diff --git a/Firmware/BlankDriveWithFirmware.po b/Firmware/BlankDriveWithFirmware.po
old mode 100755
new mode 100644
index 88dc8b8..9c2d72b
Binary files a/Firmware/BlankDriveWithFirmware.po and b/Firmware/BlankDriveWithFirmware.po differ
diff --git a/Firmware/assemble.sh b/Firmware/assemble.sh
index 7d450e5..409cdd6 100755
--- a/Firmware/assemble.sh
+++ b/Firmware/assemble.sh
@@ -3,3 +3,10 @@ ca65 Warning.asm -o warning.o
 ca65 Firmware.asm -o firmware.o --listing Firmware.lst
 
 ld65 -t none warning.o firmware.o -o Firmware.bin
+# assumes ProDOS-Utilities is in your path: https://github.com/tjboldt/ProDOS-Utilities
+rm BlankDriveWithFirmware.po
+ProDOS-Utilities -c create -d BlankDriveWithFirmware.po -v ROM -s 2048
+ProDOS-Utilities -b 0x0001 -c writeblock -d BlankDriveWithFirmware.po -i Firmware.bin
+ProDOS-Utilities -b 0x0001 -c readblock -d BlankDriveWithFirmware.po
+ProDOS-Utilities -c ls -d BlankDriveWithFirmware.po
+