diff --git a/src/mesh/mesh_network.c b/src/mesh/mesh_network.c
index e3a106de6..408fc872b 100644
--- a/src/mesh/mesh_network.c
+++ b/src/mesh/mesh_network.c
@@ -994,6 +994,12 @@ void mesh_trigger_iv_update(void){
     global_iv_index++;
 }
 
+void mesh_iv_update_completed(void){
+    if (!global_iv_update_active) return;
+    // set Normal mode
+    global_iv_update_active = 0;
+}
+
 // Network PDU Getter
 uint8_t  mesh_network_nid(mesh_network_pdu_t * network_pdu){
     return network_pdu->data[0] & 0x7f;
diff --git a/src/mesh/mesh_network.h b/src/mesh/mesh_network.h
index 05cd91577..fc45fd20d 100644
--- a/src/mesh/mesh_network.h
+++ b/src/mesh/mesh_network.h
@@ -379,6 +379,7 @@ uint32_t mesh_get_iv_index_for_tx(void);
 
 int mesh_iv_update_active(void);
 void mesh_trigger_iv_update(void);
+void mesh_iv_update_completed(void);
 
 // Testing only
 void mesh_network_received_message(const uint8_t * pdu_data, uint8_t pdu_len, uint8_t flags);
diff --git a/test/mesh/mesh_access.c b/test/mesh/mesh_access.c
index 1ca4e8a75..b2be117a0 100644
--- a/test/mesh/mesh_access.c
+++ b/test/mesh/mesh_access.c
@@ -1404,10 +1404,12 @@ static void mesh_access_secure_network_beacon_handler(uint8_t packet_type, uint1
     }
     if (subnet == NULL) return;
 
+    uint8_t flags = packet[1];
+
     // Key refresh via secure network beacons that are authenticated with new netkey
     if (new_key){
         // either first or second phase (in phase 0, new key is not set)
-        int key_refresh_flag = packet[1] & 1;
+        int key_refresh_flag = flags & 1;
         if (key_refresh_flag){
             //  transition to phase 3 from either phase 1 or 2
             switch (subnet->key_refresh){
@@ -1432,5 +1434,19 @@ static void mesh_access_secure_network_beacon_handler(uint8_t packet_type, uint1
         }
     }
 
-    // TODO: IV Update
+    // IV Update
+
+    // TODO: validate IV index w.r.t. local index
+
+    int iv_update_active_flag = flags & 2;
+
+    if (mesh_iv_update_active()){
+        if (iv_update_active_flag){
+            mesh_trigger_iv_update();
+        }
+    } else {
+        if (iv_update_active_flag == 0){
+            mesh_iv_update_completed();
+        }
+    }
 }