diff --git a/fhem/FHEM/lib/Device/Firmata/Constants.pm b/fhem/FHEM/lib/Device/Firmata/Constants.pm
index f2351adcf..d7d976751 100644
--- a/fhem/FHEM/lib/Device/Firmata/Constants.pm
+++ b/fhem/FHEM/lib/Device/Firmata/Constants.pm
@@ -249,6 +249,59 @@ use constant (
 
 		},    # /Constants for Version 2.4
 
+		V_2_05 => {
+
+			MAX_DATA_BYTES => 64,    # max number of data bytes in non-Sysex messages
+
+			# message command bytes (128-255/0x80-0xFF)
+			DIGITAL_MESSAGE => 0x90,    # send data for a digital pin
+			ANALOG_MESSAGE  => 0xE0,    # send data for an analog pin (or PWM)
+			REPORT_ANALOG   => 0xC0,    # enable analog input by pin #
+			REPORT_DIGITAL  => 0xD0,    # enable digital input by port pair
+			SET_PIN_MODE    => 0xF4,    # set a pin to INPUT/OUTPUT/PWM/etc
+			REPORT_VERSION  => 0xF9,    # report protocol version
+			SYSTEM_RESET    => 0xFF,    # reset from MIDI
+			START_SYSEX     => 0xF0,    # start a MIDI Sysex message
+			END_SYSEX       => 0xF7,    # end a MIDI Sysex message
+
+			# extended command set using sysex (0-127/0x00-0x7F)
+			RESERVED_COMMAND        => 0x00, # 2nd SysEx data byte is a chip-specific command (AVR, PIC, TI, etc).
+			ANALOG_MAPPING_QUERY    => 0x69, # ask for mapping of analog to pin numbers
+			ANALOG_MAPPING_RESPONSE => 0x6A, # reply with mapping info
+			CAPABILITY_QUERY        => 0x6B, # ask for supported modes and resolution of all pins
+			CAPABILITY_RESPONSE     => 0x6C, # reply with supported modes and resolution
+			PIN_STATE_QUERY         => 0x6D, # ask for a pin's current mode and value
+			PIN_STATE_RESPONSE      => 0x6E, # reply with a pin's current mode and value
+			EXTENDED_ANALOG         => 0x6F, # analog write (PWM, Servo, etc) to any pin
+			SERVO_CONFIG            => 0x70, # set max angle, minPulse, maxPulse, freq
+			STRING_DATA             => 0x71, # a string message with 14-bits per char
+			ONEWIRE_DATA            => 0x73, # OneWire read/write/reset/select/skip/search request + read/search reply
+			SHIFT_DATA              => 0x75, # shiftOut config/data message (34 bits)
+			I2C_REQUEST             => 0x76, # send an I2C read/write request
+			I2C_REPLY               => 0x77, # a reply to an I2C read request
+			I2C_CONFIG              => 0x78, # config I2C settings such as delay times and power pins
+			REPORT_FIRMWARE         => 0x79, # report name and version of the firmware
+			SAMPLING_INTERVAL       => 0x7A, # set the poll rate of the main loop
+			SCHEDULER_DATA          => 0x7B, # createtask/deletetask/addtotask/schedule/querytasks/querytask request and querytasks/querytask reply
+			SYSEX_NON_REALTIME      => 0x7E, # MIDI Reserved for non-realtime messages
+			SYSEX_REALTIME          => 0x7F, # MIDI Reserved for realtime messages
+
+			# pin modes
+			INPUT   => 0x00,           # digital pin in digitalOut mode
+			OUTPUT  => 0x01,           # digital pin in digitalInput mode
+			ANALOG  => 0x02,           # analog pin in analogInput mode
+			PWM     => 0x03,           # digital pin in PWM output mode
+			SERVO   => 0x04,           # digital pin in Servo output mode
+			SHIFT   => 0x05,           # shiftIn/shiftOut mode
+			I2C     => 0x06,           # pin included in I2C setup
+			ONEWIRE => 0x07,
+
+			# Deprecated entries
+			deprecated => [
+				qw( FIRMATA_STRING SYSEX_I2C_REQUEST SYSEX_I2C_REPLY SYSEX_SAMPLING_INTERVAL )
+			],
+
+		},    # /Constants for Version 2.5
 	}
 );
 
diff --git a/fhem/FHEM/lib/Device/Firmata/Protocol.pm b/fhem/FHEM/lib/Device/Firmata/Protocol.pm
index 9f9f1ce2a..d137d1252 100644
--- a/fhem/FHEM/lib/Device/Firmata/Protocol.pm
+++ b/fhem/FHEM/lib/Device/Firmata/Protocol.pm
@@ -744,6 +744,11 @@ sub packet_onewire_request {
 		$subcommand |= $ONE_WIRE_COMMANDS->{READ_REQUEST_BIT};
 		push @data,$args->{read} & 0xFF;
 		push @data,($args->{read}>>8) & 0xFF;
+		if ($self->{protocol_version} ne 'V_2_04') {
+			my $id = (defined $args->{id}) ? $args->{id} : 0;
+			push @data,$id &0xFF;
+			push @data,($id>>8) & 0xFF;
+		}
 	}
 	if (defined $args->{delay}) {
 		$subcommand |= $ONE_WIRE_COMMANDS->{DELAY_REQUEST_BIT};
@@ -774,13 +779,24 @@ sub handle_onewire_reply {
 			  and do {    #PIN,COMMAND,ADDRESS,DATA
 
 				my @data = unpack_from_7bit(@$sysex_data);
-				my $device = shift_onewire_device_from_byte_array(\@data);
+				if ($self->{protocol_version} eq 'V_2_04') {
+					my $device = shift_onewire_device_from_byte_array(\@data);
 
-				return {
-					pin     => $pin,
-					command => 'READ_REPLY',
-					device  => $device,
-					data    => \@data
+					return {
+						pin     => $pin,
+						command => 'READ_REPLY',
+						device  => $device,
+						data    => \@data
+					};
+				} else {
+					my $id = shift @data;
+					$id += (shift @data)<<8;
+					return {
+						pin     => $pin,
+						command => 'READ_REPLY',
+						id      => $id,
+						data    => \@data
+					};
 				};
 			  };