diff --git a/host/lib/write_firmware.py b/host/lib/write_firmware.py
index a8c3182..5312da6 100644
--- a/host/lib/write_firmware.py
+++ b/host/lib/write_firmware.py
@@ -870,6 +870,7 @@
            port number of servo to use.
   """
   write = WriteFirmware(tools, fdt, output, bundle, update, verify)
+  fdt.PutInteger('/config', 'bootsecure', 0)
   write.SelectServo(servo)
   if flash_dest:
     write.text_base = bundle.CalcTextBase('flasher ', fdt, flasher)