diff --git a/fetch-rom-dsk.sh b/fetch-rom-dsk.sh
index 519e1df..82b6a5d 100755
--- a/fetch-rom-dsk.sh
+++ b/fetch-rom-dsk.sh
@@ -2,12 +2,11 @@
 set -xe
 
 if ! [ -f rom.bin ]; then
-    curl -L 'https://ia902205.us.archive.org/view_archive.php?archive=/18/items/mac_rom_archive_-_as_of_8-19-2011/mac_rom_archive_-_as_of_8-19-2011.zip&file=4D1F8172%20-%20MacPlus%20v3.ROM' > rom.bin
+    curl -L 'https://archive.org/download/mac_rom_archive_-_as_of_8-19-2011/mac_rom_archive_-_as_of_8-19-2011.zip/4D1F8172%20-%20MacPlus%20v3.ROM' > rom.bin
 fi
 
 if ! [ -f umac0ro.img ]; then
-    if ! [ -f os.7z ]; then
-        curl -L 'https://archive.org/download/apple-mac-os-system-3.2-finder-5.3-system-tools-1.0-512-ke-jun-1986-3.5-800k.-7z/Apple%20Mac%20OS%20%28System%203.2%20Finder%205.3%29%20%28System%20Tools%201.0%20Mac%20128%2C%20512K%29%20%28Jun%201986%29%20%283.5-400k%29.7z' > 'os.7z'
-    fi
-    7z x -so 'os.7z' 'Apple Mac OS (System 3.2 Finder 5.3) (System Tools 1.0 Mac 128, 512K) (Jun 1986) (3.5-400k)/System Installation.img' > umac0ro.img
+    curl -L 'https://archive.org/download/mac_MacOS_6.0.8/MacOS_6.0.8_System_Startup.img' > 'umac0ro.img'
 fi
+
+sha256sum -c roms.sha256sum
diff --git a/roms.sha256sum b/roms.sha256sum
new file mode 100644
index 0000000..681a213
--- /dev/null
+++ b/roms.sha256sum
@@ -0,0 +1,2 @@
+dd908e2b65772a6b1f0c859c24e9a0d3dcde17b1c6a24f4abd8955846d7895e7 *rom.bin
+464ff9b8a55b0a8fe10d394b411f9c753fcd9d477c0d2f1118ce9927b19bee54 *umac0ro.img