Tutorial How to compile and install arm9loaderhax

lefthandsword

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This guide is probably obsolete, use this instead. Just drag your otp.bin to your browser window and it will compile it for you, I'm leaving the original guide below for those who likes to DIY.

Original post:

Hopefully this guide should silence the whiners:P

Before we begin I have to say this is my very first guide that I made from my experience and information from other Temp members, and English isn't my primary language so I might make mistakes. If you find any just tell me and I'll try my best to correct them. (The screenshot in the spoiler was taken in OS X with wineskin because I'm lazy, this guide is for Windows only)

So you just dumped your OTP and wondering how do you compile A9LH for your 3DS? Here's a guide to instruct you how to compile and install the payload on your device. This guide assumes you know the basics of 3DS homebrew and Windows command prompt,and just stay away from this if you don't - menuhax is good enough for most people IMO. (I am serious)

DISCLAIMER: Any modifications to your 3DS are done at your own risk. I am not responsible for any bricks that may occur during this process (use your common sense and read the guide carefully)

0. Requirements:
1. Preparation
  1. If you have an existing install of Python 3.x/32-bit 2.7.x, remove it first
  2. Install Python 2.7 x86-64, make sure you install "add python.exe to patch" sub feature during installation (it's not set by default)
    python_windows_installation_customize_python.jpg
  3. Install PyCrypto
  4. Install devkitPro 1.6.0, you will be be presented with tons of packages but the only ones we're interested are under devkitARM, simply uncheck everything else.
    tutorial copy.png
  5. Install Make, you should download the file with md5:8ae51379d1f3eef8360df4e674f17d6d
2. Compile A9LH
  1. Extract the A9LH source to any directory
  2. Copy your OTP.bin to the data_input folder and overwrite the one that's included with the zip file
  3. Open a CMD window (Shift+right click on the explorer window or cd into it manually)at the root directory of the source files, type "make" (without quotes) and enter.
  4. Wait for a minute or so, a data_output folder will appear and there should be no errors
  5. Copy the arm9loaderhax.3dsx file from the newly created folder to /3ds/ on your SD card (the installer is built specifically for the 3DS you dumped its OTP from, if you want to install A9LH on more than one 3DS you will to recompile the payload with their respective OTP.bin files)
3.1 Installing A9LH
  1. Ensure you have a dump of your SysNAND before you continue
  2. Enter hblauncher using an entry point of your choice
  3. Run arm9loaderhax.3dsx (see below if you're stuck on "exploiting arm9")
  4. The payload will be installed to your NAND and your 3DS will then be rebooted to black screens afterwards. Don't panic, turn off your 3DS
3.2 "exploiting arm9" workaround (required for n3DS, not sure about o3DS)
  1. Download and copy the miniPasta 3dsx to your SD card
  2. Run miniPasta, the screen will turn black for a few seconds and you will be kicked back to home menu afterwards
  3. Re-enter hblauncher and try running the A9LH installer again
4. Testing the payload + conclusion
There's a test binary (forgot who made it) that will power off your 3DS upon pressing any buttons except ZL, ZR or home. Simply copy it to the root of your SD card, wait for a couple seconds and press a button. If your 3DS powers off, then A9LH is successfully installed and woking correctly (congrats:grog:). If your 3DS powers off the moment you turn it on, check if the file is named "arm9loaderhax.bin" and placed in the root directory, if it power led stay on and won't respond to button pressed then your 3DS is probably bricked :(
If you want a cold boot (permanent) CFW (the reason to get A9LH in the first place), check out @Aurora Wright's ReiNand fork. She already documented it very well so I'm not going through it in this thread

FAQ
Q: I'm getting "python: command not found"
A: Make sure you select "add python.exe to path" during installation, alternatively you can set the PATH variable manually by entering this in cmd (Thanks @Kever)
Code:
set PATH=C:\Python27;%PATH%
Q: How to uninstall A9LH?[/SIZE][/SIZE]
A: Restore a sysNAND backup made before running arm9loaderhax.3dsx
 
