diff --git a/VERSION b/VERSION
index f8a696c..661e7ae 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.7.2
+1.7.3
diff --git a/changelog.json b/changelog.json
index 9620675..e553461 100644
--- a/changelog.json
+++ b/changelog.json
@@ -1,5 +1,18 @@
 {
   "versions": [
+    {
+      "version": "1.7.3",
+      "date": "2026-05-12",
+      "changes": {
+        "features": [],
+        "improvements": [],
+        "fixes": [
+          "Revert v1.7.2: retrait du check SIM sur la branche CSQ=99 (overhead inutile a chaque coupure signal temporaire, le check sur la branche USOCR/PDP suffit avec un delai de 1-2 cycles maximum)"
+        ],
+        "compatibility": []
+      },
+      "notes": "Apres tests: la SIM est detectee tres vite via la branche PDP meme sans le check sur CSQ=99 (le modem alterne CSQ=99 et CSQ>0 sans SIM). Le check sur CSQ=99 ajoutait du cout AT a chaque coupure reseau temporaire pour un gain marginal. On garde uniquement le check v1.7.1 dans la branche USOCR/PDP."
+    },
     {
       "version": "1.7.2",
       "date": "2026-05-12",
diff --git a/loop/SARA_send_data_v2.py b/loop/SARA_send_data_v2.py
index 08b6ea3..6e80388 100755
--- a/loop/SARA_send_data_v2.py
+++ b/loop/SARA_send_data_v2.py
@@ -1156,35 +1156,19 @@ try:
         if signal_quality == 99:
             print('<span style="color: red;font-weight: bold;">⚠️ATTENTION: Signal Quality indicates no signal (99)⚠️</span>')
 
-            # Diagnostic : signal 99 peut etre du a une SIM absente OU une coupure reseau temporaire
-            sim_ok = check_sim_status()
+            #Pas besoin d'essayer de se reconnecter car reconnection automatique
+            #print("TRY TO RECONNECT:")
+            #command = f'AT+COPS=1,2,{selected_networkID}\r'
+            #command = f'AT+COPS=0\r'
+            #ser_sara.write(command.encode('utf-8'))
+            #responseReconnect = read_complete_response(ser_sara, timeout=20, end_of_response_timeout=20, wait_for_lines=["OK", "+CME ERROR", "ERROR"], debug=True)
+            #print('<p class="text-danger-emphasis">')
+            #print(responseReconnect)
+            #print("</p>", end="")
 
-            if not sim_ok:
-                # SIM injoignable -> alerte tres visible, pas la peine d'attendre une reconnexion
-                print('<hr>')
-                print('<div style="border: 3px solid red; background-color: #ffe5e5; padding: 10px; margin: 10px 0;">')
-                print('<span style="color: red;font-weight: bold;font-size: 1.4em;">🚨🚨🚨 SIM CARD NOT DETECTED 🚨🚨🚨</span><br>')
-                print('<span style="color: red;font-weight: bold;">⛔ Signal a 99 + SIM injoignable : la carte SIM est absente ou mal inseree.</span><br>')
-                print('<span style="color: red;font-weight: bold;">⛔ AT+CPIN? et AT+CCID ont tous les deux echoue.</span><br>')
-                print('<span style="color: red;font-weight: bold;">👉 Action requise : verifier physiquement la carte SIM (sortir/reinserer, nettoyer les contacts).</span>')
-                print('</div>')
-                print('<hr>')
-
-                # LED rouge clignotante
-                led_thread = Thread(target=blink_led, args=(24, 5, 0.5))
-                led_thread.start()
-
-                # Notification WIFI explicite
-                send_error_notification(device_id, "SIM NOT DETECTED -> physical check required (signal 99 + SIM unreachable)")
-
-                print('🛑STOP LOOP🛑')
-                print("<hr>")
-                sys.exit()
-
-            # SIM OK -> juste une coupure reseau temporaire, reconnexion auto
-            print('<span style="color: green;font-weight: bold;">✅ SIM card detected — temporary network signal loss, will retry next cycle</span>')
             print('🛑STOP LOOP🛑')
             print("<hr>")
+            #on arrete le script pas besoin de continuer
             sys.exit()
         else:
             #print("Signal Quality:", signal_quality)