browserhax: fallback to MSET9 if DS mode is not working

Some devices run into a specific error on exploits that make use of
kernelhaxcode_3ds:
- PrepareArm9ForTwl returned error c8804631!

This was traced down to the agbhax exploit chain, which is used under
the following conditions:
- NATIVE_FIRM
- 11.4 or newer

However, if the "DS Internet" title is broken or missing, the exploit
will fail.

In these cases, fall back to MSET9, which doesn't have any of the above
issues, at the expense of convenience.

Author: lifehackerhansol

docs/_include/troubleshooting-khc-common.md

@@ -0,0 +1,6 @@
+
+::: details "PrepareArm9ForTwl returned error c8804631!"
+
+There is an issue with the console's DS mode functionality. You should follow [Installing boot9strap (MSET9)](installing-boot9strap-(mset9)) instead.
+
+:::

docs/troubleshooting-ssloth-browser.md

@@ -87,12 +87,6 @@ There may be an issue with your `arm11code.bin` file. Re-download the latest rel
 
 :::
 
-::: details "PrepareArm9ForTwl returned error c8804631!"
-
-Join [Nintendo Homebrew on Discord](https://discord.gg/MWxPgEp) for assistance.
-
-:::
-
 ::: details Failed to mount the SD card!
 
 Back up your data and reformat your SD card as FAT32 with the recommended tool depending on your operating system ([Windows](formatting-sd-(windows)), [macOS](formatting-sd-(mac)), [Linux](formatting-sd-(linux))). MiniTool Partition Wizard and the HP formatting tool (HPUSBDisk) are known to cause issues with 3DS SD cards.
@@ -101,6 +95,8 @@ If this is unsuccessful, try using another SD card.
 
 :::
 
+<!--@include: ./_include/troubleshooting-khc-common.md -->
+
 ## Issues with SafeB9SInstaller
 <!--@include: ./_include/troubleshooting-sb9si-bin.md -->
 <!--@include: ./_include/troubleshooting-sb9si-common.md -->

docs/troubleshooting-super-skaterhax.md

@@ -46,6 +46,8 @@ This likely indicates that you already have custom firmware. You should [check f
 
 :::
 
+<!--@include: ./_include/troubleshooting-khc-common.md -->
+
 ## Issues with SafeB9SInstaller
 <!--@include: ./_include/troubleshooting-sb9si-bin.md -->
 <!--@include: ./_include/troubleshooting-sb9si-common.md -->