diff --git a/cmd/ipsw/cmd/img4/img4_dec.go b/cmd/ipsw/cmd/img4/img4_dec.go
index b5dbe036a..57d2b5a16 100644
--- a/cmd/ipsw/cmd/img4/img4_dec.go
+++ b/cmd/ipsw/cmd/img4/img4_dec.go
@@ -36,20 +36,25 @@ import (
 )
 
 func init() {
-	Img4Cmd.AddCommand(decImg4Cmd)
+	Img4Cmd.AddCommand(img4DecCmd)
 
-	decImg4Cmd.PersistentFlags().String("iv-key", "", "AES iv+key")
-	decImg4Cmd.PersistentFlags().StringP("iv", "i", "", "AES iv")
-	decImg4Cmd.PersistentFlags().StringP("key", "k", "", "AES key")
-	decImg4Cmd.PersistentFlags().StringP("output", "o", "", "Output file")
+	img4DecCmd.Flags().String("iv-key", "", "AES iv+key")
+	img4DecCmd.Flags().StringP("iv", "i", "", "AES iv")
+	img4DecCmd.Flags().StringP("key", "k", "", "AES key")
+	img4DecCmd.Flags().StringP("output", "o", "", "Output folder")
+	img4DecCmd.MarkFlagDirname("output")
+	viper.BindPFlag("img4.dec.iv-key", img4DecCmd.Flags().Lookup("iv-key"))
+	viper.BindPFlag("img4.dec.iv", img4DecCmd.Flags().Lookup("iv"))
+	viper.BindPFlag("img4.dec.key", img4DecCmd.Flags().Lookup("key"))
+	viper.BindPFlag("img4.dec.output", img4DecCmd.Flags().Lookup("output"))
 }
 
 // decCmd represents the dec command
-var decImg4Cmd = &cobra.Command{
+var img4DecCmd = &cobra.Command{
 	Use:     "dec <img4>",
 	Aliases: []string{"d"},
 	Short:   "Decrypt img4 payloads",
-	Args:    cobra.MinimumNArgs(1),
+	Args:    cobra.ExactArgs(1),
 	RunE: func(cmd *cobra.Command, args []string) error {
 
 		if viper.GetBool("verbose") {
@@ -58,10 +63,10 @@ var decImg4Cmd = &cobra.Command{
 		color.NoColor = viper.GetBool("no-color")
 
 		// flags
-		outputFile, _ := cmd.Flags().GetString("output")
-		ivkeyStr, _ := cmd.Flags().GetString("iv-key")
-		ivStr, _ := cmd.Flags().GetString("iv")
-		keyStr, _ := cmd.Flags().GetString("key")
+		ivkeyStr := viper.GetString("img4.dec.iv-key")
+		ivStr := viper.GetString("img4.dec.iv")
+		keyStr := viper.GetString("img4.dec.key")
+		outputDir := viper.GetString("img4.dec.output")
 		// validate flags
 		if len(ivkeyStr) != 0 && (len(ivStr) != 0 || len(keyStr) != 0) {
 			return fmt.Errorf("cannot specify both --iv-key AND --iv/--key")
@@ -70,9 +75,10 @@ var decImg4Cmd = &cobra.Command{
 		}
 
 		infile := filepath.Clean(args[0])
+		outfile := infile + ".dec"
 
-		if len(outputFile) == 0 {
-			outputFile = infile + ".dec"
+		if outputDir != "" {
+			outfile = filepath.Join(outputDir, filepath.Base(outfile))
 		}
 
 		var iv []byte
@@ -96,7 +102,7 @@ var decImg4Cmd = &cobra.Command{
 				return fmt.Errorf("failed to decode --iv-key: %v", err)
 			}
 		}
-		utils.Indent(log.Info, 2)(fmt.Sprintf("Decrypting file to %s", outputFile))
-		return icmd.DecryptPayload(infile, outputFile, iv, key)
+		utils.Indent(log.Info, 2)(fmt.Sprintf("Decrypting file to %s", outfile))
+		return icmd.DecryptPayload(infile, outfile, iv, key)
 	},
 }
diff --git a/cmd/ipsw/cmd/img4/img4_extract.go b/cmd/ipsw/cmd/img4/img4_extract.go
index 6ac40d598..4e905686f 100644
--- a/cmd/ipsw/cmd/img4/img4_extract.go
+++ b/cmd/ipsw/cmd/img4/img4_extract.go
@@ -37,7 +37,10 @@ func init() {
 	Img4Cmd.AddCommand(img4ExtractCmd)
 
