diff --git a/Add_avrdude_release.sh b/Add_avrdude_release.sh
index 9da802732..55fa4e48d 100755
--- a/Add_avrdude_release.sh
+++ b/Add_avrdude_release.sh
@@ -3,7 +3,7 @@
 AUTHOR=MCUdude      # Github username
 REPOSITORY=MegaCore # Github repo name
 
-AVRDUDE_VERSION="7.2-arduino.1"
+AVRDUDE_VERSION="8.0-arduino.1"
 
 OS_PLATFORM1="Linux_ARMv6"
 OS_PLATFORM2="Linux_ARM64"
@@ -158,4 +158,4 @@ rm $FILE3
 rm $FILE4
 rm $FILE5
 rm $FILE6
-rm "package_${AUTHOR}_${REPOSITORY}_index.json.tmp"
\ No newline at end of file
+rm "package_${AUTHOR}_${REPOSITORY}_index.json.tmp"
diff --git a/avr/bootloaders/urboot/atmega1280/watchdog_1_s/external_oscillator/.DS_Store b/avr/bootloaders/urboot/atmega1280/watchdog_1_s/external_oscillator/.DS_Store
new file mode 100644
index 000000000..39aaf3083
Binary files /dev/null and b/avr/bootloaders/urboot/atmega1280/watchdog_1_s/external_oscillator/.DS_Store differ
diff --git a/package_MCUdude_MegaCore_index.json b/package_MCUdude_MegaCore_index.json
index 218a95467..e1781ce6c 100644
--- a/package_MCUdude_MegaCore_index.json
+++ b/package_MCUdude_MegaCore_index.json
@@ -1378,6 +1378,54 @@
               "url": "http://downloads.arduino.cc/tools/avrdude_7.2-arduino.1_Windows_32bit.tar.gz"
             }
           ]
+        },
+        {
+          "name": "avrdude",
+          "version": "8.0-arduino.1",
+          "systems": [
+            {
+              "size": "1441658",
+              "checksum": "SHA-256:66ae53dac08b2db2f065d7b6b2f60ff62d2a85907613c7b2988fdd1922950b5d",
+              "host": "arm-linux-gnueabihf",
+              "archiveFileName": "avrdude_8.0-arduino.1_Linux_ARMv6.tar.gz",
+              "url": "http://downloads.arduino.cc/tools/avrdude_8.0-arduino.1_Linux_ARMv6.tar.gz"
+            },
+            {
+              "size": "1565761",
+              "checksum": "SHA-256:031f212bdcb77e2ea13895f07ab4a0c254963f8f1bbd3b8797d3363a6a2e95e3",
+              "host": "aarch64-linux-gnu",
+              "archiveFileName": "avrdude_8.0-arduino.1_Linux_ARM64.tar.gz",
+              "url": "http://downloads.arduino.cc/tools/avrdude_8.0-arduino.1_Linux_ARM64.tar.gz"
+            },
+            {
+              "size": "1173108",
+              "checksum": "SHA-256:8a36cf441a3ce21622eb30b40f0b71d27864b30ea851cb795ae654ee10e2c132",
+              "host": "x86_64-apple-darwin12",
+              "archiveFileName": "avrdude_8.0-arduino.1_macOS_64bit.tar.gz",
+              "url": "http://downloads.arduino.cc/tools/avrdude_8.0-arduino.1_macOS_64bit.tar.gz"
+            },
+            {
+              "size": "1476932",
+              "checksum": "SHA-256:1d2edadb07e070fcd016e8c802e961e30bfa606c2db63625c930526e7044aaa6",
+              "host": "x86_64-linux-gnu",
+              "archiveFileName": "avrdude_8.0-arduino.1_Linux_64bit.tar.gz",
+              "url": "http://downloads.arduino.cc/tools/avrdude_8.0-arduino.1_Linux_64bit.tar.gz"
+            },
+            {
+              "size": "1452068",
+              "checksum": "SHA-256:622358355a17cb400060cffbe1f8fc2fd9cea2ee883ab1b7766fd8219e0fc0f9",
+              "host": "i686-linux-gnu",
+              "archiveFileName": "avrdude_8.0-arduino.1_Linux_32bit.tar.gz",
+              "url": "http://downloads.arduino.cc/tools/avrdude_8.0-arduino.1_Linux_32bit.tar.gz"
+            },
+            {
+              "size": "1890359",
+              "checksum": "SHA-256:833aa1a66a8e70cd597fcfdbd7e559a91a00eca1d7aa3be2ce9bcadf7ccb987c",
+              "host": "i686-mingw32",
+              "archiveFileName": "avrdude_8.0-arduino.1_Windows_32bit.tar.gz",
+              "url": "http://downloads.arduino.cc/tools/avrdude_8.0-arduino.1_Windows_32bit.tar.gz"
+            }
+          ]
         }
       ]
     }