DOCS: Change kernel edit

Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>

Writerside/cfg/google.head.html

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Writerside/d.tree

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     <toc-element toc-title="U-Boot">
     </toc-element>
     <toc-element toc-title="Odroid">
+        <toc-element topic="Change-kernel-version.md"/>
     </toc-element>
+    <toc-element topic="Use-ODROID-STAMPER.md"/>
     <toc-element toc-title="About">
     </toc-element>
 </instance-profile>

Writerside/topics/Change-kernel-version.md

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+# Change kernel version
+
+Some features may be limited depending on the kernel version.
+Need to change the kernel version, use the method below.
+
+## Install kernel from package server
+
+Below is an example of changing to kernel version 6.1.0.
+
+```Bash
+sudo apt update
+sudo apt install linux-image-6.1.0-odroid-arm64
+sudo flash-kernel --force 6.1.0-odroid-arm64
+```
+
+You can Find a kernel list in apt.
+```Bash
+sudo apt update
+apt search odroid-arm64
+```
+
+```Plain Text
+...
+
+linux-image-4.9.277-beta86-odroid-arm64/stable 4.9.277-202204180200~focal arm64
+  Linux 4.9 for ODROID (64-bit ARMv8 machines)
+
+linux-image-5.10.0-rt-odroid-arm64/stable 5.10.18-202202211652~focal arm64
+  Linux 5.10 for 64-bit ARMv8 machines
+
+linux-image-5.11.0-odroid-arm64/stable 5.11.18-202203152140~focal arm64
+  Linux 5.11 for 64-bit ARMv8 machines
+
+linux-image-5.13.0-odroid-arm64/stable,now 5.13.16-202207222133~focal arm64 [installed,automatic]
+  Linux 5.13 for 64-bit ARMv8 machines
+
+linux-image-5.14.0-odroid-arm64/stable 5.14.18-202202091916~focal arm64
+  Linux 5.14 for 64-bit ARMv8 machines
+
+linux-image-5.15.0-odroid-arm64/stable 5.15.167-202411041835 arm64
+  Linux 5.15 for 64-bit ARMv8 machines
+
+...
+```
+
+## View an installed kernel list
+Use `linux-version` command, you can see list of installed kernel list.
+```Bash
+linux-version list
+5.9.0-odroid-arm64
+5.9.15-odroid-arm64
+6.1.0-odroid-arm64
+```
+
+## Change kernel
+Use `flask-kernel`.
+```Bash
+sudo flash-kernel --force 6.1.0-odroid-arm64
+```

Writerside/topics/Use-ODROID-STAMPER.md

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+# Use ODROID-STAMPER
+
+[`odroid-stamper`](https://github.com/tobetter/odroid-stamper) is Odroid Image Generation Tool.
+
+## Basic usage
+```Bash
+sudo apt install git wget dialog pv lynx qemu-user-static\
+ dialog rsync squashfs-tools uuid-runtime
+ 
+git clone https://github.com/tobetter/odroid-stamper.git
+cd odroid-stamper
+export ODROID_STAMPER_CHECKOUT=$PWD
+sudo -E ./odroid-stamper
+```
+
+```Plain Text
+ ODROID-STAMPER
+┌───────────────────────Custom Ubuntu Recipe─────────────────────────┐
+│ Please customize the installation.                                 │
+│ ┌────────────────────────────────────────────────────────────────┐ │
+│ │                  0  Target ()                                  │ │
+│ │                  1  Board ()                                   │ │
+│ │                  2  Distro (focal)                             │ │
+│ │                  3  Flavour (server)                           │ │
+│ │                  4  Default user                               │ │
+│ │                  5  Password of default user                   │ │
+│ └────────────────────────────────────────────────────────────────┘ │
+├────────────────────────────────────────────────────────────────────┤
+│             <  OK  >       < Done >       <Cancel>                 │
+└────────────────────────────────────────────────────────────────────┘
+```
+Once you select the board and other settings you want, the image will be built.
+
+## In the command line
+```Bash
+$ ./odroid-stamper --help
+Usage: odroid-stamper [--help] [--output=<path>] [--live]
+
+    --help: this help message
+    --output=<path>: output directory for image files.
+    --iso: build target OS image as ISO format.
+    --live: enforce to build live boot system image.
+    --compress: compress the final OS image using 'xz'.
+    --keep-builddir: prevent removing temporary directory
+                     after building an image.
+    --kernel: kernel package name to use
+    --linuxfactory: alternative server IP address of 'ppa.linuxfactory.or.kr'
+
+```
+
+You can use it from the command line as below.
+```Bash
+export ODROID_STAMPER_CHECKOUT=$PWD
+sudo -E ./odroid-stamper --compress --board=odroidm2 --distro=focal\
+ --flavour=server --username=odroid --password=odroid
+```
+
+## Use custom
+If you want to add the packages you want during odroid-stamper operation, Use custom directory.
+
+For example, if you want build `custom/npu` image, use command below.
+```Bash
+export ODROID_STAMPER_CHECKOUT=$PWD
+sudo -E ./odroid-stamper --custom=npu
+```
+
+Custom/npu is structured as follows.
+
+- config
+- fixups
+- overlay
+- packages
+
+### config
+`config` Defines the default settings for the image.
+```Plain Text
+BOARD=odroidm1
+ARCH=arm64
+DISTRO=focal
+FLAVOUR=gnome-desktop
+DEFAULT_USER=odroid
+DEFAULT_PASSWD=odroid
+ALLOW_ROOT_LOGIN=false
+```
+You can override it on the command line.
+
+```Bash
+export ODROID_STAMPER_CHECKOUT=$PWD
+sudo -E ./odroid-stamper --custom=npu --board=odroidm2 --distro=noble
+```
+
+### package
+`package` is a list of packages to be installed during image generation.
+
+```Plain Text
+cmake
+g++
+git
+libopencv-dev
+librga-dev
+python3-dev
+python3-pip
+python3-venv
+python3.9
+python3.9-dev
+python3.9-venv
+```
+
+### fixup
+The script in the `fixup` directory is executed during image generation.
+It also runs the fixup script located in the `custom/npu/fixup` directory.
+
+### overlay
+The file to add based on the `/` path.
+`custom/etc/udev/rules.d/99-odroid-video.rules` file will be copied in `/etc/udev/rules.d/99-odroid-video.rules`
+