diff --git a/update-sys.ksh b/update-sys.ksh
index 01a3b1b..7c28cf3 100755
--- a/update-sys.ksh
+++ b/update-sys.ksh
@@ -1,9 +1,41 @@
 #!/bin/ksh
 
-pkg_check
-pkg_delete -a
+# update-sys.sh
+# Update all packages, firmware and system software 
+# Copyright (c) 2022, 2023, Scott C. MacCallum (scm@sdf.org)
+# All rights reserved.
+
+# Redistribution and use of this software in source and binary forms, with or
+# without modification, are permitted provided that the following conditions
+# are met:
+
+     # * Redistributions of source code must retain the above copyright notice,
+     # this list of conditions and the following disclaimer.
+
+     # * Neither the name of Scott C. MacCallum nor the names of its
+     # contributors may be used to endorse or promote products derived from
+     # this software without specific prior written permission of Scott C.
+     # MacCallum.
+
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+# Update packages
 pkg_add -u
+
+# Update firmware
 fw_update
+
+# Update system software
 syspatch
 
 exit 0