diff --git a/ci-scripts/cls_cots_ue.py b/ci-scripts/cls_cots_ue.py
index 56889e1f79..59c2713b47 100644
--- a/ci-scripts/cls_cots_ue.py
+++ b/ci-scripts/cls_cots_ue.py
@@ -27,6 +27,9 @@
 #     pexpect
 #---------------------------------------------------------------------
 
+#to use isfile
+import os
+import sys
 #to use logging.info()
 import logging
 #to create a SSH object locally in the methods
diff --git a/ci-scripts/main.py b/ci-scripts/main.py
index fb5260b2c2..86fd9d84df 100644
--- a/ci-scripts/main.py
+++ b/ci-scripts/main.py
@@ -3656,7 +3656,8 @@ elif re.match('^TesteNB$', mode, re.IGNORECASE) or re.match('^TestUE$', mode, re
 				GetParametersFromXML(action)
 				if action == 'Initialize_UE' or action == 'Attach_UE' or action == 'Detach_UE' or action == 'Ping' or action == 'Iperf' or action == 'Reboot_UE' or action == 'DataDisable_UE' or action == 'DataEnable_UE' or action == 'CheckStatusUE':
 					if (CiTestObj.ADBIPAddress != 'none'):
-						terminate_ue_flag = False
+						#in these cases, having no devices is critical, GetAllUEDevices function has to manage it as a critical error, reason why terminate_ue_flag is set to True
+						terminate_ue_flag = True 
 						CiTestObj.GetAllUEDevices(terminate_ue_flag)
 				if action == 'Build_eNB':
 					RAN.BuildeNB()
diff --git a/doc/BUILD.md b/doc/BUILD.md
index 97f9047596..9a28e5ba1f 100644
--- a/doc/BUILD.md
+++ b/doc/BUILD.md
@@ -16,6 +16,7 @@ This page is valid on tags starting from **`2019.w09`**.
 
 # Soft Modem Build Script
 
+The OAI EPC is developed in a distinct project with it's own [documentation](https://github.com/OPENAIRINTERFACE/openair-epc-fed/wiki) , it is not described here.
 
 OAI softmodem sources, which aim to implement 3GPP compliant UEs, eNodeB and gNodeB can be downloaded from the Eurecom [gitlab repository](./GET_SOURCES.md).
 
diff --git a/doc/GET_SOURCES.md b/doc/GET_SOURCES.md
index e27e9dbb74..854ff3b504 100644
--- a/doc/GET_SOURCES.md
+++ b/doc/GET_SOURCES.md
@@ -33,12 +33,8 @@ holds the source code for (eNB RAN + UE RAN).
 For legal issues (licenses), the core network (EPC) source code is now moved away from
 the above openairinterface5g git repository.
 
-*  A very old version of the EPC is located under the same GitLab Eurecom server (splitted into 2 Git repos):
-   *  [openair-cn](https://gitlab.eurecom.fr/oai/openair-cn.git) with apache license
-   *  [xtables-addons-oai](https://gitlab.eurecom.fr/oai/xtables-addons-oai.git) with GPL license
-   *  **These repositories are no more maintained.**
 *  A more recent version is available under our GitHub domain:
-   *  [OAI GitHub openair-cn](https://github.com/OPENAIRINTERFACE/openair-cn)
+   *  [OAI GitHub openair-cn domain](https://github.com/OPENAIRINTERFACE)
    *  Check its wiki pages for more details
 
 Configure git with your name/email address (only important if you are developer and want to contribute/push code to Git Repository):
@@ -80,8 +76,6 @@ you do not have account on gitlab.eurecom.fr, please register yourself to gitlab
    * `git clone git@gitlab.eurecom.fr:oai/openairinterface5g.git`
 * Clone with user name/password prompt:
    * `git clone https://YOUR_USERNAME@gitlab.eurecom.fr/oai/openairinterface5g.git`
-   * `git clone https://YOUR_USERNAME@gitlab.eurecom.fr/oai/openair-cn.git`
-   * `git clone https://YOUR_USERNAME@gitlab.eurecom.fr/oai/xtables-addons-oai.git` (optional, openair-cn build script can do it for you)
 
 # Which branch to checkout?