diff --git a/manifests/smlight/slzb06Mg24_bootloader.yaml b/manifests/smlight/slzb06Mg24_bootloader.yaml
index 8c00a65f..548085d3 100644
--- a/manifests/smlight/slzb06Mg24_bootloader.yaml
+++ b/manifests/smlight/slzb06Mg24_bootloader.yaml
@@ -17,10 +17,10 @@ c_defines:
   SL_SERIAL_UART_PERIPHERAL_NO: 0
 
   SL_SERIAL_UART_TX_PORT: gpioPortA
-  SL_SERIAL_UART_TX_PIN:  5
+  SL_SERIAL_UART_TX_PIN:  6
 
   SL_SERIAL_UART_RX_PORT: gpioPortA
-  SL_SERIAL_UART_RX_PIN:  6
+  SL_SERIAL_UART_RX_PIN:  5
 
   SL_SERIAL_UART_CTS_PORT: 0
   SL_SERIAL_UART_CTS_PIN:  0
diff --git a/manifests/smlight/slzb06Mg24_opentread_rcp .yaml b/manifests/smlight/slzb06Mg24_opentread_rcp .yaml
index 8830ae90..5d590077 100644
--- a/manifests/smlight/slzb06Mg24_opentread_rcp .yaml	
+++ b/manifests/smlight/slzb06Mg24_opentread_rcp .yaml	
@@ -17,10 +17,10 @@ c_defines:
   SL_UARTDRV_USART_VCOM_BAUDRATE: 460800
 
   SL_UARTDRV_USART_VCOM_TX_PORT: gpioPortA
-  SL_UARTDRV_USART_VCOM_TX_PIN:  5
+  SL_UARTDRV_USART_VCOM_TX_PIN:  6
 
   SL_UARTDRV_USART_VCOM_RX_PORT: gpioPortA
-  SL_UARTDRV_USART_VCOM_RX_PIN:  6
+  SL_UARTDRV_USART_VCOM_RX_PIN:  5
 
   SL_UARTDRV_USART_VCOM_CTS_PORT: 0
   SL_UARTDRV_USART_VCOM_CTS_PIN:  0
diff --git a/manifests/smlight/slzb06Mg24_zigbee_ncp.yaml b/manifests/smlight/slzb06Mg24_zigbee_ncp.yaml
index c811d268..92119ca4 100644
--- a/manifests/smlight/slzb06Mg24_zigbee_ncp.yaml
+++ b/manifests/smlight/slzb06Mg24_zigbee_ncp.yaml
@@ -36,10 +36,10 @@ c_defines:
   SL_IOSTREAM_USART_VCOM_PERIPHERAL_NO: 0
 
   SL_IOSTREAM_USART_VCOM_TX_PORT: gpioPortA
-  SL_IOSTREAM_USART_VCOM_TX_PIN:  5
+  SL_IOSTREAM_USART_VCOM_TX_PIN:  6
 
   SL_IOSTREAM_USART_VCOM_RX_PORT: gpioPortA
-  SL_IOSTREAM_USART_VCOM_RX_PIN:  6
+  SL_IOSTREAM_USART_VCOM_RX_PIN:  5
 
   SL_IOSTREAM_USART_VCOM_CTS_PORT: 0
   SL_IOSTREAM_USART_VCOM_CTS_PIN:  0
diff --git a/manifests/smlight/slzb06Mg24_zigbee_router.yaml b/manifests/smlight/slzb06Mg24_zigbee_router.yaml
index a2d2db6f..5279d825 100644
--- a/manifests/smlight/slzb06Mg24_zigbee_router.yaml
+++ b/manifests/smlight/slzb06Mg24_zigbee_router.yaml
@@ -46,10 +46,9 @@ c_defines:
   SL_IOSTREAM_USART_VCOM_PERIPHERAL_NO: 0
 
   SL_IOSTREAM_USART_VCOM_TX_PORT: gpioPortA
-  SL_IOSTREAM_USART_VCOM_TX_PIN:  5
-
+  SL_IOSTREAM_USART_VCOM_TX_PIN:  6
   SL_IOSTREAM_USART_VCOM_RX_PORT: gpioPortA
-  SL_IOSTREAM_USART_VCOM_RX_PIN:  6
+  SL_IOSTREAM_USART_VCOM_RX_PIN:  5
 
   SL_IOSTREAM_USART_VCOM_CTS_PORT: 0
   SL_IOSTREAM_USART_VCOM_CTS_PIN:  0