diff --git a/books/beaglebone-cookbook/01basics/basics.rst b/books/beaglebone-cookbook/01basics/basics.rst
index 02121e0f25207aec7b452901699656a256ff79b5..f96f0876f209c605136ae3d93dbac24f893a346a 100644
--- a/books/beaglebone-cookbook/01basics/basics.rst
+++ b/books/beaglebone-cookbook/01basics/basics.rst
@@ -131,7 +131,7 @@ following the instructions in :ref:`basics_out_of_the_box` to log into the Bone.
 
 .. code-block:: bash
 
-    bone$ cat /ID.txt
+    bone$ cat /etc/dogtag
     BeagleBoard.org Debian Bullseye IoT Image 2023-06-03
 
 I'm running the 2023-06-03 version.
diff --git a/books/beaglebone-cookbook/03displays/displays.rst b/books/beaglebone-cookbook/03displays/displays.rst
index b035731cc0e82ffb0fab76f41511d6a2789fdac1..050947d8ba32913387cac4b47ee7b61c4de5a4fc 100644
--- a/books/beaglebone-cookbook/03displays/displays.rst
+++ b/books/beaglebone-cookbook/03displays/displays.rst
@@ -55,7 +55,7 @@ through *USR3*, but we'll refer to them as the *USER* LEDs.
 
      The four *USER* LEDs
 
-Place the code shown in :ref:`js_internLED_code` in a file called ``internLED.js``. 
+Place the code shown in :ref:`py_internLED_code` in a file called ``internLED.py``. 
 You can do this using VSC to edit files (as shown in :ref:`basics_vsc`) or with 
 a more traditional editor (as shown in :ref:`tips_editing_files`).
 
@@ -67,21 +67,20 @@ a more traditional editor (as shown in :ref:`tips_editing_files`).
 
 :download:`internLED.py <../code/03displays/internLED.py>`
 
-.. _js_internLED_code:
+.. _c_internLED_code:
 
-.. literalinclude:: ../code/03displays/internLED.js
-   :caption: Using an internal LED (internLED.js)
+.. literalinclude:: ../code/03displays/internLED.c
+   :caption: Using an internal LED (internLED.c)
    :linenos:
 
-:download:`internLED.js <../code/03displays/internLED.js>`
+:download:`internLED.c <../code/03displays/internLED.c>`
 
 In the *bash* command window, enter the following commands:
 
 .. code-block:: bash
 
      bone$ cd ~/beaglebone-cookbook-code/03displays
-     bone$ ./internLED.js
-
+     bone$ ./internLED.py
 
 The *USER0* LED should now be flashing.
 
diff --git a/books/beaglebone-cookbook/05tips/tips.rst b/books/beaglebone-cookbook/05tips/tips.rst
index 988e040ea4cd9d72b7eade7ef76d48bd9cbcaee2..612ea8bdbc6c5897682410b5282665f54568cde7 100644
--- a/books/beaglebone-cookbook/05tips/tips.rst
+++ b/books/beaglebone-cookbook/05tips/tips.rst
@@ -380,9 +380,8 @@ Log in to your Bone and enter the following command:
    BeagleBoard.org Debian Bullseye IoT Image 2023-06-03
 
 
-:ref:`basics_latest_os` shows how to open the ``ID.txt`` file to see the OS version. 
-The ``/etc/dogtag`` file has the same contents and is easier to find if you already 
-have a command prompt. See :ref:`basics_install_os` if you need to update your OS.
+:ref:`basics_latest_os` shows how to open the ``/etc/dogtag`` file to see the OS version. 
+See :ref:`basics_install_os` if you need to update your OS.
 
 Controlling the Bone Remotely with a VNC
 =========================================