diff --git a/Cart_Reader/LJPRO.ino b/Cart_Reader/LJPRO.ino
index 07ed983c..5058409f 100644
--- a/Cart_Reader/LJPRO.ino
+++ b/Cart_Reader/LJPRO.ino
@@ -98,12 +98,6 @@
 //******************************************
 // VARIABLES
 //******************************************
-byte LJPRO[] = {2,4,6,8};
-byte ljprolo = 0; // Lowest Entry
-byte ljprohi = 3; // Highest Entry
-byte ljprosize;
-byte newljprosize;
-
 char mnfID[3];
 char deviceID_str[5];
 boolean ljproflash1found = false;
@@ -118,7 +112,7 @@ byte ljproflash2size;
 // MENU
 //******************************************
 // Base Menu
-static const char* const menuOptionsLJPRO[] PROGMEM = { FSTRING_READ_ROM, FSTRING_SET_SIZE, FSTRING_RESET };
+static const char* const menuOptionsLJPRO[] PROGMEM = { FSTRING_READ_ROM, FSTRING_RESET };
 
 // U1_HOLD#(PH4)    - SNES /IRQ
 // U1_CS#           - SNES A8
@@ -132,8 +126,8 @@ static const char* const menuOptionsLJPRO[] PROGMEM = { FSTRING_READ_ROM, FSTRIN
 
 void ljproMenu()
 {
-  convertPgm(menuOptionsLJPRO, 3);
-  uint8_t mainMenu = question_box(F("LITTLE JAMMER PRO"), menuOptions, 3, 0);
+  convertPgm(menuOptionsLJPRO, 2);
+  uint8_t mainMenu = question_box(F("LITTLE JAMMER PRO"), menuOptions, 2, 0);
 
   switch (mainMenu)
   {
@@ -145,11 +139,6 @@ void ljproMenu()
       break;
 
     case 1:
-      // Set Size
-      setROMSize_LJPRO();
-      break;
-
-    case 2:
       // reset
       resetArduino();
       break;
@@ -198,7 +187,6 @@ void setup_LJPRO()
   PORTA = 0xFF;
   PORTJ |= (1 << 0); // TIME(PJ0)
 
-  checkStatus_LJPRO();
   strcpy(romName, "LJPRO");
 
   mode = CORE_LJPRO;
@@ -207,7 +195,7 @@ void setup_LJPRO()
 //******************************************
 // SERIAL MODE
 //******************************************
-// 25L1605/25L3205
+// 25L4005/25L1605/25L3205/25L6405
 // Default Serial Mode
 
 void sendSerial_U1(uint8_t data)
@@ -266,10 +254,115 @@ uint8_t readSerial_U2()
   return tempdata;
 }
 
+// RDID
+// Manufacturer 0xC2
+// Memory Density 0x20
+// Device ID 0x13 [25L4005]/0x15 [25L1605]/0x16 [25L3205]/0x17 [25L6405]
+
+void readSerialID_U1()
+{
+  CS1_LOW;
+  DDRF = 0x00; // U1 Data Input
+  sendSerial_U1(0x9F); // 0x9F = 10011111
+  // Manufacturer Code
+  byte id0 = readSerial_U1();
+  // Device Code
+  byte id1 = readSerial_U1();
+  byte id2 = readSerial_U1();
+  CS1_HIGH;
+  // Flash ID
+  sprintf(mnfID, "%02X", id0);
+  sprintf(deviceID_str, "%02X%02X", id1, id2);
+  if(strcmp(deviceID_str, "2013") == 0) { // MX25L4005
+    ljproflash1found = 1;
+    ljproflash1size = 1;
+    println_Msg(F("U1 MX25L4005 FOUND"));
+    display_Update();
+  }
+  else if(strcmp(deviceID_str, "2015") == 0) { // MX25L1605
+    ljproflash1found = 1;
+    ljproflash1size = 2;
+    println_Msg(F("U1 MX25L1605 FOUND"));
+    display_Update();
+  }
+  else if (strcmp(deviceID_str, "2016") == 0) { // MX25L3205
+    ljproflash1found = 1;
+    ljproflash1size = 4;
+    println_Msg(F("U1 MX25L3205 FOUND"));
+    display_Update();
+  }
+  else if (strcmp(deviceID_str, "2017") == 0) { // MX25L6405
+    ljproflash1found = 1;
+    ljproflash1size = 8;
+    println_Msg(F("U1 MX25L6405 FOUND"));
+    display_Update();
+  }
+}
+
+void readSerialID_U2()
+{
+  CS2_LOW;
+  DDRC = 0x00; // U2 Data Input
+  sendSerial_U2(0x9F); // 0x9F = 10011111
+  // Manufacturer Code
+  byte id0 = readSerial_U2();
+  // Device Code
+  byte id1 = readSerial_U2();
+  byte id2 = readSerial_U2();
+  CS2_HIGH;
+  // Flash ID
+  sprintf(mnfID, "%02X", id0);
+  sprintf(deviceID_str, "%02X%02X", id1, id2);
+  if(strcmp(deviceID_str, "2013") == 0) { // MX25L4005
+    ljproflash2found = 1;
+    ljproflash2size = 1;
+    println_Msg(F("U2 MX25L4005 FOUND"));
+    display_Update();
+  }
+  else if(strcmp(deviceID_str, "2015") == 0) { // MX25L1605
+    ljproflash2found = 1;
+    ljproflash2size = 2;
+    println_Msg(F("U2 MX25L1605 FOUND"));
+    display_Update();
+  }
+  else if (strcmp(deviceID_str, "2016") == 0) { // MX25L3205
+    ljproflash2found = 1;
+    ljproflash2size = 4;
+    println_Msg(F("U2 MX25L3205 FOUND"));
+    display_Update();
+  }
+  else if (strcmp(deviceID_str, "2017") == 0) { // MX25L6405
+    ljproflash2found = 1;
+    ljproflash2size = 8;
+    println_Msg(F("U2 MX25L6405 FOUND"));
+    display_Update();
+  }
+}
+
+void readSerialData_U1(uint32_t startaddr, uint32_t endaddr)
+{
+  for (uint32_t addr = startaddr; addr < endaddr; addr += 512) {
+    for (int x = 0; x < 512; x++) {
+      sdBuffer[x] = readSerial_U1();
+    }
+    myFile.write(sdBuffer, 512);
+  }
+}
+
+void readSerialData_U2(uint32_t startaddr, uint32_t endaddr)
+{
+  for (uint32_t addr = startaddr; addr < endaddr; addr += 512) {
+    for (int x = 0; x < 512; x++) {
+      sdBuffer[x] = readSerial_U2();
+    }
+    myFile.write(sdBuffer, 512);
+  }
+}
+
 //******************************************
 // PARALLEL MODE
 //******************************************
-// 25L1605/25L3205
+// 25L1605/25L3205/25L6405
 // Parallel Mode - Command 0x55
 // SCLK Frequency 1.2MHz (Cycle 833.33ns)
 // READ 0x03
@@ -327,11 +420,7 @@ void readData_U2(uint32_t startaddr, uint32_t endaddr)
 // RDID
 // Manufacturer 0xC2
 // Memory Density 0x20
-// Device ID 0x15 [25L1605]/0x16 [25L3205]
-
-// REMS
-// Manufacturer 0xC2
-// Device ID 0x14 [25L1605]/0x15 [25L3205]
+// Device ID 0x15 [25L1605]/0x16 [25L3205]/0x17 [25L6405]
 
 void readID_U1() // Parallel Mode
 {
@@ -342,14 +431,11 @@ void readID_U1() // Parallel Mode
   pulseClock_LJPRO(1);
   byte id1 = PINF; // 0x20
   pulseClock_LJPRO(1);
-  byte id2 = PINF; // 0x15 [MX25L1605]/0x16 [MX25L3205]
+  byte id2 = PINF; // 0x15 [MX25L1605]/0x16 [MX25L3205]/0x17 [MX25L6405]
   CS1_HIGH; // U1 HIGH
   // Flash ID
   sprintf(mnfID, "%02X", id0);
   sprintf(deviceID_str, "%02X%02X", id1, id2);
-//  println_Msg(mnfID);
-//  println_Msg(deviceID_str);
-//  display_Update();
   if(strcmp(deviceID_str, "2015") == 0) { // MX25L1605
     ljproflash1found = 1;
     ljproflash1size = 2;
@@ -364,6 +450,13 @@ void readID_U1() // Parallel Mode
     println_Msg(F("U1 MX25L3205 FOUND"));
     display_Update();
   }
+  else if (strcmp(deviceID_str, "2017") == 0) { // MX25L6405
+    ljproflash1found = 1;
+    ljproflash1size = 8;
+    display_Clear();
+    println_Msg(F("U1 MX25L6405 FOUND"));
+    display_Update();
+  }
 }
 
 void readID_U2() // Parallel Mode
@@ -375,15 +468,12 @@ void readID_U2() // Parallel Mode
   pulseClock_LJPRO(1);
   byte id1 = PINC; // 0x20
   pulseClock_LJPRO(1);
-  byte id2 = PINC; // 0x15 [MX25L1605]/0x16 [MX25L3205]
+  byte id2 = PINC; // 0x15 [MX25L1605]/0x16 [MX25L3205]/0x17 [MX25L6405]
   pulseClock_LJPRO(1);
   CS2_HIGH; // U2 HIGH
   // Flash ID
   sprintf(mnfID, "%02X", id0);
   sprintf(deviceID_str, "%02X%02X", id1, id2);
-//  println_Msg(mnfID);
-//  println_Msg(deviceID_str);
-//  display_Update();
   if(strcmp(deviceID_str, "2015") == 0) { // MX25L1605
     ljproflash2found = 1;
     ljproflash2size = 2;
@@ -396,6 +486,12 @@ void readID_U2() // Parallel Mode
     println_Msg(F("U2 MX25L3205 FOUND"));
     display_Update();
   }
+  else if (strcmp(deviceID_str, "2017") == 0) { // MX25L6405
+    ljproflash2found = 1;
+    ljproflash2size = 8;
+    println_Msg(F("U2 MX25L6405 FOUND"));
+    display_Update();
+  }
 }
 
 //******************************************
@@ -411,48 +507,102 @@ void readROM_LJPRO()
   // Test carts only have one 25L1605 (2MB) installed
   // PCB could possibly install two 25L3205 chips (2x4MB = 8MB)
 
-  // Set U1 FLASH to Parallel Mode
-  CS1_LOW; // U1 LOW
-  sendSerial_U1(0x55); // Parallel Mode
-  CS1_HIGH; // U1 HIGH
-  // Read ID
-  readID_U1();
-  // Set U2 FLASH to Parallel Mode
-  CS2_LOW; // U2 LOW
-  sendSerial_U2(0x55); // Parallel Mode
-  CS2_HIGH; // U2 HIGH
-  // Read ID
-  readID_U2();
+  // Little Jammer Pro PCB B1043-03B
+  // Footprints for 25L4005 + 25L6405 chips
+  // U1 = 25L4005 (512KB), U2 = 25L6405 (8MB)
+
+  // Reset Flash Settings
+  ljproflash1found = 0;
+  ljproflash2found = 0;
+  ljproflash1size = 0;
+  ljproflash2size = 0;
+
+  display_Clear();
+  readSerialID_U1();
+  if (!ljproflash1found) {
+    // Set U1 FLASH to Parallel Mode
+    CS1_LOW; // U1 LOW
+    sendSerial_U1(0x55); // Parallel Mode
+    CS1_HIGH; // U1 HIGH
+    readID_U1(); // Read ID using Parallel Mode
+  }
+  readSerialID_U2();
+  if (!ljproflash2found) {
+    // Set U2 FLASH to Parallel Mode
+    CS2_LOW; // U2 LOW
+    sendSerial_U2(0x55); // Parallel Mode
+    CS2_HIGH; // U2 HIGH
+    readID_U2(); // Read ID using Parallel Mode
+  }
+  // NOTE:  Setting Flash to Parallel Mode stays in effect until Power Cycle
 
   // Read U1
   println_Msg(F("Reading U1..."));
   display_Update();
-  CS1_LOW; // U1 LOW
-  DDRF = 0x00; // U1 Data Input
-  sendSerial_U1(0x03); // Read Array (Parallel)
-  sendSerial_U1(0x00); // Address A23-A16
-  sendSerial_U1(0x00); // Address A15-A8
-  sendSerial_U1(0x00); // Address A7-A0
-  readData_U1(0x000000, 0x200000);
-  if (ljproflash1size == 4) { // 4MB
-    readData_U1(0x200000, 0x400000);
+  if (ljproflash1size == 1) { // 25L4005 - Serial Mode
+    CS1_LOW; // U1 LOW
+    DDRF = 0x00; // U1 Data Input
+    sendSerial_U1(0x03); // Read Array
+    sendSerial_U1(0x00); // Address A23-A16
+    sendSerial_U1(0x00); // Address A15-A8
+    sendSerial_U1(0x00); // Address A7-A0
+    readSerialData_U1(0x00000,0x80000); // 512KB
+    CS1_HIGH; // U1 HIGH
+  }
+  else { // 25L1605/25L3205/25L6405 - Parallel Mode
+    // Set U1 FLASH to Parallel Mode
+    CS1_LOW; // U1 LOW
+    sendSerial_U1(0x55); // Parallel Mode
+    CS1_HIGH; // U1 HIGH
+    CS1_LOW; // U1 LOW
+    DDRF = 0x00; // U1 Data Input
+    sendSerial_U1(0x03); // Read Array
+    sendSerial_U1(0x00); // Address A23-A16
+    sendSerial_U1(0x00); // Address A15-A8
+    sendSerial_U1(0x00); // Address A7-A0
+    readData_U1(0x000000, 0x200000); // 2MB
+    if (ljproflash1size > 2) {
+      readData_U1(0x200000, 0x400000); // +2MB = 4MB
+      if (ljproflash1size > 4) {
+        readData_U1(0x400000, 0x800000); // +4MB = 8MB
+      }
+    }
+    CS1_HIGH; // U1 HIGH
   }
-  CS1_HIGH; // U1 HIGH
   if (ljproflash2found) {
     // Read U2
     println_Msg(F("Reading U2..."));
     display_Update();
-    CS2_LOW; // U2 LOW
-    DDRC = 0x00; // U2 Data Input
-    sendSerial_U2(0x03); // Read Array (Parallel)
-    sendSerial_U2(0x00); // Address A23-A16
-    sendSerial_U2(0x00); // Address A15-A8
-    sendSerial_U2(0x00); // Address A7-A0
-    readData_U2(0x000000, 0x200000);
-    if (ljproflash2size == 4) { // 4MB
-      readData_U2(0x200000, 0x400000);
+    if (ljproflash2size == 1) { // 25L4005 - Serial Mode
+      CS2_LOW; // U2 LOW
+      DDRC = 0x00; // U2 Data Input
+      sendSerial_U2(0x03); // Read Array
+      sendSerial_U2(0x00); // Address A23-A16
+      sendSerial_U2(0x00); // Address A15-A8
+      sendSerial_U2(0x00); // Address A7-A0
+      readSerialData_U2(0x00000,0x80000); // 512KB
+      CS2_HIGH; // U2 HIGH
+    }
+    else { // 25L1605/25L3205/25L6405 - Parallel Mode
+      // Set U2 FLASH to Parallel Mode
+      CS2_LOW; // U2 LOW
+      sendSerial_U2(0x55); // Parallel Mode
+      CS2_HIGH; // U2 HIGH
+      CS2_LOW; // U2 LOW
+      DDRC = 0x00; // U2 Data Input
+      sendSerial_U2(0x03); // Read Array
+      sendSerial_U2(0x00); // Address A23-A16
+      sendSerial_U2(0x00); // Address A15-A8
+      sendSerial_U2(0x00); // Address A7-A0
+      readData_U2(0x000000, 0x200000); // 2MB
+      if (ljproflash2size > 2) {
+        readData_U2(0x200000, 0x400000); // +2MB = 4MB
+        if (ljproflash2size > 4) {
+          readData_U2(0x400000, 0x800000); // +4MB = 8MB
+        }
+      }
+      CS2_HIGH; // U2 HIGH
     }
-    CS2_HIGH; // U2 HIGH
   }
   myFile.close();
 
