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+# Prepare
+
+## In DevTerm or uConsole
+
+uncomment deb-src in /etc/apt/source.list ,and run 'sudo apt update'
+
+```
+sudo apt install git build-essential libasound2-dev libudev-dev
+sudo apt install -y libegl-mesa0
+sudo apt-get build-dep retroarch
+```
+
+```
+git clone https://github.com/libretro/RetroArch.git retroarch 
+```
+
+```
+cd retroarch
+./configure --disable-videocore --disable-vg --enable-alsa --enable-udev --disable-opengl1
+make
+sudo make install
+```
+
+```
+mkdir -p /usr/local/bin 2>/dev/null || /bin/true
+mkdir -p /etc 2>/dev/null || /bin/true
+mkdir -p /usr/local/share/applications 2>/dev/null || /bin/true
+mkdir -p /usr/local/share/metainfo 2>/dev/null || /bin/true
+mkdir -p /usr/local/share/doc/retroarch 2>/dev/null || /bin/true
+mkdir -p /usr/local/share/man/man6 2>/dev/null || /bin/true
+mkdir -p /usr/local/share/pixmaps 2>/dev/null || /bin/true
+cp retroarch /usr/local/bin
+cp tools/cg2glsl.py /usr/local/bin/retroarch-cg2glsl
+cp retroarch.cfg /etc
+cp com.libretro.RetroArch.appdata.xml /usr/local/share/metainfo
+cp retroarch.desktop /usr/local/share/applications
+cp docs/retroarch.6 /usr/local/share/man/man6
+cp docs/retroarch-cg2glsl.6 /usr/local/share/man/man6
+cp media/retroarch.svg /usr/local/share/pixmaps
+cp COPYING /usr/local/share/doc/retroarch
+cp README.md /usr/local/share/doc/retroarch
+
+
+chmod 755 /usr/local/bin/retroarch
+chmod 755 /usr/local/bin/retroarch-cg2glsl
+chmod 644 /etc/retroarch.cfg
+chmod 644 /usr/local/share/applications/retroarch.desktop
+chmod 644 /usr/local/share/metainfo/com.libretro.RetroArch.appdata.xml
+chmod 644 /usr/local/share/man/man6/retroarch.6
+chmod 644 /usr/local/share/man/man6/retroarch-cg2glsl.6
+chmod 644 /usr/local/share/pixmaps/retroarch.svg
+
+```
+
+# Modify the RetroArch configuration and download the corresponding core file, taking the Nestopia simulator as an example
+```
+sudo apt-get install wget unzip -y 
+sed -i '/^libretro_directory/c\libretro_directory = "~/.config/retroarch/cores"' ~/.config/retroarch/retroarch.cfg
+wget https://github.com/christianhaitian/retroarch-cores/raw/master/aarch64/nestopia_libretro.so.zip && unzip nestopia_libretro.so.zip -d ~/.config/retroarch/cores && rm nestopia_libretro.so.zip 
+```
+
+# apt upgrade stock retroarch for DevTerm / uConsole
+```
+sudo apt update 
+sudo apt install -y retroarch-cpi-cm4
+```
+Current retroarch
+Version: 1.17.0 (Git 076d3cc91f)
+