Update README.md

Lost a solid hour to this. These settings were not set by default on my version of the RPI imager.

Author: kscottz

README.md

@@ -4,18 +4,26 @@ Setup scripts and tools for the TurtleBot 4 Raspberry Pi.
 
 Visit the [TurtleBot 4 User Manual](https://turtlebot.github.io/turtlebot4-user-manual/software/turtlebot4_setup.html) for more details.
 
-Make sure your Create® 3 is updated to the `I.*.*` firmware; older versions of the firmware are not compatible with ROS 2 Jazzy.
+Prior to starting make sure your Create® 3 is updated to the `I.*.*` firmware; older versions of the firmware are not compatible with ROS 2 Jazzy. 
+You can find [firmware updates and instructions on the iRobot website](https://edu.irobot.com/create3-update). 
+
+To access the RaspberryPi on the TurtleBot4 you will need a 2.5mm hex key to remove the top bolts.
+The RaspberryPi SD card can be difficult to find. It is located on the side of the RaspberryPi facing the Create3 on the side opposite the USB and Ethernet ports. 
 
 # Create an image manually
 
 Follow these instructions if you wish to create a Turtlebot4 image manually.
 
 ## Create an Ubuntu Image
 
-First install the [Raspberry Pi Imager](https://www.raspberrypi.com/software/).
+First install the [Raspberry Pi Imager](https://www.raspberrypi.com/software/) from the website or using the Ubuntu Snap store.
 
-- Insert your SD card into your PC and run the Raspberry Pi Imager. Follow the instructions and install Ubuntu 24.04 Server (64-bit) onto the SD card.
-- Ensure your Raspberry Pi 4 is not powered before inserting the flashed SD card.
+- Ensure your Raspberry Pi 4 is not powered before removing the flashed SD card.
+- Insert your SD card into your PC and run the Raspberry Pi Imager. Follow the instructions to install Ubuntu 24.04 Server (64-bit) onto the SD card.
+- If you use this method **you must configure the operating system customizations prior to imaging the SD card.** Please use the following settings:
+  - Set the default login and password to `ubuntu` / `ubuntu`
+  - Enable SSH 
+  - Set the default wifi network, password, and country to your home network
 - You can set up the Raspberry Pi by either connecting it to your network via Ethernet or by using a keyboard and HDMI monitor via a micro HDMI cable.
 
 ### Ethernet Setup