Added new methods of troubleshooting (#2203)

- Unable to mount CTRNAND or load the CTRNAND FIRM.
- Booted from CTRNAND via B9S (even if SD is inserted)
- "No accessible data in SD card" (BannerBomb3)
- Turning off parental controls
- No space for NAND backup
- More exception screens solutions (linking wiki)

_pages/en_US/troubleshooting.txt

@@ -118,7 +118,7 @@ If neither of these solutions fixes this problem, then custom firmware may have
 <details>{{ compat | markdownify }}</details>
 
 {% capture compat %}
-<summary><u>DSiWare Management menu does not crash</u></summary>
+<summary><u>DSiWare Management menu displays "No accessible software data."</u></summary>
 
 `F00D43D5.bin` is missing from `Nintendo 3DS` -> `<ID0>` -> `<ID1>` -> `Nintendo DSiWare`. Make sure that `Nintendo DSiWare` is correctly spelled and spaced. Uppercase/lowercase does not matter.
 {% endcapture %}
@@ -453,6 +453,24 @@ You did not copy the `gm9` folder from the GodMode9 `.zip` to the root of your S
 {% endcapture %}
 <details>{{ compat | markdownify }}</details>
 
+{% capture compat %}
+<summary><u>"Backup failed" or "Error: Could not open directory" when attempting a NAND backup</u></summary>
+Make sure you have at least 1.3GB available in your SD card. If you don't have enough space, follow these steps:
+1. Power off your console
+1. Remove the SD card and insert it into your computer
+1. Copy the `Nintendo 3DS` folder from the root of your SD card to your computer
+1. Delete the Nintendo 3DS folder from the SD card
+1. Power off your console, hold START and power on still holding START to boot on GodMode9
+1. Perform a [NAND Backup](godmode9-usage#creating-a-nand-backup)
+1. Copy the files in `gm9/out` on your SD to a safe location on your computer
+1. Delete the `<date>_<serialnumber>_sysnand_##.bin` and `<date>_<serialnumber>_sysnand_##.bin.sha` files from the SD card, keeping essential.exefs in `/gm9/out/`
+1. Copy the `Nintendo 3DS` folder from your computer to the root of your SD card
+1. Delete the `Nintendo 3DS` folder from your computer
+
+If you have enough space on your SD card, your SD might be corrupted or faulty. Check your SD card for any errors by following the guide according to your system: [Windows](h2testw-(windows), [Linux](f3-(linux)), [macOS](f3xswift-(mac)).
+{% endcapture %}
+<details>{{ compat | markdownify }}</details>
+
 ---
 
 ## Boot issues on devices with custom firmware
@@ -505,6 +523,20 @@ The steps below can be attempted in any order, but are listed from least to most
 {% endcapture %}
 <details>{{ compat | markdownify }}</details>
 
+{% capture compat %}
+<summary><u>My device does not show any of my apps on the HOME Menu</u></summary>
+
+This could be caused by various reasons, but mostly because your SD card is not being read by the system.
+You can check if your SD is not being read by holding SELECT on boot and checking the yellow text on the bottom screen; if it says "Booted from CTRNAND via B9S", then your system is booting from the internal memory and not from the SD card.
+Attempt the steps below, which are listed from easiest to hardest:
+1. Power off your device, remove the SD card, re-insert it, then power on your device
+1. Power off your device, remove the SD card, insert it on your PC, download the latest release of [Luma3DS](https://github.com/LumaTeam/Luma3DS/releases/latest), extract `boot.firm` from the `Luma3DS.zip` and place it on the root of your SD card (replace it if it already exists)
+1. Power off your device, remove the SD card, insert it on your PC and reformat your SD card (this will wipe your SD card data) according to your computer's operating system: [Windows](formatting-sd-(windows)), [macOS](formatting-sd-(mac)), [Linux](formatting-sd-(linux))
+1. Test your SD card for errors by following the guide according to your computer's operating system: [Windows](h2testw-(windows), [Linux](f3-(linux)), [macOS](f3xswift-(mac)). If your SD card is marked as faulty, then you will have to replace your SD card
+1. Your SD card slot may be broken. Join [Nintendo Homebrew on Discord](https://discord.gg/MWxPgEp) for further assistance
+{% endcapture %}
+<details>{{ compat | markdownify }}</details>
+
 ### Error message on boot
 
 {% capture compat %}
@@ -514,6 +546,12 @@ Your Luma3DS version is outdated. Download the latest release of [Luma3DS](https
 {% endcapture %}
 <details>{{ compat | markdownify }}</details>
 
+{% capture compat %}
+<summary><u>"Unable to mount CTRNAND or load the CTRNAND FIRM. Please use an external one."</u></summary>
+There are a number of reasons as to why this could be happening. In any case, this error can usually be fixed by following the [CTRTransfer](ctrtransfer) guide.
+{% endcapture %}
+<details>{{ compat | markdownify }}</details>
+
 {% capture compat %}
 <summary><u>"An error has occurred. Hold down the POWER button to turn off the power..."</u></summary>
 
@@ -525,6 +563,14 @@ ARM11 exception handlers are disabled, or custom firmware is not installed. Try
 {% endcapture %}
 <details>{{ compat | markdownify }}</details>
 
+{% capture compat %}
+<summary><u>Exception screen when booting/loading an application</u></summary>
+
+Look for your exception screen in [this page](https://wiki.hacks.guide/wiki/3DS:Error_screens/Luma3DS_exception_screen).
+If you weren't able to find your error or the instructions didn't work, join [Nintendo Homebrew on Discord](https://discord.gg/MWxPgEp) for further assistance.
+{% endcapture %}
+<details>{{ compat | markdownify }}</details>
+
 {% capture compat %}
 <summary><u>Blue "BOOTROM ERROR" screen</u></summary>
 
@@ -609,3 +655,18 @@ This can occur after a CTRTransfer or region change on Old 3DS / 2DS. You will n
 {% endcapture %}
 <details>{{ compat | markdownify }}</details>
 
+{% capture compat %}
+<summary><u>Turning off Parental Controls</u></summary>
+
+You can disable the Parental Controls feature by going to System Settings -> Parental Controls and inserting the PIN, then pressing "Clear Settings", then "Delete" to remove it.
+However, if you do not know the PIN and therefore cannot access the device's settings, you will need to disable it. In order to do this, you need to obtain your device's master key (mkey):
+1. Go to [this website](https://mkey.eiphax.tech/)
+1. Fill the following boxes with the information:
++ Device Type: Select "3DS" (the same applies if you are using a 2DS, New 3DS (XL/LL) or New 2DS (XL/LL))
++ System Date: The day and month your console's clock is set to
++ Inquiry Number: Can be obtained by pressing "Forgot PIN" then "I Forgot" in the Parental Controls screen
+1. After you have obtained your mkey, press OK on the screen you have obtained your Inquiry Number, then input the master key
+1. Press "Clear Settings", then "Delete" to remove all Parental Controls data
+{% endcapture %}
+<details>{{ compat | markdownify }}</details>
+