diff --git a/tools/extract_boot_files/extract-ramdisk.pl b/tools/extract_boot_files/extract-ramdisk.pl
index 9d66c22..8177b2e 100755
--- a/tools/extract_boot_files/extract-ramdisk.pl
+++ b/tools/extract_boot_files/extract-ramdisk.pl
@@ -29,12 +29,24 @@
 
 my($ram1) = substr($bootimg, $ram1Addr, $ram1Size);
 
-if (substr($ram1, 0, 2) ne "\x1F\x8B")
+my $compressformat = "gz";
+my $compressprogram = "gzip -d -c";
+
+if (substr($ram1, 0, 2) eq "\x1F\x8B")
+{
+       $compressformat = "gz";
+       $compressprogram = "gzip -d -c";
+}
+elsif (substr($ram1, 0, 2) eq "\x02\x21")
 {
-	die "The boot image does not appear to contain a valid gzip file";
+       $compressformat = "lz4";
+       $compressprogram = "lz4c -d";
+}
+else{
+	die "The boot image does not appear to contain a valid gzip or lz4 file";
 }
 
-open (RAM1FILE, ">$ARGV[0]-ramdisk.cpio.gz");
+open (RAM1FILE, ">$ARGV[0]-ramdisk.cpio.$compressformat");
 binmode(RAM1FILE);
 print RAM1FILE $ram1 or die;
 close RAM1FILE;
@@ -46,5 +58,5 @@
 
 mkdir "$ARGV[0]-ramdisk" or die;
 chdir "$ARGV[0]-ramdisk" or die;
-system ("gzip -d -c ../$ARGV[0]-ramdisk.cpio.gz | cpio -i");
-system ("rm -f ../$ARGV[0]-ramdisk.cpio.gz");
+system ("$compressprogram ../$ARGV[0]-ramdisk.cpio.$compressformat | cpio -i");
+system ("rm -f ../$ARGV[0]-ramdisk.cpio.$compressformat");