diff --git a/manifests/easyiot/zb-gw04-1v1_zigbee_ncp.yaml b/manifests/easyiot/zb-gw04-1v1_zigbee_ncp.yaml
index 76735b51..07c2e081 100644
--- a/manifests/easyiot/zb-gw04-1v1_zigbee_ncp.yaml
+++ b/manifests/easyiot/zb-gw04-1v1_zigbee_ncp.yaml
@@ -9,7 +9,7 @@ gbl:
   fw_type: zigbee_ncp
   ezsp_version: dynamic
   baudrate: 115200
-  fw_variant: sw_flow
+  fw_variant: no_flow
 
 configuration:
   SL_ZIGBEE_CHILD_TABLE_SIZE: 32
@@ -30,7 +30,7 @@ c_defines:
   SL_ZIGBEE_SOURCE_ROUTE_TABLE_SIZE: 200
 
   SL_IOSTREAM_USART_VCOM_BAUDRATE: 115200
-  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlSoftware
+  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlNone
   SL_IOSTREAM_USART_VCOM_PERIPHERAL: USART0
   SL_IOSTREAM_USART_VCOM_PERIPHERAL_NO: 0
 
diff --git a/manifests/smlight/slzb06Mg24_zigbee_ncp.yaml b/manifests/smlight/slzb06Mg24_zigbee_ncp.yaml
index f9521741..64c49735 100644
--- a/manifests/smlight/slzb06Mg24_zigbee_ncp.yaml
+++ b/manifests/smlight/slzb06Mg24_zigbee_ncp.yaml
@@ -9,7 +9,7 @@ gbl:
   fw_type: zigbee_ncp
   ezsp_version: dynamic
   baudrate: 115200
-  fw_variant: sw_flow
+  fw_variant: no_flow
 
 configuration:
   SL_ZIGBEE_CHILD_TABLE_SIZE: 32
@@ -32,7 +32,7 @@ c_defines:
 
   SL_IOSTREAM_USART_VCOM_BAUDRATE: 115200
   SL_IOSTREAM_USART_VCOM_RX_BUFFER_SIZE: 64
-  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlSoftware
+  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlNone
   SL_IOSTREAM_USART_VCOM_PERIPHERAL: USART0
   SL_IOSTREAM_USART_VCOM_PERIPHERAL_NO: 0
 
diff --git a/manifests/smlight/slzb06m_zigbee_ncp.yaml b/manifests/smlight/slzb06m_zigbee_ncp.yaml
index 5ee93b76..96a3cf5d 100644
--- a/manifests/smlight/slzb06m_zigbee_ncp.yaml
+++ b/manifests/smlight/slzb06m_zigbee_ncp.yaml
@@ -9,7 +9,7 @@ gbl:
   fw_type: zigbee_ncp
   ezsp_version: dynamic
   baudrate: 115200
-  fw_variant: sw_flow
+  fw_variant: no_flow
 
 configuration:
   SL_ZIGBEE_CHILD_TABLE_SIZE: 32
@@ -23,7 +23,7 @@ c_defines:
   SL_ZIGBEE_SOURCE_ROUTE_TABLE_SIZE: 200
 
   SL_IOSTREAM_USART_VCOM_BAUDRATE: 115200
-  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlSoftware
+  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlNone
   SL_IOSTREAM_USART_VCOM_PERIPHERAL: USART0
   SL_IOSTREAM_USART_VCOM_PERIPHERAL_NO: 0
 
diff --git a/manifests/sonoff/zbdonglee_zigbee_ncp.yaml b/manifests/sonoff/zbdonglee_zigbee_ncp.yaml
index 7fe3950f..41b3d1a3 100644
--- a/manifests/sonoff/zbdonglee_zigbee_ncp.yaml
+++ b/manifests/sonoff/zbdonglee_zigbee_ncp.yaml
@@ -9,7 +9,7 @@ gbl:
   fw_type: zigbee_ncp
   ezsp_version: dynamic
   baudrate: 115200
-  fw_variant: sw_flow
+  fw_variant: no_flow
 
 configuration:
   SL_ZIGBEE_CHILD_TABLE_SIZE: 32
@@ -30,7 +30,7 @@ c_defines:
   SL_ZIGBEE_SOURCE_ROUTE_TABLE_SIZE: 200
 
   SL_IOSTREAM_USART_VCOM_BAUDRATE: 115200
-  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlSoftware
+  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlNone
   SL_IOSTREAM_USART_VCOM_PERIPHERAL: USART0
   SL_IOSTREAM_USART_VCOM_PERIPHERAL_NO: 0
 
diff --git a/manifests/sparkfun/mgm240p_zigbee_ncp.yaml b/manifests/sparkfun/mgm240p_zigbee_ncp.yaml
index b6c3dfd6..a90e014c 100644
--- a/manifests/sparkfun/mgm240p_zigbee_ncp.yaml
+++ b/manifests/sparkfun/mgm240p_zigbee_ncp.yaml
@@ -9,7 +9,7 @@ gbl:
   fw_type: zigbee_ncp
   ezsp_version: dynamic
   baudrate: 115200
-  fw_variant: sw_flow
+  fw_variant: no_flow
 
 configuration:
   SL_ZIGBEE_CHILD_TABLE_SIZE: 32
@@ -30,7 +30,7 @@ c_defines:
   SL_ZIGBEE_SOURCE_ROUTE_TABLE_SIZE: 200
 
   SL_IOSTREAM_USART_VCOM_BAUDRATE: 115200
-  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlSoftware
+  SL_IOSTREAM_USART_VCOM_FLOW_CONTROL_TYPE: uartFlowControlNone
   SL_IOSTREAM_USART_VCOM_PERIPHERAL: USART0
   SL_IOSTREAM_USART_VCOM_PERIPHERAL_NO: 0