docs: README and install process for debug.ini and backup

- Link DEBUG_INI.md; describe clean install backup (dbi.config, prod.keys)
- Update INSTALLATION_PROCESS backup/restore steps

Made-with: Cursor

INSTALLATION_PROCESS.md

@@ -2,6 +2,8 @@
 
 This document provides a detailed, step-by-step breakdown of everything that is checked and done during the OmniNX installation/update process.
 
+For **optional debug step skips** (`sd:/config/omninx/debug.ini`), see **[DEBUG_INI.md](DEBUG_INI.md)**.
+
 ## Overview
 
 The OmniNX Installer Payload operates in two modes:
@@ -305,17 +307,12 @@ channel_pack={variant}        # Same as current_pack
 #### 32. Create Backup Directory
 - Creates `sd:/temp_backup/` directory
 
-#### 33. Backup DBI
-- **Source**: `sd:/switch/DBI/`
-- **Destination**: `sd:/temp_backup/DBI/`
-- Only if source exists
+#### 33. Backup DBI settings
+- **Source**: `sd:/switch/DBI/dbi.config` (file only, not the whole `DBI` tree)
+- **Destination**: `sd:/temp_backup/dbi.config`
+- Only if the source file exists
 
-#### 34. Backup Tinfoil
-- **Source**: `sd:/switch/tinfoil/`
-- **Destination**: `sd:/temp_backup/tinfoil/`
-- Only if source exists
-
-#### 35. Backup prod.keys
+#### 34. Backup prod.keys
 - **Source**: `sd:/switch/prod.keys`
 - **Destination**: `sd:/temp_backup/prod.keys`
 - Only if source exists
@@ -325,22 +322,22 @@ channel_pack={variant}        # Same as current_pack
 ### Step 2: Wipe Directories
 **Location**: `install.c:543-602`
 
-#### 36. Delete Entire Directories
+#### 35. Delete Entire Directories
 Recursively deletes (if they exist):
 - `sd:/atmosphere/` (entire directory tree)
 - `sd:/bootloader/` (entire directory tree)
 - `sd:/config/` (entire directory tree)
 - `sd:/switch/` (entire directory tree)
 
-#### 37. Delete Root Files
+#### 36. Delete Root Files
 - Uses same deletion list as update mode (Step 19)
 - Deletes `boot.dat`, `boot.ini`, `exosphere.ini`, etc.
 
-#### 38. Delete Miscellaneous Items
+#### 37. Delete Miscellaneous Items
 - Uses same deletion lists as update mode (Steps 20-21)
 - Deletes `argon/`, `games/`, `SaltySD/`, etc.
 
-#### 39. Recreate Switch Directory
+#### 38. Recreate Switch Directory
 - Creates empty `sd:/switch/` directory for restoration
 
 ---
@@ -348,27 +345,17 @@ Recursively deletes (if they exist):
 ### Step 3: Restore User Data
 **Location**: `backup.c:55-95`
 
-#### 40. Restore DBI
-- **Source**: `sd:/temp_backup/DBI/`
-- **Destination**: `sd:/switch/DBI/`
-- **Cleanup**: After restoration, deletes old DBI NRO files:
-  - `sd:/switch/DBI/DBI_810_EN.nro`
-  - `sd:/switch/DBI/DBI_810_DE.nro`
-  - `sd:/switch/DBI/DBI_845_EN.nro`
-  - `sd:/switch/DBI/DBI_845_DE.nro`
-  - `sd:/switch/DBI/DBI.nro`
+#### 39. Restore DBI settings
+- **Source**: `sd:/temp_backup/dbi.config`
+- **Destination**: `sd:/switch/DBI/dbi.config` (creates `sd:/switch/DBI/` if needed)
+- No longer copies the full `DBI` folder; old `.nro` cleanup is unnecessary
 
-#### 41. Restore Tinfoil
-- **Source**: `sd:/temp_backup/tinfoil/`
-- **Destination**: `sd:/switch/tinfoil/`
-- **Cleanup**: After restoration, deletes `sd:/switch/tinfoil/tinfoil.nro`
-
-#### 42. Restore prod.keys
+#### 40. Restore prod.keys
 - **Source**: `sd:/temp_backup/prod.keys`
 - **Destination**: `sd:/switch/prod.keys`
 
-#### 43. Cleanup Backup Directory
-**Location**: `backup.c:98-103`
+#### 41. Cleanup Backup Directory
+**Location**: `backup.c` (`cleanup_backup`)
 - Deletes `sd:/temp_backup/` directory after restoration
 
 ---