diff --git a/Cart_Reader/Cart_Reader.ino b/Cart_Reader/Cart_Reader.ino
index fdbb6f3..a9e969f 100644
--- a/Cart_Reader/Cart_Reader.ino
+++ b/Cart_Reader/Cart_Reader.ino
@@ -2,8 +2,8 @@
                     Cartridge Reader for Arduino Mega2560
 
    Author:           sanni
-   Date:             2018-01-09
-   Version:          V30H
+   Date:             2018-02-02
+   Version:          V30I
 
    SD  lib:         https://github.com/greiman/SdFat
    LCD lib:         https://github.com/adafruit/Adafruit_SSD1306
@@ -35,7 +35,7 @@
    infinest - help with GB Memory cart
 
 **********************************************************************************/
-char ver[5] = "V30H";
+char ver[5] = "V30I";
 
 /******************************************
    Define Starting Point
@@ -64,6 +64,12 @@ char ver[5] = "V30H";
 #define sdSpeed SPI_FULL_SPEED
 //#define sdSpeed SPI_HALF_SPEED
 
+/******************************************
+   Options
+******************************************/
+// If set to 1 then the crc32 checksum will be calculated after reading a N64 rom
+boolean n64crc = 1;
+
 /******************************************
    Libraries
  *****************************************/
diff --git a/Cart_Reader/N64.ino b/Cart_Reader/N64.ino
index d17ee2d..bddb605 100644
--- a/Cart_Reader/N64.ino
+++ b/Cart_Reader/N64.ino
@@ -2082,7 +2082,7 @@ void readRom_N64() {
   foldern = foldern + 1;
   EEPROM_writeAnything(10, foldern);
 
-  //readn64rom:
+readn64rom:
   // Open file on sd card
   if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
     print_Error(F("SD Error"), true);
@@ -2111,7 +2111,8 @@ void readRom_N64() {
   // Close the file:
   myFile.close();
 
-  /*calcn64crc:
+  if (n64crc) {
+calcn64crc:
     // Calculate Checksum and convert to string
     println_Msg(F("Calculating CRC.."));
     display_Update();
@@ -2125,10 +2126,6 @@ void readRom_N64() {
     if (searchCRC(crcStr)) {
       // Dump was a known good rom
       println_Msg(F("Checksum matches"));
-      println_Msg(F(""));
-      println_Msg(F("Press Button..."));
-      display_Update();
-      wait();
     }
     else {
       // Dump was bad or unknown
@@ -2184,7 +2181,8 @@ void readRom_N64() {
           break;
       }
     }
-    display_Update();*/
+    display_Update();
+  }
   println_Msg(F("Done."));
   println_Msg(F(""));
   println_Msg(F("Press Button..."));