diff --git a/slsDetectorServers/moenchDetectorServer/bin/moenchDetectorServer_developer b/slsDetectorServers/moenchDetectorServer/bin/moenchDetectorServer_developer
index dfcf76c14..8b00fa387 100755
Binary files a/slsDetectorServers/moenchDetectorServer/bin/moenchDetectorServer_developer and b/slsDetectorServers/moenchDetectorServer/bin/moenchDetectorServer_developer differ
diff --git a/slsDetectorServers/mythen3DetectorServer/bin/mythen3DetectorServer_developer b/slsDetectorServers/mythen3DetectorServer/bin/mythen3DetectorServer_developer
index 4ef9c1328..c997ecb4e 100755
Binary files a/slsDetectorServers/mythen3DetectorServer/bin/mythen3DetectorServer_developer and b/slsDetectorServers/mythen3DetectorServer/bin/mythen3DetectorServer_developer differ
diff --git a/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
index 4b8fa905d..573836ab5 100644
--- a/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
@@ -480,6 +480,11 @@ void setupDetector() {
         READOUT_PLL_VCO_FREQ_HZ, SYSTEM_PLL_VCO_FREQ_HZ);
     ALTERA_PLL_C10_ResetPLL(READOUT_PLL);
     ALTERA_PLL_C10_ResetPLL(SYSTEM_PLL);
+    // change startup clock divider in software
+    // because firmware only sets max clock divider
+    setClockDividerWithTimeUpdateOption(READOUT_C0, DEFAULT_READOUT_C0_STARTUP,
+                                        0);
+
     // hv
     DAC6571_SetDefines(HV_HARD_MAX_VOLTAGE, HV_DRIVER_FILE_NAME);
     // dac
@@ -2333,6 +2338,7 @@ int setClockDividerWithTimeUpdateOption(enum CLKINDEX ind, int val,
         return FAIL;
     }
     if (val < 2 || val > getMaxClockDivider()) {
+        LOG(logERROR, ("Invalid clock divider %d\n", val));
         return FAIL;
     }
     char *clock_names[] = {CLK_NAMES};
diff --git a/slsDetectorServers/mythen3DetectorServer/slsDetectorServer_defs.h b/slsDetectorServers/mythen3DetectorServer/slsDetectorServer_defs.h
index 89b294ffc..5ba93057c 100644
--- a/slsDetectorServers/mythen3DetectorServer/slsDetectorServer_defs.h
+++ b/slsDetectorServers/mythen3DetectorServer/slsDetectorServer_defs.h
@@ -65,6 +65,8 @@
 #define DEFAULT_SYSTEM_C2           (5)  //(200000000) // smp_clk, 200 MHz const
 #define DEFAULT_TRIMMING_RUN_CLKDIV (40) // (25000000) // 25 MHz
 
+#define DEFAULT_READOUT_C0_STARTUP (20) //(50000000) // rdo_clk, 50 MHz
+
 #define DEFAULT_ASIC_LATCHING_NUM_PULSES (10)
 #define DEFAULT_MSTR_OTPT_P1_NUM_PULSES  (20)
 #define DEFAULT_ADIF_PIPELINE_VAL        (8)
diff --git a/slsSupportLib/include/sls/versionAPI.h b/slsSupportLib/include/sls/versionAPI.h
index 2f9c2ffd3..5654a6f28 100644
--- a/slsSupportLib/include/sls/versionAPI.h
+++ b/slsSupportLib/include/sls/versionAPI.h
@@ -8,9 +8,7 @@
 #define APIGOTTHARD  "developer 0x240207"
 #define APIGOTTHARD2 "developer 0x240207"
 #define APIJUNGFRAU  "developer 0x240207"
-#define APIMYTHEN3   "developer 0x240207"
-#define APIMOENCH    "developer 0x240207"
 #define APIXILINXCTB "developer 0x240207"
 #define APIEIGER     "developer 0x240207"
 #define APIMOENCH    "developer 0x240703"
-#define APIMOENCH "developer 0x240703"
+#define APIMYTHEN3 "developer 0x240715"