diff --git a/tools/harness-thci/Makefile.am b/tools/harness-thci/Makefile.am
index a11068adc..a9ad21eb4 100644
--- a/tools/harness-thci/Makefile.am
+++ b/tools/harness-thci/Makefile.am
@@ -29,7 +29,7 @@
 include $(abs_top_nlbuild_autotools_dir)/automake/pre.am
 
 EXTRA_DIST              = \
-    ARM.py                \
+    OpenThread.py         \
     README.md             \
     $(NULL)
 
diff --git a/tools/harness-thci/ARM.py b/tools/harness-thci/OpenThread.py
similarity index 99%
rename from tools/harness-thci/ARM.py
rename to tools/harness-thci/OpenThread.py
index 4f053f897..9fa8842e1 100644
--- a/tools/harness-thci/ARM.py
+++ b/tools/harness-thci/OpenThread.py
@@ -28,8 +28,8 @@
 
 '''
 >> Thread Host Controller Interface
->> Device : ARM THCI
->> Class : ARM
+>> Device : OpenThread THCI
+>> Class : OpenThread
 '''
 
 import re
@@ -48,8 +48,8 @@ from Queue import Queue
 linesepx = re.compile(r'\r\n|\n')
 """regex: used to split lines"""
 
-class ARM(IThci):
-    firmware = 'Nov 4 2016 07:24:59' # keep the consistency with ARM firmware style
+class OpenThread(IThci):
+    firmware = 'g7d33184; CC2538; Dec  1 2016 15:43:40'
     UIStatusMsg = ''
     networkDataRequirement = ''      # indicate Thread device requests full or stable network data
     isPowerDown = False              # indicate if Thread device experiences a power down event
@@ -1237,7 +1237,6 @@ class ARM(IThci):
             self.isWhiteListEnabled = False
             self.isBlackListEnabled = False
             self.isActiveCommissioner = False
-            self.firmware = 'Nov 4 2016 07:24:59'
         except Exception, e:
             ModuleHelper.WriteIntoDebugLogger("setDefaultValue() Error: " + str(e))
 
@@ -2410,7 +2409,7 @@ class ARM(IThci):
 
             if xChannelTlv != None:
                 cmd += ' binary '
-                cmd += '000300' + hex(xChannelTlv).lstrip('0x').zfill(4) 
+                cmd += '000300' + hex(xChannelTlv).lstrip('0x').zfill(4)
 
             print cmd
 
@@ -2501,3 +2500,6 @@ class ARM(IThci):
         print '%s call setRouterThresholdValues' % self.port
         self.__setRouterUpgradeThreshold(upgradeThreshold)
         self.__setRouterDowngradeThreshold(downgradeThreshold)
+
+    def setMinDelayTimer(self, iSeconds):
+        print '%s call setMinDelayTimer' % self.port
diff --git a/tools/harness-thci/README.md b/tools/harness-thci/README.md
index 59d9fab6f..c375bb702 100644
--- a/tools/harness-thci/README.md
+++ b/tools/harness-thci/README.md
@@ -4,64 +4,17 @@ OpenThread THCI
 OpenThread THCI(Thread Host Controller Interface) is implemented according
 to the python abstract class template-"IThci" that is provided by GRL. It's
 intented to be called by Thread Test Harness Software to control the reference
-unit behavior.
-
-## Restriction ##
-
-Currently Test Harness Software only supports three kinds of reference unit
-officially: ARM, NXP(Freescale) and SiLabs. We make OpenThread THCI be able
-to interact with Test Harness Software with the aid of the official THCI class
-name of our partner ARM. And we are using TI CC2538DK as a target hardware platform
-for reference unit.
-
-OpenThread THCI works along with Thread Test Harness Software on Windows OS.
+device behavior.
 
 ## Environment Setup ##
 
-1. install or update essential modules `pexpect` and `pexpect_serial` with pip command.
-   current `pexpect_serial` module version is 0.4.4; `pexpect` module version is 4.1.0
+1. Copy the "OpenThread.py" to /GRL/Thread1.1/Thread_Harness/THCI folder.
 
-   * pip install pexpect
+2. Connect DUT(Device Under Test), sniffer and CC2538DK(or hardware running OpenThread) as reference device to Host PC.
 
-   * pip install pexpect_serial
+3. Launch Thread Test Harness Software and modify the default configuration if needed then click "Start".
 
-   If there is already `pexpect` and `pexpect_serial` installed, just need to upgrade them.
+4. Drag OpenThread: TI CC2538DK reference device to Test Bed list with desired number.
 
-   * pip install pexpect --upgrade
-
-   * pip install pexpect_serial --upgrade
-
-   If there is no 'pip' command installed before, please follow the below instructions to install 'pip' on
-   Windows OS first.
-
-   1). Download the pip python source code from "https://pypi.python.org/pypi/pip#downloads"
-
-   2). Unzip the source package and go to the pip directory then install.
-
-       * python setup.py install
-
-   3). Add "pip" executable file path in the Environment Variables.
-
-       * add "C\:Python27\Scripts" to environment variable "Path".
-
-2. Copy the new installed or upgraded `pexpect` and `pexpect_serial` packages to Harness' Python27 directory.
-
-   * copy C:\Python27\Lib\site-packages\pexpect C:\GRL\Thread1.1\Python27\Lib\site-packages\
-
-   * copy C:\Python27\Lib\site-packages\pexpect-4.1.0.dist-info C:\GRL\Thread1.1\Python27\Lib\site-packages\
-
-   * copy C:\Python27\Lib\site-packages\pexpect_serial C:\GRL\Thread1.1\Python27\Lib\site-packages\
-
-   * copy C:\Python27\Lib\site-packages\pexpect_serial-0.4.4-py2.7.egg-info C:\GRL\Thread1.1\Python27\Lib\site-packages\
-
-3. Replace the origin "ARM.py" in Harness THCI directory with OpenThread THCI python script in /tools/harness-thci
-   (the same name "ARM.py").
-
-4. Connect sniffer and CC2538DK as reference unit to Host PC.
-
-5. Launch Thread Test Harness Software and modify the default configuration if needed then click "Start".
-
-6. Drag ARM:NXP FRDM-K64F with FireFly 6LoWPAN SHIELD reference unit to Test Bed list with desired number.
-
-7. Select one or multiple test cases to execute.
+5. Select one or multiple test cases to execute.