diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 66d52b4..4b5f2ad 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -17,8 +17,8 @@
 ``` shell
 # ex) Current Make version is 3.16.3
 cd ~
-wget https://github.com/Kitware/CMake/releases/download/v3.16.3/cmake-3.16.3-linux-x86_64.tar.gz
-tar -xzvf cmake-3.16.3-linux-x86_64.tar.gz
+wget https://github.com/Kitware/CMake/releases/download/v3.16.3/cmake-3.16.3-Linux-x86_64.tar.gz
+tar -xzvf cmake-3.16.3-Linux-x86_64.tar.gz
 
 # Backup previous CMake just in case
 sudo mv /usr/bin/cmake /usr/bin/cmake.old
@@ -26,9 +26,9 @@ sudo mv /usr/bin/ctest /usr/bin/ctest.old
 sudo mv /usr/bin/cpack /usr/bin/cpack.old
 
 # Make softlink to /usr/bin
-sudo ln -s ${HOME}/cmake-3.16.3-linux-x86_64/bin/cmake /usr/bin/cmake
-sudo ln -s ${HOME}/cmake-3.16.3-linux-x86_64/bin/ctest /usr/bin/ctest
-sudo ln -s ${HOME}/cmake-3.16.3-linux-x86_64/bin/cpack /usr/bin/cpack
+sudo ln -s ${HOME}/cmake-3.16.3-Linux-x86_64/bin/cmake /usr/bin/cmake
+sudo ln -s ${HOME}/cmake-3.16.3-Linux-x86_64/bin/ctest /usr/bin/ctest
+sudo ln -s ${HOME}/cmake-3.16.3-Linux-x86_64/bin/cpack /usr/bin/cpack
 ```
 
 ## 2.1. Formating
diff --git a/README.md b/README.md
index 3e1d93b..24cc1aa 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ SLAMBOX SDK allows developers to effortlessly integrate and control SLAMBOX func
     - How to install:
     ```bash
     git clone https://github.com/google/glog.git -b v0.6.0
+    cd glog
     cmake -S . -B build -G "Unix Makefiles"
     cmake --build build
     sudo cmake --build build --target install
diff --git a/docs/getting_started/slambox_setting.md b/docs/getting_started/slambox_setting.md
index 0f49d8e..971900b 100644
--- a/docs/getting_started/slambox_setting.md
+++ b/docs/getting_started/slambox_setting.md
@@ -71,6 +71,10 @@ For your convinience, turn Local echo on by pressing `<Ctrl>+A z e`
 
 Then, start configuration as your needs by following [below section](#SLAMBOXSetting-ConfigureSLAMBOX).
 
+**NOTE** Once you have finished setup process, minicom must be exited in order to continue on next step.
+
+Minicom can be exited by pressing `<Ctrl>+A x` -> `<Enter>`
+
 </details>
 
 <details open>
@@ -82,8 +86,16 @@ Then, start configuration as your needs by following [below section](#SLAMBOXSet
 
     Install the *ComPortMaster* from the [link](http://withrobot.com/data/?mod=document&uid=12)
 
-    ![How to use ComPortMaster](getting_started/slambox_setting/comportmaster.png)
+2. Connect to SLAMBOX serial
+
+    Please follow settings as below screenshot. `Device` name might be different depending on your OS condition.
+
+![How to use ComPortMaster](getting_started/slambox_setting/comportmaster.png)
+
+If you successfully open port, start configuration as your needs by following [below section](#SLAMBOXSetting-ConfigureSLAMBOX).
 
+
+**NOTE** Once you have finished setup process, you must disconnect connection on ComPortMaster to continue on next step.
 </details>
 
 ## Configure SLAMBOX {#SLAMBOXSetting-ConfigureSLAMBOX}
@@ -136,6 +148,9 @@ $SERIAL_ENABLE 1#
 $SERIAL_BAUD 921600#
 ```
 
+**NOTE** If you set both `Serial` and `UDP` communication enabled, pointcloud will only be sent via `UDP` communication.
+
+
 ### SLAMBOX Ethernet Configuration {#SLAMBOXSetting-ConfigureSLAMBOX-SLAMBOXEthernetConfiguration}
 
 - `ETH_ENABLE` with option `0` or `1`. `0` means to disable and `1` means enable this option
@@ -155,6 +170,8 @@ $ETH_PORT 25180#
 $ETH_IP 192.168.1.50#
 ```
 
+**NOTE** If you set both `Serial` and `UDP` communication enabled, pointcloud will only be sent via `UDP` communication.
+
 ### SLAMBOX Mavlink Configuration {#SLAMBOXSetting-ConfigureSLAMBOX-SLAMBOXMavlinkConfiguration}
 
 - `MAVLINK_ENABLE` with option `0` or `1`. `0` means to disable and `1` means enable this option