Updating A9LH

Last Update: 3 Nov 2016

The actual installation of arm9loaderhax itself consists of payload files installed into the NFIRM partitions on your device’s NAND chip, which is soldered to the motherboard itself. These payloads are updated rarely and only really serve the purpose of launching arm9loaderhax.bin from the SD Card, which is, in our case, Luma3DS.

If you do not know what version of arm9loaderhax you are running, just install the latest version with these steps. Installing the latest version while already on the latest version will have no effect.

If you have a PIN set on Luma, you must temporarily turn it off to do these steps. You can re-enable the PIN after the update.

If you are using a payload that does not init the screen on its own (such as Bootanim9), you will need to rename it to arm9loaderhax_si.bin instead of arm9loaderhax.bin

The versions of data_input only refer to revisions of the .zip to be compatible with different installer versions, and are not the same thing as updating a9lh itself (the payload files). They make no practical difference beyond the installation process.

These steps will also update your various payloads and the AES key database.

What you need

Instructions

For all of these instructions, OVERWRITE any existing files on your SD card.

Section I - Prep work
  1. Delete any existing aeskeydb.bin from the root of your SD card
  2. Delete the a9lh folder from the root of your SD card if it exists
  3. Copy aeskeydb.bin to the /files9/ folder on your SD card
  4. Copy Hourglass9.bin from the Hourglass9 .zip to the /luma/payloads/ folder on your SD card and rename Hourglass9.bin to start_Hourglass9.bin
  5. Copy arm9loaderhax.bin from the SafeA9LHInstaller .zip to the /luma/payloads/ folder on your SD card
  6. Rename arm9loaderhax.bin in /luma/payloads/ to down_safea9lhinstaller.bin
  7. Copy the a9lh folder from data_input .zip to the root of your SD Card
  8. Copy the contents of the arm9loaderhax .7z to a9lh folder on your SD card
  9. Copy arm9loaderhax.bin from the Luma3DS .zip to the root of your SD card, overwrite existing files
  10. Reinsert your SD card into your 3DS
Section II - Payload update
  1. Reinsert your SD card into your 3DS and boot holding (Down)
  2. Press (Select) to update arm9loaderhax
  3. Power off the device and put your SD card back in your computer
  4. Delete the a9lh folder from the root of your SD card
  5. Delete down_safea9lhinstaller.bin from /luma/payloads/
Section III - Configuring Luma3DS
  1. Reinsert your SD card into your 3DS and boot holding (Select)
  2. Use the (A) button and the D-Pad to turn on the following:
    • “Autoboot SysNAND”
    • “Use SysNAND FIRM if booting with R”
    • “Show NAND or user string in System Settings”
  3. If you are using a New 3DS, you should also enable the following:
    • “New 3DS CPU” to “Clock+L2(x)”
    • This will increase the framerate of many games, but may cause instability in others
    • If some games do not work properly, disable this option and try again
  4. Press (Start) to save and reboot
Section IV - CTRNAND Luma3DS
  1. Open FBI
  2. Select “SD”
  3. Navigate to arm9loaderhax.bin, then press (A) on it and select the “Copy” option
  4. Return to the FBI main menu with (B)
  5. Select “CTR NAND”
  6. Select “<current directory>”
  7. Select the “Paste” option, then press (A) to confirm
  8. Exit with the home button
  9. Power off your 3DS and remove the SD card
  10. Boot with the SD card removed while holding (Select)
    • Booting the device at least once with the SD card removed will allow you to configure the CTRNAND based Luma3DS installation
  11. Use the (A) button and the D-Pad to turn on the following:
    • “Show NAND or user string in System Settings”
  12. If you are using a New 3DS, you should also enable the following:
    • “New 3DS CPU” to “Clock+L2(x)”
    • This will increase the framerate of many games, but may cause instability in others
    • If some games do not work properly, disable this option and try again
  13. Reinsert your SD card, then press Start to save and reboot!
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