diff --git a/README.md b/README.md
index ecbbf83..5de0d75 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,8 @@
 - [kloader5 for iOS 5](https://www.pmbonneau.com/cydia/com.pmbonneau.kloader5_1.2_iphoneos-arm.deb)
 - [kloader_hgsp for iOS 10](https://twitter.com/nyan_satan/status/945203180522045440)
 - [partial-zip](https://github.com/matteyeux/partial-zip)
+- [zenity](https://github.com/GNOME/zenity)
+- [zenity](https://github.com/ncruces/zenity) (macOS)
 - 32-bit bundles are from [OdysseusOTA](https://www.youtube.com/watch?v=Wo7mGdMcjxw), [OdysseusOTA2](https://www.youtube.com/watch?v=fh0tB6fp0Sc), [alitek12](https://www.mediafire.com/folder/b1z64roy512wd/FirmwareBundles), [gjest](https://www.reddit.com/r/jailbreak/comments/6yrzzj/release_firmware_bundles_for_ios_841_ipad21234567/)
 - A7 patches are from [MatthewPierson](https://github.com/MatthewPierson/iPhone-5s-OTA-Downgrade-Patches)
 - [EtasonJB](https://www.theiphonewiki.com/wiki/EtasonJB)
diff --git a/resources/depends.sh b/resources/depends.sh
index 6c61cd0..6784850 100755
--- a/resources/depends.sh
+++ b/resources/depends.sh
@@ -15,6 +15,7 @@ SetToolPaths() {
         ipwndfu="sudo $python ipwndfu"
         rmsigchks="sudo $python rmsigchks.py"
         SimpleHTTPServer="sudo -b $python -m SimpleHTTPServer 8888"
+        zenity="$(which zenity)"
 
     elif [[ $OSTYPE == "darwin"* ]]; then
         platform="macos"
@@ -40,6 +41,7 @@ SetToolPaths() {
         ipwndfu="$python ipwndfu"
         rmsigchks="$python rmsigchks.py"
         SimpleHTTPServer="$python -m SimpleHTTPServer 8888"
+        zenity="./resources/tools/zenity_macos"
 
     elif [[ $OSTYPE == "msys" ]]; then
         platform="win"
diff --git a/resources/downgrade.sh b/resources/downgrade.sh
index 978b224..4be4201 100755
--- a/resources/downgrade.sh
+++ b/resources/downgrade.sh
@@ -88,23 +88,16 @@ Downgrade() {
     echo
 
     if [[ $OSVer == "Other" ]]; then
-        if [[ $platform == "linux" ]]; then
-            Input "Select your IPSW file in the file selection window."
-            IPSW="$(zenity --file-selection --file-filter='IPSW | *.ipsw' --title="Select IPSW file")"
-            IPSW="${IPSW%?????}"
-            Log "Selected IPSW file: $IPSW.ipsw"
-            Input "Select your SHSH file in the file selection window."
-            SHSH="$(zenity --file-selection --file-filter='SHSH | *.shsh *.shsh2' --title="Select SHSH file")"
-            Log "Selected SHSH file: $SHSH"
-        else
-            Input "Enter the names of your IPSW and SHSH files below."
-            Echo "* Move/copy the IPSW and SHSH files to the directory where the script is located"
-            Echo "* When entering the names of IPSW and SHSH, enter the full name including the file extension"
-            Echo "* Make sure to create a backup of the SHSH"
-            read -p "$(Input 'Enter name of IPSW file:')" IPSW
-            IPSW="$(basename "$IPSW" .ipsw)"
-            read -p "$(Input 'Enter name of SHSH file:')" SHSH
-        fi
+        Input "Select your IPSW file in the file selection window."
+        IPSW="$($zenity --file-selection --file-filter='IPSW | *.ipsw' --title="Select IPSW file")"
+        [[ ! -s "$IPSW" ]] && Error "No IPSW selected, or IPSW file not found."
+        IPSW="${IPSW%?????}"
+        Log "Selected IPSW file: $IPSW.ipsw"
+        Input "Select your SHSH file in the file selection window."
+        SHSH="$($zenity --file-selection --file-filter='SHSH | *.shsh *.shsh2' --title="Select SHSH file")"
+        [[ ! -s "$SHSH" ]] && Error "No SHSH selected, or SHSH file not found."
+        Log "Selected SHSH file: $SHSH"
+
         unzip -o -j "$IPSW.ipsw" Restore.plist -d tmp
         BuildVer=$(cat tmp/Restore.plist | grep -i ProductBuildVersion -A 1 | grep -oPm1 "(?<=<string>)[^<]+")
         Log "Getting firmware keys for $ProductType-$BuildVer"
diff --git a/resources/tools/zenity_macos b/resources/tools/zenity_macos
new file mode 100755
index 0000000..cfd4e4f
Binary files /dev/null and b/resources/tools/zenity_macos differ