diff --git a/firmware/mpeg.c b/firmware/mpeg.c
index f9df3236f2..1a42ee9c2f 100644
--- a/firmware/mpeg.c
+++ b/firmware/mpeg.c
@@ -1353,12 +1353,12 @@ void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, i
 #endif
     
 #ifdef HAVE_MAS3507D
+    mas_readmem(MAS_BANK_D1, 0xff7, &mas_version_code, 1);
+    
     mas_writereg(0x3b, 0x20); /* Don't ask why. The data sheet doesn't say */
     mas_run(1);
     sleep(HZ);
 
-    mas_readmem(MAS_BANK_D1, 0xff7, &mas_version_code, 1);
-
     /* Clear the upper 12 bits of the 32-bit samples */
     mas_writereg(0xc5, 0);
     mas_writereg(0xc6, 0);
@@ -1366,9 +1366,9 @@ void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, i
     /* We need to set the PLL for a 14.1318MHz crystal */
     if(mas_version_code == 0x0601) /* Version F10? */
     {
-        val = 0x5d9e8;
+        val = 0x5d9d0;
         mas_writemem(MAS_BANK_D0, 0x32d, &val, 1);
-        val = 0xfffceb8d;
+        val = 0xfffceceb;
         mas_writemem(MAS_BANK_D0, 0x32e, &val, 1);
         val = 0x0;
         mas_writemem(MAS_BANK_D0, 0x32f, &val, 1);
@@ -1376,14 +1376,15 @@ void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, i
     }
     else
     {
-        val = 0x5d9e8;
+        val = 0x5d9d0;
         mas_writemem(MAS_BANK_D0, 0x36d, &val, 1);
-        val = 0xfffceb8d;
+        val = 0xfffceceb;
         mas_writemem(MAS_BANK_D0, 0x36e, &val, 1);
         val = 0x0;
         mas_writemem(MAS_BANK_D0, 0x36f, &val, 1);
         mas_run(0xfcb);
     }
+    
 #endif
     
     mp3buflen = mp3end - mp3buf;