diff --git a/OpenBCI_GUI/BoardGanglion.pde b/OpenBCI_GUI/BoardGanglion.pde
index 27a63aeec..55b55d4be 100644
--- a/OpenBCI_GUI/BoardGanglion.pde
+++ b/OpenBCI_GUI/BoardGanglion.pde
@@ -24,6 +24,24 @@ class BoardGanglionNative extends BoardGanglion {
             }
         }
     }
+    
+    //Temporary fix for Ganglion firmware on Mac
+    public BoardGanglionNative(String name, boolean showUpgradePopup, boolean usingV3Firmware) {
+        super();
+        this.boardName = name;
+
+        if (usingV3Firmware) {
+            this.firmwareVersion = 3;
+            output("Detected Ganglion firmware version 3");
+        }
+        else {
+            this.firmwareVersion = 2;
+            output("Detected Ganglion firmware version 2");
+            if (showUpgradePopup) {
+                PopupMessage msg = new PopupMessage("Warning", "Ganglion firmware version 2 detected. Please update to version 3 for better performance. \n\nhttps://docs.openbci.com/Ganglion/GanglionProgram");
+            }
+        }
+    }
 
     @Override
     protected BrainFlowInputParams getParams() {
@@ -89,6 +107,25 @@ class BoardGanglionBLE extends BoardGanglion {
         }
     }
 
+    //Temporary fix for Ganglion firmware on Mac
+    public BoardGanglionBLE(String deviceName, String serialPort, String macAddress, boolean showUpgradePopup, boolean usingV3Firmware) {
+        super();
+        this.serialPort = serialPort;
+        this.macAddress = macAddress;
+
+        if (usingV3Firmware) {
+            this.firmwareVersion = 3;
+            output("Detected Ganglion firmware version 3");
+        }
+        else {
+            this.firmwareVersion = 2;
+            if (showUpgradePopup) {
+                PopupMessage msg = new PopupMessage("Warning", "Ganglion firmware version 2 detected. Please update to version 3 for better performance. \n\nhttps://docs.openbci.com/Ganglion/GanglionProgram");
+            }
+            output("Detected Ganglion firmware version 2");
+        }
+    }
+
     @Override
     public BoardIds getBoardId() {
         return BoardIds.GANGLION_BOARD;
diff --git a/OpenBCI_GUI/ControlPanel.pde b/OpenBCI_GUI/ControlPanel.pde
index 840934113..0dd95c2a2 100644
--- a/OpenBCI_GUI/ControlPanel.pde
+++ b/OpenBCI_GUI/ControlPanel.pde
@@ -676,6 +676,10 @@ class BLEBox {
     private MenuList bleList;
     private Button refreshBLE;
     Map<String, String> bleMACAddrMap = new HashMap<String, String>();
+    private final int BUTTON_HEIGHT = 24;
+
+    private Button v2FirmwareButton;
+    private Button v3FirmwareButton;
 
     BLEBox(int _x, int _y, int _w, int _h, int _padding) {
         x = _x;
@@ -691,6 +695,17 @@ class BLEBox {
 
         createRefreshBLEButton("refreshGanglionBLEButton", "START SEARCH", x + padding, y + padding*4 + 72 + 8, w - padding*5, 24);
         createGanglionBLEMenuList(bleBox_cp5, "bleList", x + padding, y + padding*3 + 8, w - padding*2, 72, p3);
+        
+        //Temporary fix for Mac OS X and Ganglion BLE
+        if (isMac()) {
+            h = 140 + _padding * 2 + BUTTON_HEIGHT;
+            int buttonWidth = (w-padding*3)/2;
+            int buttonY = y + h - padding - BUTTON_HEIGHT;
+            createV2FirmwareButton("v2FirmwareButton", "V2 FIRMWARE", x + padding, buttonY, buttonWidth, BUTTON_HEIGHT);
+            createV3FirmwareButton("v3FirmwareButton", "V3 FIRMWARE", x + padding + buttonWidth + padding, buttonY, buttonWidth, BUTTON_HEIGHT);
+        }
+        
+
     }
 