@@ -463,92 +613,4 @@ void readROM_LJPRO()
   display_Update();
   wait(); 
 }
-
-//******************************************
-// ROM SIZE
-//******************************************
-
-#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
-void printRomSize_LJPRO(int index)
-{
-    display_Clear();
-    print_Msg(FS(FSTRING_ROM_SIZE));
-    println_Msg(LJPRO[index]);
-}
-#endif
-
-void setROMSize_LJPRO()
-{
-  byte newljprosize;
-#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
-  display_Clear();
-  if (ljprolo == ljprohi)
-    newljprosize = ljprolo;
-  else {
-    newljprosize = navigateMenu(ljprolo, ljprohi, &printRomSize_LJPRO);
-    
-    display.setCursor(0, 56);  // Display selection at bottom
-  }
-  print_Msg(FS(FSTRING_ROM_SIZE));
-  print_Msg(LJPRO[newljprosize]);
-  println_Msg(F("KB"));
-  display_Update();
-  delay(1000);
-#else
-  if (ljprolo == ljprohi)
-    newljprosize = ljprolo;
-  else {
-setrom:
-    String sizeROM;
-    for (int i = 0; i < (ljprohi - ljprolo + 1); i++) {
-      Serial.print(F("Select ROM Size:  "));
-      Serial.print(i);
-      Serial.print(F(" = "));
-      Serial.print(LJPRO[i + ljprolo]);
-      Serial.println(F("KB"));
-    }
-    Serial.print(F("Enter ROM Size: "));
-    while (Serial.available() == 0) {}
-    sizeROM = Serial.readStringUntil('\n');
-    Serial.println(sizeROM);
-    newljprosize = sizeROM.toInt() + ljprolo;
-    if (newljprosize > ljprohi) {
-      Serial.println(F("SIZE NOT SUPPORTED"));
-      Serial.println(FS(FSTRING_EMPTY));
-      goto setrom;
-    }
-  }
-  Serial.print(F("ROM Size = "));
-  Serial.print(LJPRO[newljprosize]);
-  Serial.println(F("KB"));
-#endif
-  EEPROM_writeAnything(8, newljprosize);
-  ljprosize = newljprosize;
-}
-
-void checkStatus_LJPRO()
-{
-  EEPROM_readAnything(8, ljprosize);
-  if (ljprosize > ljprohi) {
-    ljprosize = 0; // default 2M
-    EEPROM_writeAnything(8, ljprosize);
-  }
-
-#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
-  display_Clear();
-  println_Msg(F("LITTLE JAMMER PRO"));
-  println_Msg(FS(FSTRING_CURRENT_SETTINGS));
-  println_Msg(FS(FSTRING_EMPTY));
-  print_Msg(FS(FSTRING_ROM_SIZE));
-  print_Msg(LJPRO[ljprosize]);
-  println_Msg(F("MB"));
-  display_Update();
-  wait();
-#else
-  Serial.print(FS(FSTRING_ROM_SIZE));
-  Serial.print(LJPRO[ljprosize]);
-  Serial.println(F("MB"));
-  Serial.println(FS(FSTRING_EMPTY));
-#endif
-}
 #endif