diff --git a/VERSION b/VERSION
index c514bd8..bc80560 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.4.6
+1.5.0
diff --git a/changelog.json b/changelog.json
index c636a5b..841b67d 100644
--- a/changelog.json
+++ b/changelog.json
@@ -1,5 +1,26 @@
 {
   "versions": [
+    {
+      "version": "1.5.0",
+      "date": "2026-03-18",
+      "changes": {
+        "features": [
+          "Payload UDP Miotiq: byte 66 error_flags (erreurs systeme RTC/capteurs)",
+          "Payload UDP Miotiq: byte 67 npm_status (registre status NextPM)",
+          "Payload UDP Miotiq: byte 68 device_status (etat general du boitier, specification)",
+          "Methodes SensorPayload: set_error_flags(), set_npm_status(), set_device_status()"
+        ],
+        "improvements": [
+          "Initialisation bytes 66-68 a 0x00 au lieu de 0xFF pour eviter faux positifs cote serveur",
+          "Escalade erreur UDP: si PDP reset echoue, notification WiFi + hardware reboot + exit"
+        ],
+        "fixes": [],
+        "compatibility": [
+          "Necessite mise a jour du parser Miotiq pour decoder les bytes 66-68 (error_flags, npm_status, device_status)"
+        ]
+      },
+      "notes": "Ajout de registres d'erreur et d'etat dans la payload UDP (bytes 66-68). Les bytes de status sont initialises a 0x00 (aucune erreur) au lieu de 0xFF. Le flag RTC est implemente, les autres flags seront actives progressivement."
+    },
     {
       "version": "1.4.6",
       "date": "2026-03-17",
diff --git a/loop/SARA_send_data_v2.py b/loop/SARA_send_data_v2.py
index 0832a2e..976413b 100755
--- a/loop/SARA_send_data_v2.py
+++ b/loop/SARA_send_data_v2.py
@@ -281,7 +281,13 @@ class SensorPayload:
         #device_id_bytes = bytes.fromhex(device_id)[:8].ljust(8, b'\x00')
 
         self.payload[0:8] = device_id_bytes
-        
+
+        # Status/error bytes default to 0x00 (no error)
+        # 0xFF = "no data" for sensor values, but for status bytes
+        # 0x00 = "no error/no flag" is the safe default
+        self.payload[66] = 0x00  # error_flags
+        self.payload[67] = 0x00  # npm_status
+        self.payload[68] = 0x00  # device_status
         # Set protocol version (byte 9)
         self.payload[9] = 0x01