     public void update() {
@@ -835,6 +850,41 @@ class BLEBox {
             }
         });
     }
+
+    //Temporary fix for Ganglion firmware on Mac
+    private void createV2FirmwareButton(String name, String text, int _x, int _y, int _w, int _h) {
+        v2FirmwareButton = createButton(bleBox_cp5, name, text, _x, _y, _w, _h);
+        v2FirmwareButton.setSwitch(true);
+        if (usingGanglionV3andMacOS) {
+            v2FirmwareButton.setOff();
+        } else {
+            v2FirmwareButton.setOn();
+        }
+        v2FirmwareButton.setOn();
+        v2FirmwareButton.onRelease(new CallbackListener() {
+            public void controlEvent(CallbackEvent theEvent) {
+                v3FirmwareButton.setOff();
+                usingGanglionV3andMacOS = false;
+            }
+        });
+    }
+
+    //Temporary fix for Ganglion firmware on Mac
+    private void createV3FirmwareButton(String name, String text, int _x, int _y, int _w, int _h) {
+        v3FirmwareButton = createButton(bleBox_cp5, name, text, _x, _y, _w, _h);
+        v3FirmwareButton.setSwitch(true);
+        if (usingGanglionV3andMacOS) {
+            v3FirmwareButton.setOn();
+        } else {
+            v3FirmwareButton.setOff();
+        }
+        v3FirmwareButton.onRelease(new CallbackListener() {
+            public void controlEvent(CallbackEvent theEvent) {
+                v2FirmwareButton.setOff();
+                usingGanglionV3andMacOS = true;
+            }
+        });
+    }
 };
 
 class WifiBox {
diff --git a/OpenBCI_GUI/OpenBCI_GUI.pde b/OpenBCI_GUI/OpenBCI_GUI.pde
index 54f8de9f5..34f8fe5cb 100644
--- a/OpenBCI_GUI/OpenBCI_GUI.pde
+++ b/OpenBCI_GUI/OpenBCI_GUI.pde
@@ -312,6 +312,8 @@ boolean isFFTFiltered = true; //yes by default ... this is used in dataProcessin
 StringBuilder globalScreenResolution;
 StringBuilder globalScreenDPI;
 
+boolean usingGanglionV3andMacOS = false;
+
 //------------------------------------------------------------------------
 //                       Global Functions
 //------------------------------------------------------------------------
@@ -621,12 +623,20 @@ void initSystem() {
                 String ganglionPort = (String)(controlPanel.bleBox.bleList.getItem(controlPanel.bleBox.bleList.activeItem).get("subline"));
                 String ganglionMac = controlPanel.bleBox.bleMACAddrMap.get(ganglionName);
                 println("MAC address for Ganglion is " + ganglionMac);
-                currentBoard = new BoardGanglionBLE(ganglionName, ganglionPort, ganglionMac, showUpgradePopup);
+                if (isMac()) {
+                    currentBoard = new BoardGanglionBLE(ganglionName, ganglionPort, ganglionMac, showUpgradePopup, usingGanglionV3andMacOS);
+                } else {
+                    currentBoard = new BoardGanglionBLE(ganglionName, ganglionPort, ganglionMac, showUpgradePopup);
+                }
             } else if (selectedProtocol == BoardProtocol.NATIVE_BLE) {
                 String ganglionName = (String)(controlPanel.bleBox.bleList.getItem(controlPanel.bleBox.bleList.activeItem).get("headline"));
                 String ganglionMac = controlPanel.bleBox.bleMACAddrMap.get(ganglionName);
                 println("MAC address for Ganglion is " + ganglionMac);
-                currentBoard = new BoardGanglionNative(ganglionName, showUpgradePopup);
+                if (isMac()) {
+                    currentBoard = new BoardGanglionNative(ganglionName, showUpgradePopup, usingGanglionV3andMacOS);
+                } else {
+                    currentBoard = new BoardGanglionNative(ganglionName, showUpgradePopup);
+                }
             }
             break;
         case DATASOURCE_STREAMING: