diff --git a/Cart_Reader/GBA.ino b/Cart_Reader/GBA.ino
index 0199e7af..d6d46371 100644
--- a/Cart_Reader/GBA.ino
+++ b/Cart_Reader/GBA.ino
@@ -1985,7 +1985,7 @@ void idFlashrom_GBA() {
   }
   // F0088H0
   else if (flashid == 0x8812) {
-    cartSize = 0x1000000;
+    cartSize = 0x10000000;
   } else {
     // Send swapped MX29GL128E/MSP55LV128 ID command to flashrom
     writeWord_GAB(0xAAA, 0xAA);
@@ -2023,17 +2023,20 @@ void idFlashrom_GBA() {
 }
 
 boolean blankcheckFlashrom_GBA() {
-  for (unsigned long currSector = 0; currSector < fileSize; currSector += 0x20000) {
-    // Blink led
-    blinkLED();
+  boolean blank = 1;
 
-    for (unsigned long currByte = 0; currByte < 0x20000; currByte += 2) {
-      if (readWord_GBA(currSector + currByte) != 0xFFFF) {
-        return 0;
-      }
+  for (unsigned long currByte = 0; currByte < fileSize; currByte += 2) {
+    // Check if all bytes are 0xFFFF
+    if (readWord_GBA(currByte) != 0xFFFF) {
+      currByte = fileSize;
+      blank = 0;
     }
   }
-  return 1;
+  if (blank) {
+    return 1;
+  } else {
+    return 0;
+  }
 }
 
 void eraseIntel4000_GBA() {
@@ -2205,12 +2208,7 @@ void eraseIntel4400_GBA() {
 }
 
 void eraseF0088H0_GBA() {
-  // If the game is smaller than 16Mbit only erase the needed blocks
-  unsigned long lastBlock = 0xFFFFFF;
-  if (fileSize < 0xFFFFFF)
-    lastBlock = fileSize;
-
-  for (unsigned long currBlock = 0; currBlock < lastBlock; currBlock += 0x40000) {
+  for (unsigned long currBlock = 0; currBlock < fileSize; currBlock += 0x40000) {
     // Unlock Block
     writeWord_GBA(currBlock, 0x60);
     writeWord_GBA(currBlock, 0xD0);
@@ -2324,45 +2322,65 @@ void writeIntel4000_GBA() {
 }
 
 void writeF0088H0_GBA() {
-  byte sdBuffer[1024];
+  byte writeBuffer[1024];
 
   //Initialize progress bar
   uint32_t processedProgressBar = 0;
   uint32_t totalProgressBar = fileSize;
   draw_progressbar(0, totalProgressBar);
 
-  for (unsigned long currBlock = 0; currBlock < fileSize; currBlock += 0x40000) {
-    // Blink led
-    blinkLED();
+  // 32MB max GBA bank size
+  for (unsigned long currBank = 0; currBank < fileSize; currBank += 0x2000000) {
 
-    // Write to flashrom
-    for (unsigned long currSdBuffer = 0; currSdBuffer < 0x40000; currSdBuffer += 1024) {
-      // Fill SD buffer
-      myFile.read(sdBuffer, 1024);
-
-      // Buffered program command
-      writeWord_GBA(currBlock + currSdBuffer, 0xEA);
-      // Write word count (minus 1)
-      writeWord_GBA(currBlock + currSdBuffer, 0x1FF);
-
-      // Write buffer
-      for (word currByte = 0; currByte < 1024; currByte += 2) {
-        // Join two bytes into one word
-        word currWord = ((sdBuffer[currByte + 1] & 0xFF) << 8) | (sdBuffer[currByte] & 0xFF);
-        writeWord_GBA(currBlock + currSdBuffer + currByte, currWord);
-      }
+    // 4MB minimum repro block size
+    for (unsigned long currBlock = 0; currBlock < 0x2000000; currBlock += 0x400000) {
 
-      // Write buffer to flash
-      writeWord_GBA(currBlock + currSdBuffer + 1022, 0xD0);
+      // 256KB flashrom sector size
+      for (unsigned long currSector = 0; currSector < 0x400000; currSector += 0x40000) {
+        // Unlock Sector
+        writeWord_GBA(currBlock + currSector, 0x60);
+        writeWord_GBA(currBlock + currSector, 0xD0);
 
-      // Read the status register at last written address
-      word statusReg = readWord_GBA(currBlock + currSdBuffer + 1022);
-      while ((statusReg | 0xFF7F) != 0xFFFF) {
-        statusReg = readWord_GBA(currBlock + currSdBuffer + 1022);
+        // Blink led
+        blinkLED();
+
+        // 1024B writeBuffer
+        for (unsigned long currWriteBuffer = 0; currWriteBuffer < 0x40000; currWriteBuffer += 1024) {
+          // Fill writeBuffer from SD card
+          myFile.read(writeBuffer, 1024);
+
+          // Buffered program command
+          writeWord_GBA(currBlock + currSector + currWriteBuffer, 0xEA);
+
+          // Check Status register
+          word statusReg = readWord_GBA(currBlock + currSector + currWriteBuffer);
+          while ((statusReg | 0xFF7F) != 0xFFFF) {
+            statusReg = readWord_GBA(currBlock + currSector + currWriteBuffer);
+          }
+
+          // Write word count (minus 1)
+          writeWord_GBA(currBlock + currSector + currWriteBuffer, 0x1FF);
+
+          // Send writeBuffer to flashrom
+          for (word currByte = 0; currByte < 1024; currByte += 2) {
+            // Join two bytes into one word
+            word currWord = ((writeBuffer[currByte + 1] & 0xFF) << 8) | (writeBuffer[currByte] & 0xFF);
+            writeWord_GBA(currBlock + currSector + currWriteBuffer + currByte, currWord);
+          }
+
+          // Write buffer to flash
+          writeWord_GBA(currBlock + currSector + currWriteBuffer + 1022, 0xD0);
+
+          // Read the status register at last written address
+          statusReg = readWord_GBA(currBlock + currSector + currWriteBuffer + 1022);
+          while ((statusReg | 0xFF7F) != 0xFFFF) {
+            statusReg = readWord_GBA(currBlock + currSector + currWriteBuffer + 1022);
+          }
+        }
+        processedProgressBar += 0x40000;
+        draw_progressbar(processedProgressBar, totalProgressBar);
       }
     }
-    processedProgressBar += 0x40000;
-    draw_progressbar(processedProgressBar, totalProgressBar);
   }
 }
 
