diff --git a/Makefile b/Makefile
index bec51b8..4d06148 100644
--- a/Makefile
+++ b/Makefile
@@ -81,6 +81,10 @@ endif
 # Project, sources and paths
 #
 
+# Dvice node to flash
+DEVICE = /dev/cu.usbmodem401
+#DEVICE = /dev/ttyACM0
+
 # Define project name here
 PROJECT = ch
 
@@ -225,6 +229,4 @@ flash: build/ch.bin
 	dfu-util -d 0483:df11 -a 0 -s 0x08000000:leave -D build/ch.bin
 
 dfu:
-	-@printf "reset dfu\r" >/dev/cu.usbmodem401
-
-
+	-printf "reset dfu\r" >$(DEVICE) && sleep 1
diff --git a/main.c b/main.c
index fedbfe4..d5a5430 100644
--- a/main.c
+++ b/main.c
@@ -708,7 +708,6 @@ config_t config = {
 //  .touch_cal =         { 693, 605, 124, 171 },  // 2.4 inch LCD panel
   .touch_cal =         { 338, 522, 153, 192 },  // 2.8 inch LCD panel
 //  .touch_cal =         { 252, 450, 111, 150 },  //4.0" LCD
-  .freq_mode = FREQ_MODE_START_STOP,
   .harmonic_freq_threshold = FREQUENCY_THRESHOLD,
   .vbat_offset = 500,
   .bandwidth = BANDWIDTH_1000
@@ -748,6 +747,8 @@ void load_default_properties(void)
   current_props._active_marker   = 0;
   current_props._domain_mode     = 0;
   current_props._marker_smith_format = MS_RLC;
+  current_props._freq_mode = FREQ_MODE_START_STOP;
+
 //Checksum add on caldata_save
 //current_props.checksum = 0;
 }
@@ -1036,7 +1037,7 @@ set_sweep_frequency(int type, uint32_t freq)
   ensure_edit_config();
   switch (type) {
     case ST_START:
-      config.freq_mode &= ~FREQ_MODE_CENTER_SPAN;
+      freq_mode &= ~FREQ_MODE_CENTER_SPAN;
       if (frequency0 != freq) {
         frequency0 = freq;
         // if start > stop then make start = stop
@@ -1044,7 +1045,7 @@ set_sweep_frequency(int type, uint32_t freq)
       }
       break;
     case ST_STOP:
-      config.freq_mode &= ~FREQ_MODE_CENTER_SPAN;
+      freq_mode &= ~FREQ_MODE_CENTER_SPAN;
       if (frequency1 != freq) {
         frequency1 = freq;
         // if start > stop then make start = stop
@@ -1052,7 +1053,7 @@ set_sweep_frequency(int type, uint32_t freq)
       }
       break;
     case ST_CENTER:
-      config.freq_mode |= FREQ_MODE_CENTER_SPAN;
+      freq_mode |= FREQ_MODE_CENTER_SPAN;
       uint32_t center = frequency0 / 2 + frequency1 / 2;
       if (center != freq) {
         uint32_t span = frequency1 - frequency0;
@@ -1067,7 +1068,7 @@ set_sweep_frequency(int type, uint32_t freq)
       }
       break;
     case ST_SPAN:
-      config.freq_mode |= FREQ_MODE_CENTER_SPAN;
+      freq_mode |= FREQ_MODE_CENTER_SPAN;
       if (frequency1 - frequency0 != freq) {
         uint32_t center = frequency0 / 2 + frequency1 / 2;
         if (center < START_MIN + freq / 2) {
@@ -1081,7 +1082,7 @@ set_sweep_frequency(int type, uint32_t freq)
       }
       break;
     case ST_CW:
-      config.freq_mode |= FREQ_MODE_CENTER_SPAN;
+      freq_mode |= FREQ_MODE_CENTER_SPAN;
       if (frequency0 != freq || frequency1 != freq) {
         frequency0 = freq;
         frequency1 = freq;
diff --git a/nanovna.h b/nanovna.h
index f822983..3774c9f 100644
--- a/nanovna.h
+++ b/nanovna.h
@@ -295,7 +295,7 @@ typedef struct properties {
   int8_t _active_marker;
   uint8_t _domain_mode; /* 0bxxxxxffm : where ff: TD_FUNC m: DOMAIN_MODE */
   uint8_t _marker_smith_format;
-  uint8_t reserved;
+  uint8_t _freq_mode;
   uint32_t checksum;
 } properties_t;
 //on POINTS_COUNT = 101, sizeof(properties_t) == 4152 (need reduce size on 56 bytes to 4096 for more compact save slot size)
@@ -414,7 +414,6 @@ void show_logo(void);
 #define SAVE_CONFIG_SIZE        0x00000800
 // Depend from properties_t size, should be aligned by FLASH_PAGESIZE
 #define SAVE_PROP_CONFIG_SIZE   0x00001800
-
 // Save config_t and properties_t flash area (see flash7  : org = 0x08018000, len = 32k from *.ld settings)
 // Properties save area follow after config
 // len = SAVE_CONFIG_SIZE + SAVEAREA_MAX * SAVE_PROP_CONFIG_SIZE   0x00008000  32k
@@ -439,9 +438,10 @@ extern int16_t lastsaveid;
 #define domain_mode current_props._domain_mode
 #define velocity_factor current_props._velocity_factor
 #define marker_smith_format current_props._marker_smith_format
+#define freq_mode current_props._freq_mode
 
-#define FREQ_IS_STARTSTOP() (!(config.freq_mode&FREQ_MODE_CENTER_SPAN))
-#define FREQ_IS_CENTERSPAN() (config.freq_mode&FREQ_MODE_CENTER_SPAN)
+#define FREQ_IS_STARTSTOP() (!(freq_mode & FREQ_MODE_CENTER_SPAN))
+#define FREQ_IS_CENTERSPAN() (freq_mode & FREQ_MODE_CENTER_SPAN)
 #define FREQ_IS_CW() (frequency0 == frequency1)
 
 int caldata_save(uint32_t id);
diff --git a/ui.c b/ui.c
index a366466..a0bca5d 100644
--- a/ui.c
+++ b/ui.c
@@ -636,7 +636,7 @@ menu_points_cb(int item, uint8_t data)
   draw_menu();
 }
 
-static void 
+static void
 choose_active_marker(void)
 {
   int i;
@@ -766,9 +766,11 @@ menu_marker_search_cb(int item, uint8_t data)
     break;
   case 2: /* search Left */
     i = marker_search_left(markers[active_marker].index);
+    uistat.marker_tracking = false;
     break;
   case 3: /* search right */
     i = marker_search_right(markers[active_marker].index);
+    uistat.marker_tracking = false;
     break;
   case 4: /* tracking */
     uistat.marker_tracking = !uistat.marker_tracking;