diff --git a/ApfelBruno/Node/update node.bru b/ApfelBruno/Node/update node.bru
new file mode 100644
index 0000000..4f99979
--- /dev/null
+++ b/ApfelBruno/Node/update node.bru	
@@ -0,0 +1,25 @@
+meta {
+  name: update node
+  type: http
+  seq: 4
+}
+
+put {
+  url: http://localhost:8080/api/v1/nodes/:id
+  body: json
+  auth: none
+}
+
+params:path {
+  id: 04-7c-16-06-b3-53
+}
+
+body:json {
+  {
+    "coord_la":1,
+    "coord_lo":2,
+    "battery_minimum":99,
+    "battery_maximum":9,
+    "group":"32e0f9af-867b-4888-8261-cb99dfff5675"
+  }
+}
diff --git a/crates/backend/src/controller/node.rs b/crates/backend/src/controller/node.rs
index 011f8ea..38e8aeb 100644
--- a/crates/backend/src/controller/node.rs
+++ b/crates/backend/src/controller/node.rs
@@ -1,10 +1,12 @@
 use crate::AppState;
+use actix_web::web::Path;
 use actix_web::{
     error::{ErrorBadRequest, ErrorInternalServerError},
     web, Responder,
 };
 use chrono::Utc;
 use entity::{node, node_group, sensor_data};
+use eui48::ParseError;
 use sea_orm::{entity::*, query::*, ActiveModelTrait, ActiveValue, EntityTrait};
 use serde::{Deserialize, Serialize};
 
@@ -29,13 +31,18 @@ pub struct NodeWithMac {
     group: uuid::Uuid,
 }
 
+#[derive(Deserialize, Serialize)]
+pub struct UpdateNode {
+    coord_la: f64,
+    coord_lo: f64,
+    battery_minimum: f64,
+    battery_maximum: f64,
+    group: uuid::Uuid,
+}
+
 impl From<node::Model> for NodeWithMac {
     fn from(value: node::Model) -> Self {
-        let mac_id_bytes = value.id.to_be_bytes();
-        let mut mac_bytes: [u8; 6] = [0; 6];
-        mac_bytes.copy_from_slice(&mac_id_bytes[2..]);
-        let mac = eui48::MacAddress::new(mac_bytes).to_string(eui48::MacAddressFormat::Canonical);
-
+        let mac = convert_id_to_mac(&value.id);
         Self {
             id: mac,
             coord_la: value.coord_la,
@@ -51,13 +58,9 @@ impl TryInto<node::Model> for NodeWithMac {
     type Error = eui48::ParseError;
 
     fn try_into(self) -> Result<node::Model, Self::Error> {
-        let mac = eui48::MacAddress::parse_str(&self.id)?;
-        let mac_bytes = mac.to_array();
-        let mut mac_id_bytes: [u8; 8] = [0; 8];
-        mac_id_bytes[2..].copy_from_slice(&mac_bytes);
-        let mac_id = i64::from_be_bytes(mac_id_bytes);
+        let mac = convert_mac_to_id(&self.id)?;
         Ok(node::Model {
-            id: mac_id,
+            id: mac,
             coord_la: self.coord_la,
             coord_lo: self.coord_lo,
             battery_minimum: self.battery_minimum,
@@ -67,6 +70,21 @@ impl TryInto<node::Model> for NodeWithMac {
     }
 }
 
+pub fn convert_mac_to_id(mac: &str) -> Result<i64, ParseError> {
+    let mac = eui48::MacAddress::parse_str(mac)?;
+    let mac_bytes = mac.to_array();
+    let mut mac_id_bytes: [u8; 8] = [0; 8];
+    mac_id_bytes[2..].copy_from_slice(&mac_bytes);
+    Ok(i64::from_be_bytes(mac_id_bytes))
+}
+
+pub fn convert_id_to_mac(id: &i64) -> String {
+    let mac_id_bytes = id.to_be_bytes();
+    let mut mac_bytes: [u8; 6] = [0; 6];
+    mac_bytes.copy_from_slice(&mac_id_bytes[2..]);
+    eui48::MacAddress::new(mac_bytes).to_string(eui48::MacAddressFormat::Canonical)
+}
+
 #[derive(Serialize)]
 struct GroupWithNode {
     #[serde(flatten)]
@@ -172,28 +190,30 @@ pub async fn create_node(
     Ok(web::Json(result))
 }
 
-/*
 pub async fn update_node(
     state: web::Data<AppState>,
-    node: web::Json<NodeWithMac>,
-    path: Path<Uuid>,
+    node: web::Json<UpdateNode>,
+    path: Path<String>,
 ) -> actix_web::Result<impl Responder> {
     let db = &state.db;
-    let node: NodeWithMac = node.into_inner();
+    let node = node.into_inner();
     let id = path.into_inner();
 
-    let node: = entity::node::ActiveModel {
-        id: ActiveValue::NotSet,
-        coord_la: ActiveValue::Set(node.coord_la),
-        coord_lo: ActiveValue::Set(node.coord_lo),
+    let mac_id = convert_mac_to_id(&id).map_err(ErrorBadRequest)?;
+    let node = entity::node::ActiveModel {
+        id: ActiveValue::Unchanged(mac_id),
         battery_minimum: ActiveValue::Set(node.battery_minimum),
         battery_maximum: ActiveValue::Set(node.battery_maximum),
+        coord_la: ActiveValue::Set(node.coord_la),
+        coord_lo: ActiveValue::Set(node.coord_lo),
         group: ActiveValue::Set(node.group),
     };
 
-    Ok(web::Json(node))
+    let result = node.update(db).await.map_err(ErrorInternalServerError)?;
+
+    Ok(web::Json(result))
 }
- */
+
 /*
 pub async fn delete_node(
     state: web::Data<AppState>,
diff --git a/crates/backend/src/main.rs b/crates/backend/src/main.rs
index 65996ff..9194695 100644
--- a/crates/backend/src/main.rs
+++ b/crates/backend/src/main.rs
@@ -54,7 +54,7 @@ async fn main() -> std::io::Result<()> {
                 loop {
                     if let Ok(_) = stream.read(&mut buffer).await {
                         println!("{:#x?}", &buffer);
-                        if let Ok((_, mut value)) = Data::from_bytes((&buffer, 0)) {
+                        if let Ok((_, value)) = Data::from_bytes((&buffer, 0)) {
                             println!("Received: {:#?}", value);
 
                             let mut mac = value.mac;
diff --git a/crates/backend/src/routes.rs b/crates/backend/src/routes.rs
index b9ea427..c88f55e 100644
--- a/crates/backend/src/routes.rs
+++ b/crates/backend/src/routes.rs
@@ -19,6 +19,7 @@ pub fn config(cfg: &mut web::ServiceConfig) {
                     .get(node::get_nodes)
                     .post(node::create_node),
             )
+            .service(web::resource("/nodes/{id}").put(node::update_node))
             .service(web::resource("/data").get(node::get_data))
             //.service(web::resource("/nodes/{id}").delete(node::delete_node))
             .service(web::resource("/groups").post(node::create_group)),