diff --git a/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer b/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer
index a16448fe4..12064d53c 100755
Binary files a/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer and b/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer differ
diff --git a/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer b/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer
index 5142d8e06..b3591ab0f 100755
Binary files a/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer and b/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer differ
diff --git a/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c b/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
index 13ebfb71c..fdb2d7291 100644
--- a/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
+++ b/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
@@ -3711,14 +3711,14 @@ int program_fpga(int file_des) {
         // receive program
         if (ret == OK) {
             char *fpgasrc = malloc(filesize);
-            if (receiveData(file_des, fpgasrc, filesize, OTHER) < 0)
+            if (receiveData(file_des, fpgasrc, filesize, OTHER) < 0) {
+                free(fpgasrc);
                 return printSocketReadError();
+            }
 #ifndef VIRTUAL
             ret = eraseAndWriteToFlash(mess, checksum, fpgasrc, filesize);
 #endif
             Server_SendResult(file_des, INT32, NULL, 0);
-
-            // free resources
             free(fpgasrc);
         }
         if (ret == FAIL) {
diff --git a/slsDetectorSoftware/src/DetectorImpl.cpp b/slsDetectorSoftware/src/DetectorImpl.cpp
index cea12ad76..9ea7f2213 100644
--- a/slsDetectorSoftware/src/DetectorImpl.cpp
+++ b/slsDetectorSoftware/src/DetectorImpl.cpp
@@ -1241,7 +1241,7 @@ int DetectorImpl::kbhit() {
 }
 
 std::vector<char> DetectorImpl::readProgrammingFile(const std::string &fname) {
-/*    // validate type of file
+    // validate type of file
     bool isPof = false;
     switch (multi_shm()->multiDetectorType) {
     case JUNGFRAU:
@@ -1361,9 +1361,10 @@ std::vector<char> DetectorImpl::readProgrammingFile(const std::string &fname) {
         throw RuntimeError("Program FPGA: Could not close destination file");
     }
     LOG(logINFOBLUE) << "File has been converted to " << destfname;
-*/
+
     // loading dst file to memory
-    FILE *fp = fopen("/tmp/SLS_DET_MCB.tzgmUT", "r");
+   // FILE *fp = fopen("/tmp/SLS_DET_MCB.tzgmUT", "r");
+    FILE *fp = fopen(destfname, "r");
     if (fp == nullptr) {
         throw RuntimeError("Program FPGA: Could not open rawbin file");
     }
diff --git a/slsDetectorSoftware/src/Module.cpp b/slsDetectorSoftware/src/Module.cpp
index 92e6c4c99..db63991ce 100644
--- a/slsDetectorSoftware/src/Module.cpp
+++ b/slsDetectorSoftware/src/Module.cpp
@@ -3477,7 +3477,7 @@ void Module::programFPGAviaBlackfin(std::vector<char> buffer) {
     LOG(logINFO) << "Checksum verified for module " << moduleIndex << " ("
                  << shm()->hostname << ")";
 
-    // erasing flash
+    // simulating erasing flash
     {
         LOG(logINFO) << "Erasing Flash for module " << moduleIndex << " ("
                     << shm()->hostname << ")";
@@ -3533,6 +3533,7 @@ void Module::programFPGAviaNios(std::vector<char> buffer) {
     strcpy(cChecksum, checksum.c_str());
     client.Send(cChecksum);
 
+    // validate file size before sending program
     if (client.Receive<int>() == FAIL) {
         std::ostringstream os;
         os << "Detector " << moduleIndex << " (" << shm()->hostname << ")"
@@ -3540,6 +3541,49 @@ void Module::programFPGAviaNios(std::vector<char> buffer) {
         throw RuntimeError(os.str());
     }
     client.Send(buffer);
+
+    // simulating erasing flash
+    {
+        LOG(logINFO) << "(Simulating) Erasing Flash for module " << moduleIndex << " ("
+                    << shm()->hostname << ")";
+        printf("%d%%\r", 0);
+        std::cout << std::flush;
+        // erasing takes 10 seconds, printing here (otherwise need threads
+        // in server-unnecessary)
+        const int ERASE_TIME = 10;
+        int count = ERASE_TIME + 1;
+        while (count > 0) {
+            std::this_thread::sleep_for(std::chrono::seconds(1));
+            --count;
+            printf(
+                "%d%%\r",
+                static_cast<int>(
+                    (static_cast<double>(ERASE_TIME - count) / ERASE_TIME) * 100));
+            std::cout << std::flush;
+        }
+        printf("\n");
+    }
+
+    // simulating writing to flash
+    {
+        LOG(logINFO) << "(Simulating) Writing to Flash for module " << moduleIndex << " (" << shm()->hostname << ")";
+        printf("%d%%\r", 0);
+        std::cout << std::flush;
+        // writing takes 45 seconds, printing here (otherwise need threads
+        // in server-unnecessary)
+        const int ERASE_TIME = 45;
+        int count = ERASE_TIME + 1;
+        while (count > 0) {
+            std::this_thread::sleep_for(std::chrono::seconds(1));
+            --count;
+            printf(
+                "%d%%\r",
+                static_cast<int>(
+                    (static_cast<double>(ERASE_TIME - count) / ERASE_TIME) * 100));
+            std::cout << std::flush;
+        }
+        printf("\n");
+    }
     if (client.Receive<int>() == FAIL) {
         std::ostringstream os;
         os << "Detector " << moduleIndex << " (" << shm()->hostname << ")"
@@ -3547,6 +3591,6 @@ void Module::programFPGAviaNios(std::vector<char> buffer) {
         throw RuntimeError(os.str());
     }
     LOG(logINFO) << "FPGA programmed successfully";
-    rebootController();
+    //rebootController();
 }
 } // namespace sls
diff --git a/slsSupportLib/include/sls/versionAPI.h b/slsSupportLib/include/sls/versionAPI.h
index f2ca9f43a..d68d0b231 100644
--- a/slsSupportLib/include/sls/versionAPI.h
+++ b/slsSupportLib/include/sls/versionAPI.h
@@ -6,8 +6,8 @@
 
 #define APICTB 0x210909
 #define APIGOTTHARD 0x210909
-#define APIGOTTHARD2 0x210909
-#define APIJUNGFRAU 0x210909
 #define APIMYTHEN3 0x210909
 #define APIMOENCH 0x210909
 #define APIEIGER 0x210909
+#define APIJUNGFRAU 0x210913
+#define APIGOTTHARD2 0x210914