diff --git a/flash_your_device b/flash_your_device
index 63f8810..06219b9 100755
--- a/flash_your_device
+++ b/flash_your_device
@@ -39,10 +39,20 @@ case "$(uname -s)" in
     Linux*)
         machine="Linux"
         echo "Detected ${machine}."
-        echo -n "Checking for cmake, git, pip, and venv... "
-        #[ -f /var/lib/apt/lists/lock ] && echo "ERROR: `apt` is locked. Are you installing system updates?" && exit 1
-        sudo apt-get -qq update
-        sudo apt-get -qq install -y -o=Dpkg::Use-Pty=0 cmake git python3-pip python3-venv &> /dev/null
+        echo -n "Checking for cmake, git, pip, and virtualenv... "
+        if ! command -v cmake &>/dev/null; then
+            echo -e "\n\nERROR:\ncmake was not found on your system.\n\nPlease install cmake by running:\n\nsudo apt update && sudo apt install -y cmake\n"
+            exit 1
+        elif ! command -v git &>/dev/null; then
+            echo -e "\n\nERROR:\ngit was not found on your system.\n\nPlease install git by running:\n\nsudo apt update && sudo apt install -y git\n"
+            exit 1
+        elif ! command -v pip &>/dev/null; then
+            echo -e "\n\nERROR:\npip was not found on your system.\n\nPlease install pip by running:\n\nsudo apt update && sudo apt install -y python3-pip\n"
+            exit 1
+        elif ! command -v virtualenv &>/dev/null; then
+            echo -e "\n\nERROR:\nvirtualenv was not found on your system.\n\nPlease install virtualenv by running:\n\nsudo apt update && sudo apt install -y python3-virtualenv\n"
+            exit 1
+        fi
         echo "ok."
         ;;
     Darwin*)
@@ -94,7 +104,7 @@ case "$(uname -s)" in
     *) echo "Unsupported OS: $(uname -s)" && exit 0
 esac
 
-echo -n "Checking for the Espressif IoT Development Framework... "
+echo -n "Checking for the ESP IoT Development Framework... "
 if [ ! -f "${esp_idf_save_directory}"/export.sh ]; then
     echo -ne "\n  Downloading the framework... "
     git -c advice.detachedHead=false clone --branch "${esp_idf_git_tag}" --single-branch --depth 1 --quiet "${esp_idf_repo_url}" "${esp_idf_temp_directory}"
@@ -176,7 +186,11 @@ case "${machine}" in
         while [ ! -c "${tty_device}" ]; do
             read -srn1 -p "Connect your ${chosen_device} and PRESS ANY KEY to continue... " && echo
         done
-        sudo chmod o+rw "${tty_device}"
+        tty_device_permissions="$(stat -c '%a' /dev/ttyACM0)"
+        if [ "${tty_device_permissions:2}" -lt 6 ]; then
+            echo -e "ERROR:\nYou need elevated permissions to write to the device.\nPlease update your device permissoins by running:\n\nsudo chmod o+rw ${tty_device}\n"
+            exit 1
+        fi
         ;;
     macOS*)
         #macos_usb_serial=$(ioreg -p IOUSB -n "USB Single Serial" | grep "USB Serial Number" | cut -c 34-43)