prompted by pressing (A)
7. Allow the transfer process to proceed automatically, this may take some time
8. Once the transfer is complete, press (B) to go back
9. Press (Select) to eject your SD card
10. Delete the 2.1.0 ctrtransfer image .bin and .bin.sha from the /files9/ folder on your SD card
11. Clear Home Menu's extdata by navigating to the following folder on your SD card: /Nintendo 3DS/(32 Character ID)/(32 Character ID)/extdata/00000000/
    • EUR Region: Delete 00000098
    • JPN Region: Delete 00000082
    • USA Region: Delete 0000008f
    • CHN Region: Delete 000000A1
    • KOR Region: Delete 000000A9
    • TWN Region: Delete 000000B1
12. Reinsert your SD card into your 3DS
13. Press (Start) to reboot

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(Screen distortions or discolorations are normal for some devices while on 2.1.0, they will go away once you restore your backup) {: .notice--info}

Continue to Installing arm9loaderhax. {: .notice--primary}