diff --git a/RELEASE.txt b/RELEASE.txt
index 89f0184cc..b7f8f70eb 100644
--- a/RELEASE.txt
+++ b/RELEASE.txt
@@ -23,6 +23,11 @@ This document describes the differences between v7.0.1 and v7.0.0
     - jungfrau multi mod sync mode (start, trigger, stop)
     - set/get timing jungfrau does not give error when syc enabled
     - switching between 1 and 2 interfaces did not set gui/client zmq port properly. Resulted in dummy streaming forever.
+    - rx_roi in zmq header for external guis
+    - show fix go in expert mode from any tab (not just settings tab)
+    - if synced, setting master to slave would have changed status to running. workaround found in software
+    - new firmware requirement for fix. if acq stopped in sync mode the slave stays running for next acquisition and framesl is stuck from previous acq.
+
 
 
 2  On-board Detector Server Compatibility
diff --git a/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServerv7.0.2 b/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServerv7.0.2
index 820c9cb9e..30807e5cb 100755
Binary files a/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServerv7.0.2 and b/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServerv7.0.2 differ
diff --git a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
index c34db22d4..0309d5396 100644
--- a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
@@ -1388,14 +1388,18 @@ int setMaster(enum MASTERINDEX m) {
     char *master_names[] = {MASTER_NAMES};
     LOG(logINFOBLUE, ("Setting up as %s in (%s server)\n", master_names[m],
                       (isControlServer ? "control" : "stop")));
+
+    int prevSync = getSynchronization();
+    setSynchronization(0);
     int retval = -1;
+    int retMaster = OK;
     switch (m) {
     case OW_MASTER:
         bus_w(CONTROL_REG, bus_r(CONTROL_REG) | CONTROL_MASTER_MSK);
         isMaster(&retval);
         if (retval != 1) {
             LOG(logERROR, ("Could not set master\n"));
-            return FAIL;
+            retMaster = FAIL;
         }
         break;
     case OW_SLAVE:
@@ -1403,15 +1407,16 @@ int setMaster(enum MASTERINDEX m) {
         isMaster(&retval);
         if (retval != 0) {
             LOG(logERROR, ("Could not set slave\n"));
-            return FAIL;
+            retMaster = FAIL;
         }
         break;
     default:
         LOG(logERROR, ("Cannot reset to hardware settings from client. Restart "
                        "detector server.\n"));
-        return FAIL;
+        retMaster = FAIL;
     }
-    return OK;
+    setSynchronization(prevSync);
+    return retMaster;
 }
 
 int isMaster(int *retval) {
diff --git a/slsDetectorServers/jungfrauDetectorServer/slsDetectorServer_defs.h b/slsDetectorServers/jungfrauDetectorServer/slsDetectorServer_defs.h
index d54926855..9a08463bc 100644
--- a/slsDetectorServers/jungfrauDetectorServer/slsDetectorServer_defs.h
+++ b/slsDetectorServers/jungfrauDetectorServer/slsDetectorServer_defs.h
@@ -5,7 +5,7 @@
 #include "sls/sls_detector_defs.h"
 
 #define MIN_REQRD_VRSN_T_RD_API  0x171220
-#define REQRD_FRMWRE_VRSN_BOARD2 0x221104 // 1.0 pcb (version = 010)
+#define REQRD_FRMWRE_VRSN_BOARD2 0x230515 // 1.0 pcb (version = 010)
 #define REQRD_FRMWRE_VRSN        0x221103 // 2.0 pcb (version = 011)
 
 #define NUM_HARDWARE_VERSIONS (2)
diff --git a/slsDetectorSoftware/tests/test-CmdProxy-jungfrau.cpp b/slsDetectorSoftware/tests/test-CmdProxy-jungfrau.cpp
index 21e8eb1e8..2652365c4 100644
--- a/slsDetectorSoftware/tests/test-CmdProxy-jungfrau.cpp
+++ b/slsDetectorSoftware/tests/test-CmdProxy-jungfrau.cpp
@@ -523,6 +523,28 @@ TEST_CASE("sync", "[.cmd]") {
             proxy.Call("sync", {"1"}, -1, PUT, oss);
             REQUIRE(oss.str() == "sync 1\n");
         }
+        // setting to master or slave when synced
+        {
+            // get previous master
+            int prevMaster = 0;
+            auto previous = det.getMaster();
+            for (int i = 0; i != det.size(); ++i) {
+                if (previous[i] == 1) {
+                    prevMaster = i;
+                    break;
+                }
+            }
+            proxy.Call("master", {"1"}, 0, PUT);
+            proxy.Call("master", {"0"}, 0, PUT);
+            std::ostringstream oss;
+            proxy.Call("status", {}, -1, GET, oss);
+            REQUIRE(oss.str() != "status running\n");
+            // set all to slaves, and then master
+            for (int i = 0; i != det.size(); ++i) {
+                det.setMaster(0, {i});
+            }
+            det.setMaster(1, prevMaster);
+        }
         {
             std::ostringstream oss;
             proxy.Call("sync", {}, -1, GET, oss);
diff --git a/slsSupportLib/include/sls/versionAPI.h b/slsSupportLib/include/sls/versionAPI.h
index 03f4d373f..c0b0643a1 100644
--- a/slsSupportLib/include/sls/versionAPI.h
+++ b/slsSupportLib/include/sls/versionAPI.h
@@ -9,5 +9,5 @@
 #define APIMOENCH    "7.0.0 0x230222"
 #define APIEIGER     "7.0.0 0x230222"
 #define APIRECEIVER  "7.0.0 0x230222"
-#define APIJUNGFRAU  "7.0.2 0x230420"
 #define APILIB       "7.0.2 0x230421"
+#define APIJUNGFRAU "7.0.2 0x230517"