Update README.md

Author: timg236

README.md

@@ -5,7 +5,7 @@ This repository contains the scripts and pre-compiled binaries used to create th
 For bootloader support the best place to start is the Raspberry Pi [General Users forum](https://www.raspberrypi.org/forums/viewforum.php?f=63) or for discussion of beta releases try the [Advanced Users forum](https://www.raspberrypi.org/forums/viewforum.php?f=29&sid=9bbc277968ad953e77749b255d0ce3a2)
 
 # Rescue image
-If the Raspberry Pi4 is not booting, then it's very unlikely that the EEPROM is corrupted. If you think it has an invalid image or you want to revert to the factory setting, then download the rescue image from the Raspberry Pi [downloads page](https://www.raspberrypi.org/downloads/)
+If the Raspberry Pi4 is not booting, then it's very unlikely that the EEPROM is corrupted. The first thing that you should check is that the OS image was correctly installed using the Raspberry Pi Imager which is available on the [downloads page](https://www.raspberrypi.org/downloads/). If that doesn't work or you wish to revert EEPROM configuration changes to factory defaults then you can also create an EEPROM recovery SD card image using the Raspberry Pi Imager.
 
 # Bootloader documentation
 * [The boot folder](https://www.raspberrypi.org/documentation/configuration/boot_folder.md)