diff --git a/README.md b/README.md
index 47d5128..978aa8b 100644
--- a/README.md
+++ b/README.md
@@ -121,6 +121,8 @@ following settings:
 ```bash
 sudo raspi-config --expand-rootfs
 sudo sed -i s/#dtparam=spi=on/dtparam=spi=on/ /boot/firmware/config.txt
+# note: on older releases, this file is located in /boot/config.txt. If you get an error saying file not found, run the command below:
+sudo sed -i s/#dtparam=spi=on/dtparam=spi=on/ /boot/config.txt
 sudo dpkg-reconfigure tzdata
 
 # If you have the 12.48" display, these steps are also required: