diff --git a/firmware/target/arm/ipod/button-clickwheel.c b/firmware/target/arm/ipod/button-clickwheel.c
old mode 100644
new mode 100755
index 21bbca6..141bde9
--- a/firmware/target/arm/ipod/button-clickwheel.c
+++ b/firmware/target/arm/ipod/button-clickwheel.c
@@ -241,6 +241,22 @@ static inline int ipod_4g_button_read(void)
             }
 
         }
+        else if ((status & 0x800000FF) == 0x8000003A)
+        {
+            wheel_is_touched = true;
+        }
+        else
+        {
+            int v = (unsigned)status >> 4;
+            if ((v == 0xfffffff) || (v == 0x5555555) || (v == 0xaaaaaaa))
+            {
+                /*
+                 * this happens after a Hold switch release
+                 * (status is then fffffffx, aaaaaaax, 5555555x)
+                 */
+                opto_i2c_init();
+            }
+        }
     }
 
 #ifdef HAVE_WHEEL_POSITION
@@ -312,6 +328,8 @@ int button_read_device(void)
         {
             /* unlock -> enable wheel sensor */
             DEV_EN |= DEV_OPTO;
+            button_init_device();
+            ipod_4g_button_int();
         }
     }