 	img4ExtractCmd.Flags().Bool("img4", false, "Input file is an IMG4")
-	img4ExtractCmd.Flags().StringP("output", "o", "", "Output file")
+	img4ExtractCmd.Flags().StringP("output", "o", "", "Output folder")
+	img4ExtractCmd.MarkFlagDirname("output")
+	viper.BindPFlag("img4.extract.img4", img4DecCmd.Flags().Lookup("img4"))
+	viper.BindPFlag("img4.extract.output", img4DecCmd.Flags().Lookup("output"))
 	img4ExtractCmd.MarkZshCompPositionalArgumentFile(1)
 }
 
@@ -53,11 +56,14 @@ var img4ExtractCmd = &cobra.Command{
 			log.SetLevel(log.DebugLevel)
 		}
 		color.NoColor = viper.GetBool("no-color")
+		// flags
+		isImg4 := viper.GetBool("img4.extract.img4")
+		outputDir := viper.GetString("img4.extract.output")
 
-		isImg4, _ := cmd.Flags().GetBool("img4")
-		outputDir, _ := cmd.Flags().GetString("output")
-
-		outFile := filepath.Join(outputDir, filepath.Clean(args[0])+".payload")
+		outFile := filepath.Clean(args[0]) + ".payload"
+		if outputDir != "" {
+			outFile = filepath.Join(outputDir, outFile)
+		}
 
 		utils.Indent(log.Info, 2)(fmt.Sprintf("Extracting payload to file %s", outFile))
 		return icmd.ExtractPayload(filepath.Clean(args[0]), outFile, isImg4)
diff --git a/cmd/ipsw/cmd/img4/img4_img3.go b/cmd/ipsw/cmd/img4/img4_img3.go
index 999b67221..9a54bbda0 100644
--- a/cmd/ipsw/cmd/img4/img4_img3.go
+++ b/cmd/ipsw/cmd/img4/img4_img3.go
@@ -34,9 +34,11 @@ import (
 func init() {
 	Img4Cmd.AddCommand(img4Img3Cmd)
 
-	img4Img3Cmd.Flags().StringP("output", "o", "", "Output file")
-	img4Img3Cmd.MarkZshCompPositionalArgumentFile(1)
+	img4Img3Cmd.Flags().StringP("output", "o", "", "Output folder")
+	img4Img3Cmd.MarkFlagDirname("output")
 	viper.BindPFlag("img4.img3.output", img4Img3Cmd.Flags().Lookup("output"))
+
+	img4Img3Cmd.MarkZshCompPositionalArgumentFile(1)
 }
 
 // img4Img3Cmd represents the extract command
@@ -52,7 +54,13 @@ var img4Img3Cmd = &cobra.Command{
 		}
 		color.NoColor = viper.GetBool("no-color")
 
-		outFile := filepath.Join(viper.GetString("output"), filepath.Clean(args[0])+".payload")
+		// flags
+		outputDir := viper.GetString("img4.dec.output")
+
+		outFile := filepath.Clean(args[0]) + ".payload"
+		if outputDir != "" {
+			outFile = filepath.Join(outputDir, outFile)
+		}
 
 		log.Infof("Extracting payload to file %s", outFile)
 		return icmd.ParseImg3(filepath.Clean(args[0]), outFile)
diff --git a/cmd/ipsw/cmd/img4/img4_kbag.go b/cmd/ipsw/cmd/img4/img4_kbag.go
index ee23318bd..e7f8b14e9 100644
--- a/cmd/ipsw/cmd/img4/img4_kbag.go
+++ b/cmd/ipsw/cmd/img4/img4_kbag.go
@@ -47,7 +47,7 @@ var img4KbagCmd = &cobra.Command{
 	Use:           "kbag <IMG4>",
 	Aliases:       []string{"k"},
 	Short:         "Extract kbag from img4",
-	Args:          cobra.MinimumNArgs(1),
+	Args:          cobra.ExactArgs(1),
 	SilenceUsage:  true,
 	SilenceErrors: true,
 	RunE: func(cmd *cobra.Command, args []string) error {