@@ -2570,7 +2588,16 @@ void flashRepro_GBA() {
       } else if (flashid == 0x8812) {
         println_Msg(F("Erasing..."));
         display_Update();
+        // Set flash bank
+        writeByte_GBA(0x2, 0x0);
+        // Offset within bank
+        writeByte_GBA(0x3, 0x0);
+        // Size
+        writeByte_GBA(0x4, 0x20);
+        delay(500);
+        setROM_GBA();
         eraseF0088H0_GBA();
+        // Reset or blankcheck will fail
         resetF0088H0_GBA();
       } else if (flashid == 0x227E) {
         //if (sectorCheckMX29GL128E_GBA()) {
@@ -2589,68 +2616,64 @@ void flashRepro_GBA() {
         }
         //}
       }
-      /* Skip blankcheck to save time
-        print_Msg(F("Blankcheck..."));
-        display_Update();
-        if (blankcheckFlashrom_GBA()) {
-        println_Msg(FS(FSTRING_OK));
-      */
 
-      //Write flashrom
-      print_Msg(F("Writing "));
-      println_Msg(filePath);
+      print_Msg(F("Blankcheck..."));
       display_Update();
-      if ((flashid == 0x8802) || (flashid == 0x8816)) {
-        writeIntel4000_GBA();
-      } else if (flashid == 0x8812) {
-        writeF0088H0_GBA();
-      } else if (flashid == 0x227E) {
-        if ((romType == 0xC2) || (romType == 0x89) || (romType == 0x20)) {
-          //MX29GL128E (0xC2)
-          //PC28F256M29 (0x89)
-          writeMX29GL128E_GBA();
-        } else if ((romType == 0x1) || (romType == 0x4)) {
-          //MSP55LV128(N)
-          writeMSP55LV128_GBA();
+      if (blankcheckFlashrom_GBA()) {
+        println_Msg(FS(FSTRING_OK));
+        //Write flashrom
+        print_Msg(F("Writing "));
+        println_Msg(filePath);
+        display_Update();
+
+        if ((flashid == 0x8802) || (flashid == 0x8816)) {
+          writeIntel4000_GBA();
+        } else if (flashid == 0x8812) {
+          writeF0088H0_GBA();
+        } else if (flashid == 0x227E) {
+          if ((romType == 0xC2) || (romType == 0x89) || (romType == 0x20)) {
+            //MX29GL128E (0xC2)
+            //PC28F256M29 (0x89)
+            writeMX29GL128E_GBA();
+          } else if ((romType == 0x1) || (romType == 0x4)) {
+            //MSP55LV128(N)
+            writeMSP55LV128_GBA();
+          }
         }
-      }
 
-      // Close the file:
-      myFile.close();
+        // Close the file:
+        myFile.close();
 
-      // Verify
-      print_STR(verifying_STR, 0);
-      display_Update();
-      if (flashid == 0x8802) {
-        // Don't know the correct size so just take some guesses
-        resetIntel_GBA(0x8000);
-        delay(1000);
-        resetIntel_GBA(0x100000);
-        delay(1000);
-        resetIntel_GBA(0x200000);
-        delay(1000);
-      } else if (flashid == 0x8816) {
-        resetIntel_GBA(0x200000);
-        delay(1000);
-      } else if (flashid == 0x8812) {
-        resetF0088H0_GBA();
-        delay(1000);
-      } else if (flashid == 0x227E) {
-        resetMX29GL128E_GBA();
-        delay(1000);
-      }
-      if (verifyFlashrom_GBA() == 1) {
-        println_Msg(FS(FSTRING_OK));
+        // Verify
+        print_STR(verifying_STR, 0);
         display_Update();
-      } else {
-        print_FatalError(F("ERROR"));
-      }
-      /* Skipped blankcheck
+        if (flashid == 0x8802) {
+          // Don't know the correct size so just take some guesses
+          resetIntel_GBA(0x8000);
+          delay(1000);
+          resetIntel_GBA(0x100000);
+          delay(1000);
+          resetIntel_GBA(0x200000);
+          delay(1000);
+        } else if (flashid == 0x8816) {
+          resetIntel_GBA(0x200000);
+          delay(1000);
+        } else if (flashid == 0x8812) {
+          resetF0088H0_GBA();
+          delay(1000);
+        } else if (flashid == 0x227E) {
+          resetMX29GL128E_GBA();
+          delay(1000);
         }
-        else {
-        print_FatalError(F("failed"));
+        if (verifyFlashrom_GBA() == 1) {
+          println_Msg(FS(FSTRING_OK));
+          display_Update();
+        } else {
+          print_FatalError(F("ERROR"));
         }
-      */
+      } else {
+        print_FatalError(F("failed"));
+      }
     } else {
       print_FatalError(open_file_STR);
     }