Last edited by lefthandsword,

jon2491

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Followed your tutorial, and when I make it prints stuffs and at the end:
make[1]: Leaving directory `/c/Users/xxx/Desktop/compilar/arm9loaderhax-master/payload_stage1'
8+1 records in
8+1 records out
4168 bytes (4.2 kB) copied, 0.004 seconds, 1.0 MB/s
FIRM0 done!
FIRM1 done!
make: python: Command not found
make: *** [sector] Error 127

firm0.bin and firm1.bin are created but I guess something isn't right.
 

shaneod

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Followed your tutorial, and when I make it prints stuffs and at the end:
make[1]: Leaving directory `/c/Users/xxx/Desktop/compilar/arm9loaderhax-master/payload_stage1'
8+1 records in
8+1 records out
4168 bytes (4.2 kB) copied, 0.004 seconds, 1.0 MB/s
FIRM0 done!
FIRM1 done!
make: python: Command not found
make: *** [sector] Error 127

firm0.bin and firm1.bin are created but I guess something isn't right.
Did you add C:/Python27 to your PATH?
 

solsolis

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I'm trying to compile this on a windows box, but its giving me trouble. I'm not really familiar with windows at all so... I'm completely at loss with this compile error.
Code:
Traceback (most recent call last):
  File "common/sector_generator.py", line 1, in <module>
    from Crypto.Cipher import AES
  File "c:\Python27\lib\site-packages\Crypto\Cipher\AES.py", line 50, in <module
>
    from Crypto.Cipher import _AES
ImportError: DLL load failed: %1 is not a valid Win32 application.
make: *** [sector] Error 1

Anyone got some insight on this?
 

lefthandsword

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I'm trying to compile this on a windows box, but its giving me trouble. I'm not really familiar with windows at all so... I'm completely at loss with this compile error.
Code:
Traceback (most recent call last):
  File "common/sector_generator.py", line 1, in <module>
    from Crypto.Cipher import AES
  File "c:\Python27\lib\site-packages\Crypto\Cipher\AES.py", line 50, in <module
>
    from Crypto.Cipher import _AES
ImportError: DLL load failed: %1 is not a valid Win32 application.
make: *** [sector] Error 1

Anyone got some insight on this?
iirc PyCrypto requires VC redist 2008 and/or 2010 (not 100% sure since I'm writing this guide with Win10) installed in order to work properly.

Someone else may have opinions better than mine
 

solsolis

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iirc PyCrypto requires VC redist 2008 and/or 2010 (not 100% sure since I'm writing this guide with Win10) installed in order to work properly.

Someone else may have opinions better than mine
Thanks, I'll check into that.

EDIT:
Seems I already had 2010 installed and installing 2008 didn't fix anything.
 
Last edited by solsolis,
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lefthandsword

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Come on guys. Compile it yourselves, it's fun to do.
That's why I wrote this tutorial by collecting information shattered around GBATemp plus my own experiment then group them into one convenient thread, it's much safer this way compared to relying on someone else to do it for you because you can ensure the payload is compiled correctly for your own 3DS.
 
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Mazamin

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Good tutorial! Now we can say that the 3ds is more hacked than the psp. Anyway, if an update comes out, will I be able to install it without losing the exploit on the firm?
 

VaiCorinthians

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That's why I wrote this tutorial by collecting information shattered around GBATemp plus my own experiment then group them into one convenient thread, it's much safer this way compared to relying on someone else to do it for you because you can ensure the payload is compiled correctly for your own 3DS.
learn is better. I needed help to compile it (somebody compiled it to me), but I'm trying compile another one, it myself.. to (maybe) help any friends.. :ha:

(I'm getting error with "make: python: Comand not found") later I will try solve it..

erro python comand.png
 
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    Skelletonike @ Skelletonike: i'll stick to jerry's durability test https://www.youtube.com/watch?v=66xbBtnxb5k