diff --git a/Bootload/AfterburnerV3.1.5.bin b/Bootload/AfterburnerV3.1.5.bin
deleted file mode 100644
index 264c9a9..0000000
Binary files a/Bootload/AfterburnerV3.1.5.bin and /dev/null differ
diff --git a/Bootload/AfterburnerV3.1.9.bin b/Bootload/AfterburnerV3.1.9.bin
new file mode 100644
index 0000000..525bcaf
Binary files /dev/null and b/Bootload/AfterburnerV3.1.9.bin differ
diff --git a/Bootload/COM.bat b/Bootload/COM.bat
index cc23a40..b815e4d 100644
--- a/Bootload/COM.bat
+++ b/Bootload/COM.bat
@@ -1,5 +1,5 @@
 REM Firmware
-esptool.exe --chip esp32 --port COM5 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0xe000 boot_app0.bin 0x1000 bootloader_qio_80m.bin 0x10000 AfterburnerV3.1.5.bin 0x8000 Afterburner.partitions.bin
+esptool.exe --chip esp32 --port COM5 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0xe000 boot_app0.bin 0x1000 bootloader_qio_80m.bin 0x10000 ..\releases\AfterburnerV3.1.9.bin 0x8000 Afterburner.partitions.bin
 REM SPIFFS
 esptool.exe --chip esp32 --port COM5 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_size detect 0x3d0000 spiffs.bin
  
diff --git a/platformio.ini b/platformio.ini
index b244765..3f725c6 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -25,7 +25,7 @@ upload_protocol = esptool
 extra_scripts = post:add_CRC.py
 ; replace shitty Arduino millis with a linear time version
 build_flags = 
-  -Wl,--wrap,millis 
+  -Wl,--wrap,millis
 debug_tool = esp-prog
 ;upload_protocol = esp-prog
-debug_init_break = 
\ No newline at end of file
+debug_init_break = 
diff --git a/src/Afterburner.cpp b/src/Afterburner.cpp
index 16ad569..d12d0c1 100644
--- a/src/Afterburner.cpp
+++ b/src/Afterburner.cpp
@@ -125,9 +125,9 @@
 #define RX_DATA_TIMOUT 50
 
 const int FirmwareRevision = 31;
-const int FirmwareSubRevision = 7;
-const int FirmwareMinorRevision = 6;
-const char* FirmwareDate = "9 Jan 2020";
+const int FirmwareSubRevision = 9;
+const int FirmwareMinorRevision = 0;
+const char* FirmwareDate = "14 Jan 2020";
 
 
 #ifdef ESP32
@@ -1512,9 +1512,13 @@ void checkDebugCommands()
         mode = 2;
       }
       else if(rxVal == 'i') {
-        DebugPort.println("Test fan bytes");
+        DebugPort.println("Test unknown bytes MSB");
         mode = 3;
       }
+      else if(rxVal == 'a') {
+        DebugPort.println("Test unknown bytes LSB");
+        mode = 5;
+      }
       else if(rxVal == 'c') {
         DebugPort.println("Test Command Byte... ");
         mode = 4;
@@ -1525,7 +1529,7 @@ void checkDebugCommands()
         mode = 0;
         DefaultBTCParams.Controller.Command = 0;
       }
-      else if(rxVal == ']') {
+      else if(rxVal == ']') { 
         val++;
         bSendVal = true;
       }
@@ -1595,13 +1599,15 @@ void checkDebugCommands()
           DefaultBTCParams.Controller.GlowDrive = val & 0xff;     // always 0x05
           break;
         case 3:
-          DefaultBTCParams.Controller.Unknown2_MSB = (val >> 8) & 0xff;     // always 0x0d
-          DefaultBTCParams.Controller.Unknown2_LSB = (val >> 0) & 0xff;     // always 0xac  16bit: "3500" ??  Ignition fan max RPM????
+          DefaultBTCParams.Controller.Unknown1_MSB = val & 0xff;     
           break;
         case 4:
           DebugPort.printf("Forced controller command = %d\r\n", val&0xff);
           DefaultBTCParams.Controller.Command = val & 0xff;
           break;
+        case 5:
+          DefaultBTCParams.Controller.Unknown1_LSB = val & 0xff;     
+          break;
       }
     }
 #endif
diff --git a/src/OLED/VersionInfoScreen.cpp b/src/OLED/VersionInfoScreen.cpp
index 7e8850e..704b4d3 100644
--- a/src/OLED/VersionInfoScreen.cpp
+++ b/src/OLED/VersionInfoScreen.cpp
@@ -218,7 +218,7 @@ CVersionInfoScreen::keyHandler(uint8_t event)
     // CENTRE press
     if(event & key_Centre) {
       if(_rowSel == 3) {  // factory enable selection
-        _rowSel = SaveConfirm;
+        _confirmSave();
       }
       else if(_rowSel == 1) {  // firmware update selection
         _rowSel = 20;
diff --git a/src/Protocol/TxManage.cpp b/src/Protocol/TxManage.cpp
index 2f6db9c..f37a202 100644
--- a/src/Protocol/TxManage.cpp
+++ b/src/Protocol/TxManage.cpp
@@ -151,6 +151,7 @@ CTxManage::PrepareFrame(const CProtocol& basisFrame, bool isBTCmaster)
     }
     else {
       m_TxFrame.setAltitude(3500);  // default height - yes it is weird, but that's what the simple controllers send!
+//      m_TxFrame.setAltitude(0);  // default height - yes it is weird, but that's what the simple controllers send!
     }
 
     float tActual = getTemperatureSensor();