diff --git a/examples/osd/ota-update/genbackupisr.py b/examples/osd/ota-update/genbackupisr.py
new file mode 100644
index 000000000..ef5096398
--- /dev/null
+++ b/examples/osd/ota-update/genbackupisr.py
@@ -0,0 +1,15 @@
+#!/usr/bin/python
+
+""" Generate backup ISR table from given .hex file
+    Output is written to out.hex
+"""
+
+import sys
+import intelhex
+
+ihex = intelhex.IntelHex (sys.argv [1])
+bin  = ihex.tobinstr () [:0x200]
+
+hex2 = intelhex.IntelHex ()
+hex2.puts (0x1ed00, bin)
+hex2.tofile ("out.hex", format="hex")