diff --git a/0_5407_1/MCU1-SG-Ver0000-C366-CK.bin b/0_5407_1/MCU1-SG-Ver0000-C366-CK.bin
new file mode 100644
index 0000000..1e7d1a9
Binary files /dev/null and b/0_5407_1/MCU1-SG-Ver0000-C366-CK.bin differ
diff --git a/0_5407_1/MCU1-SG-Ver0000-C366-CK.bin.DIGEST b/0_5407_1/MCU1-SG-Ver0000-C366-CK.bin.DIGEST
new file mode 100644
index 0000000..4eb81e6
--- /dev/null
+++ b/0_5407_1/MCU1-SG-Ver0000-C366-CK.bin.DIGEST
@@ -0,0 +1 @@
+f917f1f20960c75fd8f8a07d680d8b290e70523bb01bbd27436e8831712c7b35  MCU1-SG-Ver0000-C366-CK.bin
diff --git a/0_5407_1/check-sha-digests.sh b/0_5407_1/check-sha-digests.sh
new file mode 100644
index 0000000..4642bfd
--- /dev/null
+++ b/0_5407_1/check-sha-digests.sh
@@ -0,0 +1,5 @@
+# loop over all *.bin.DIGEST files
+
+for filename in *.bin.DIGEST; do
+    shasum -a 256 -c $filename
+done
diff --git a/0_5407_1/create-sha-digests.sh b/0_5407_1/create-sha-digests.sh
new file mode 100644
index 0000000..ecf866a
--- /dev/null
+++ b/0_5407_1/create-sha-digests.sh
@@ -0,0 +1,8 @@
+# bash script that runs shasum on all *.bin files in this directory
+# and creates a file called $filename.DIGEST
+
+# loop over all *.bin files
+for filename in *.bin; do
+    # create a file called $filename.DIGEST
+    shasum -a 256 $filename > $filename.DIGEST
+done
diff --git a/0_5407_1/enumerate-versions.sh b/0_5407_1/enumerate-versions.sh
new file mode 100644
index 0000000..16a6121
--- /dev/null
+++ b/0_5407_1/enumerate-versions.sh
@@ -0,0 +1 @@
+for i in {0..99} ; do wget -nc http://47.254.36.66/0_5407_1/MCU1-SG-Ver0000-C3$i-CK.bin ; done
\ No newline at end of file