Homebrew ARM9Loader -- Technical Details and Discussion

[Devastus]

https://gbatemp.net/threads/tutorial-swap-sysnand-and-emunand-arm9loaderhax-only.415724/

This is kind of like what you said, except you don't need to downgrade anything, just swap your NANDs around.

Is the only reason for keeping an emunand just for 9.0Firm dependent homebrew tools? (Decrypt9 OTPHelper etc)

 

[Supster131]

Is the only reason for keeping an emunand just for 9.0Firm dependent homebrew tools? (Decrypt9 OTPHelper etc)

Yes, but now it's not really needed.
You can use all those tools through A9LH (before your system boots).

 

[Devastus]

From the guide

If you already have arm9loaderhax set up to boot your emunand, you will need to remove it. This is because one of the needed tools, decrypt9, can only run from sysnand. Arm9loaderhax will prevent you from entering sysnand at all, so will need to be removed. I did this by restoring a vanilla 9.2 sysnand backup which I took from the console prior to installing arm9loaderhax.

Does this still apply? I can run decrypt9 just fine AuRei patched sysNand

 

[Supster131]

From the guide


Does this still apply? I can run decrypt9 just fine AuRei patched sysNand

Pretty sure that only applied for when A9LH was first being used.

 

[stl25]

Thanks a lot @stl25 . I will try it.

EDIT: It works well. But Decrypt9 is too bright imo . Would you mind to lower the brightness? Is that possible?

EDIT2: I figured out that we don't need "X_bl" to run software that need backlight. Is that true @stl25 ?

@jasonal21, here is a version that sets backlight to the original setting. @Ekaitz is the one to credit with not needing the _bl files to determine which payloads enable backlight.
Glad it works for you. @FIX94 made a great app to load payloads while allowing the user to determine which payloads enable backlight. Myself and @Ekaitz just edited the source to customize it to be more in line with folder structure of AuReiNand by the great @Aurora Wright. The limitation is if you have @FIX94 arm9loaderhax (in which backlight is set to zero) installed and use AuReiNand CFW with splash screens this will not allow you to see the splash screen the way I built this mod. If someone would like another version that will allow the splash screen to be viewed I can make another mod and post here. Take time to visit the AuReiNand and arm9select threads to give props to @Aurora Wright and @FIX94 for there awesome A9LH software.

Edit: Here are both versions (Splash and No Splash). Please note this mod assumes your default payload is AuReiNand named as AuReiNand.bin.

 

[Devastus]

Pretty sure that only applied for when A9LH was first being used.

Sorry to keep bugging you about this, I'm in stage 3 for this guide that you previous posted. When I get to step 4 "Create an empty file on the SD card in the /rei folder called updatedsysnand" I can't get my 3ds to boot directly into updatedsysnand mode. I have ~/aurei/updatedsysnand.txt & ~/aurei/updatedsysnand.bin and it still default boots into emuNAND and holding L gets me into updated sysnand. Any ideas?

 

[Supster131]

Sorry to keep bugging you about this, I'm in stage 3 for this guide that you previous posted. When I get to step 4 "Create an empty file on the SD card in the /rei folder called updatedsysnand" I can't get my 3ds to boot directly into updatedsysnand mode. I have ~/aurei/updatedsysnand.txt & ~/aurei/updatedsysnand.bin and it still default boots into emuNAND and holding L gets me into updated sysnand. Any ideas?

Delete updatedsysnand.bin, you don't need that.
Remove the .txt extension from the updatedsysnand file.

 

[Devastus]

Delete updatedsysnand.bin, you don't need that.
Remove the .txt extension from the updatedsysnand file.

Thanks for the fast response I really appreciate it

 

[Devastus]

So I finished swapping them and everything is setup correctly, using a stopwatch I timed boot from power-button press to first sight of theme display and my time is 11.21 seconds. I did the same for emuNAND while holding L and it was 11.33 seconds. Are there any tips for making booting into sysNAND quicker? Not that it's not already fast compared to non-A9LH but I'm just curious.

 

[Supster131]

So I finished swapping them and everything is setup correctly, using a stopwatch I timed boot from power-button press to first sight of theme display and my time is 11.21 seconds. I did the same for emuNAND while holding L and it was 11.33 seconds. Are there any tips for making booting into sysNAND quicker? Not that it's not already fast compared to non-A9LH but I'm just curious.

Hope for improvements on CFWs.
AureiNAND recently got an update that apparently boots a second quicker than before.

 

[Devastus]

Hope for improvements on CFWs.
AureiNAND recently got an update that apparently boots a second quicker than before.

Ya I'm using AuRei 3.10.7 at the moment. Thanks again for all the help!

 

[fr3quency]

Ya I'm using AuRei 3.10.7 at the moment. Thanks again for all the help!

There is no 3.10.7?[emoji14]I got mindfkd for a sec. The file extension is ".7z", like .zip, .rar etc

 

[Devastus]

There is no 3.10.7?[emoji14]I got mindfkd for a sec. The file extension is ".7z", like .zip, .rar etc

Ya my bad i just hit the download and moved on heh

 

[cocoPika]

This thread is for an in-depth technical review of the ARM9Loader hack.

looks complicated and dangerous

 

[gkoelho]

looks complicated and dangerous

U dont need to read all this if u dont want, just to follow the guide and will have the most needed knowledge to use it.

 

[Krude]

So I finished swapping them and everything is setup correctly, using a stopwatch I timed boot from power-button press to first sight of theme display and my time is 11.21 seconds. I did the same for emuNAND while holding L and it was 11.33 seconds. Are there any tips for making booting into sysNAND quicker? Not that it's not already fast compared to non-A9LH but I'm just curious.

I'm using arm9select (probably the fastest boot selector) and CakesFW autoboot, and it takes me only 9 seconds to boot into emuNAND.

Booting Decrypt9 takes like half a second.

 

[Deleted User]

Thanks guys.

The problem is I'm blind to code . But I'll try to learn to compile it .
For now, I get better use arm9select mod.

 

[Deleted User]

Uncart for a9lh
https://mega.nz/#!SQA0GKqb!3au14JJNgpp2mXDvRsiutmHGCVLcAodjeCAP86Nb0bw

@Shadowtrance Is there a button to make uncart reboot? do we need to hold power button to shutdown? if there's no, would you mind to add this feature?

 

[Shadowtrance]

@Shadowtrance Is there a button to make uncart reboot? do we need to hold power button to shutdown? if there's no, would you mind to add this feature?

There should be an option to shutdown or restart (to do another cart) when it finishes dumping a cart.

 

[Conn0r]

Someone should make a an arm9 program similar to "ulaunchelf" for the PlayStation 2 (basically a file finder that launched apps).