diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 00000000..8d321131
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,24 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/docker-existing-dockerfile
+{
+	"name": "Silabs Firmware Builder",
+	"image": "ghcr.io/darkxst/silabs-firmware-builder:4.4.5",
+
+    "containerEnv": {
+        "GECKO_SDK_VERSION": "v4.4.5"
+    }
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Uncomment the next line to run commands after the container is created.
+	// "postCreateCommand": "cat /etc/os-release",
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as an existing user other than the container default. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "devcontainer"
+}
diff --git a/manifests/smlight/slzb07Mg24_openthread_rcp.yaml b/manifests/smlight/slzb07Mg24_openthread_rcp.yaml
index 62970898..4bd3b6a9 100644
--- a/manifests/smlight/slzb07Mg24_openthread_rcp.yaml
+++ b/manifests/smlight/slzb07Mg24_openthread_rcp.yaml
@@ -14,6 +14,7 @@ c_defines:
   SL_UARTDRV_USART_VCOM_PERIPHERAL: USART0
   SL_UARTDRV_USART_VCOM_PERIPHERAL_NO: 0
   SL_UARTDRV_USART_VCOM_BAUDRATE: 460800
+  SL_UARTDRV_USART_VCOM_FLOW_CONTROL_TYPE: uartdrvFlowControlHw
 
   SL_UARTDRV_USART_VCOM_TX_PORT: gpioPortA
   SL_UARTDRV_USART_VCOM_TX_PIN:  6
@@ -27,6 +28,4 @@ c_defines:
   SL_UARTDRV_USART_VCOM_RTS_PORT: gpioPortB
   SL_UARTDRV_USART_VCOM_RTS_PIN:  0
 
-  SL_CLOCK_MANAGER_HFXO_EN: 1
-