diff --git a/ovos_i2c_detection/__init__.py b/ovos_i2c_detection/__init__.py
index d4d057e..ebbeed6 100644
--- a/ovos_i2c_detection/__init__.py
+++ b/ovos_i2c_detection/__init__.py
@@ -1,7 +1,7 @@
 import subprocess
 import serial
 from time import sleep
-from pathlib import Path
+from ovos_utils.log import LOG
 
 def is_texas_tas5806():
     cmd = 'i2cdetect -y -a 1 0x2f 0x2f | egrep "(2f|UU)" | awk \'{print $2}\''
@@ -58,24 +58,24 @@ def is_adafruit_amp():
 
 def is_mark_1():
     if is_wm8960():
-        SER_PORTS = ["serial0", "ttyS0", "ttyAMA0"]
         try:
-            for port in SER_PORTS:
-                s_port = Path(f"/dev/{port}")
-                if s_port.exists():
-                    s_port = str(s_port)
-                    ser = serial.Serial(s_port, 9600, timeout=5)
-                    ser.write(b'system.version')
-                    while True:
-                        is_mk1 = ser.readline().decode().rstrip()
-                        if is_mk1 and "Command" in is_mk1:
-                            ser.close()
-                            # This is a Mark 1
-                            return True
-                        break
+            ser = serial.Serial("/dev/ttyAMA0", 9600, timeout=5)
+            ser.write(b'system.version')
+            while ser.is_open:
+                is_mk1 = ser.readline().decode().rstrip()
+                if is_mk1 and "Command" in is_mk1:
+                    # Check for a version
+                    mk1_ver = ser.readline().decode().rstrip()
+                    # New versions of the firmware will return a version that needs read to continue
+                    if mk1_ver:
+                        LOG.debug(f"Firmware version {mk1_ver}")
                     ser.close()
+                    # This is a Mark 1
+                    return True
                 ser.close()
-                return False
-        except:
+            ser.close()
+            return False
+        except Exception as e:
+            LOG.error(e)
             return False