diff --git a/kobo/monitorink.sh b/kobo/monitorink.sh
index 4f3165a..4a0738c 100755
--- a/kobo/monitorink.sh
+++ b/kobo/monitorink.sh
@@ -11,9 +11,10 @@ cd "$BASE" || exit 1
 # --- Configuration (adapter au besoin) ---
 # HTTP direct vers l'IP du homelab (busybox wget, pas de curl/DNS/TLS requis).
 export MONITORINK_URL="http://192.168.0.43:8899/image.png"
-export MONITORINK_REFRESH=600
+export MONITORINK_REFRESH=180   # secondes (compromis fraîcheur horloge / batterie ; ajustable)
 
 echo "===== monitorink start $(date) =====" >> "$LOG"
+sync
 
 # Gouverneur CPU économe (Libra 2 = policy0 ; fallback générique).
 echo ondemand > /sys/devices/system/cpu/cpufreq/policy0/scaling_governor 2>/dev/null
diff --git a/kobo/monitorinkloop.sh b/kobo/monitorinkloop.sh
index beb8015..a982d7e 100755
--- a/kobo/monitorinkloop.sh
+++ b/kobo/monitorinkloop.sh
@@ -16,7 +16,7 @@ TMP="/tmp/monitorink.png"
 FBINK="./bin/fbink/fbink"
 BUSYBOX="./bin/busybox_kobo"
 
-log() { echo "[$(date '+%H:%M:%S')] $*"; }
+log() { echo "[$(date '+%H:%M:%S')] $*"; sync; }
 
 fetch() {
     # busybox wget (toujours présent), fallback curl si dispo dans le PATH.