diff --git a/apps/settings.c b/apps/settings.c
index a99d7244d4..39ec4086dc 100644
--- a/apps/settings.c
+++ b/apps/settings.c
@@ -878,9 +878,10 @@ bool settings_load_config(char* file)
             set_sound(value, SOUND_BALANCE, &global_settings.balance);
         else if (!strcasecmp(name, "channels")) {
             static char* options[] = {
-                "stereo","mono","mono left","mono right"};
+                "stereo","stereo narrow","mono","mono left",
+                "mono right","karaoke","stereo wide"};
             set_cfg_option(&global_settings.channel_config, value,
-                           options, 4);
+                           options, 7);
         }
         else if (!strcasecmp(name, "wps")) {
             if (wps_load(value,false))
@@ -941,6 +942,8 @@ bool settings_load_config(char* file)
         }
         else if (!strcasecmp(name, "scrollbar"))
             set_cfg_bool(&global_settings.scrollbar, value);
+        else if (!strcasecmp(name, "invert"))
+            set_cfg_bool(&global_settings.invert, value);
 #endif
         else if (!strcasecmp(name, "shuffle"))
             set_cfg_bool(&global_settings.playlist_shuffle, value);
@@ -1000,8 +1003,10 @@ bool settings_load_config(char* file)
             set_sound(value, SOUND_LOUDNESS, &global_settings.loudness);
         else if (!strcasecmp(name, "bass boost"))
             set_sound(value, SOUND_SUPERBASS, &global_settings.bass_boost);
-        else if (!strcasecmp(name, "auto volume"))
-            set_sound(value, SOUND_AVC, &global_settings.avc);
+        else if (!strcasecmp(name, "auto volume")) {
+            static char* options[] = {"off", "2", "4", "8" };
+            set_cfg_option(&global_settings.avc, value, options, 4);
+        }
         else if (!strcasecmp(name, "rec mic gain"))
             set_sound(value, SOUND_MIC_GAIN, &global_settings.rec_mic_gain);
         else if (!strcasecmp(name, "rec left gain"))
diff --git a/docs/CUSTOM_CFG_FORMAT b/docs/CUSTOM_CFG_FORMAT
index 9ce9daafe7..26d57e7c7c 100644
--- a/docs/CUSTOM_CFG_FORMAT
+++ b/docs/CUSTOM_CFG_FORMAT
@@ -18,7 +18,8 @@ volume                 (0 - 100)
 bass                   (-15 - 15)
 treble                 (-15 - 15)
 balance                (-100 - 100)
-channels               (stereo, mono, mono left, mono right)
+channels               (stereo, stereo narrow, stereo wide,
+                        mono, mono left, mono right, karaoke)
 
 shuffle                (on, off)
 repeat                 (off, all, one)
@@ -54,7 +55,7 @@ Recorder-specific settings (allowed values) [unit]
 ---------------------------------------------------
 loudness               (0 - 17)
 bass boost             (0 - 100)
-auto volume            (0=off, 1=2s, 2=4s, 3=8s)
+auto volume            (off, 2, 4, 8) [seconds]
 
 peak meter release     (1 - 126)
 peak meter hold        (off, 200ms, 300ms, 500ms,
@@ -74,6 +75,7 @@ volume display         (graphic, numeric)
 battery display        (graphic, numeric)
 time format            (12hour, 24hour)
 font                   (/path/filename.fnt)
+invert                 (on, off)
 
 deep discharge         (on, off)
 trickle charge         (on, off)