diff --git a/BootLoaders/Boards/avr/boards.txt b/BootLoaders/Boards/avr/boards.txt
index eb4f97a..3beedb6 100644
--- a/BootLoaders/Boards/avr/boards.txt
+++ b/BootLoaders/Boards/avr/boards.txt
@@ -22,6 +22,14 @@ multiatmega328p.build.variant=arduino:eightanaloginputs
 multiatmega328p.build.extra_flags=-Wl,--relax
 multiatmega328p.build.board=MULTI_AVR
 
+multiatmega328p.build.compiler.c.flags=-c -g -Os {compiler.warning_flags} -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects
+multiatmega328p.compiler.c.elf.flags=-Os -g -flto -fuse-linker-plugin -Wl,--gc-sections
+multiatmega328p.compiler.S.flags=-c -g -x assembler-with-cpp -flto -MMD
+
+multiatmega328p.tools.avrdude.config.path={path}/etc/avrdude.conf
+multiatmega328p.tools.avrdude.erase.pattern="{cmd.path}" "-C{config.path}" {erase.verbose} -p{build.mcu} -c{protocol} {program.extra_params} -e -Ulock:w:{bootloader.unlock_bits}:m -Uefuse:w:{bootloader.extended_fuses}:m -Uhfuse:w:{bootloader.high_fuses}:m -Ulfuse:w:{bootloader.low_fuses}:m
+multiatmega328p.tools.avrdude.bootloader.pattern=
+
 multiatmega328p.bootloader.tool=arduino:avrdude
 multiatmega328p.bootloader.low_fuses=0xFF
 multiatmega328p.bootloader.extended_fuses=0xFD
@@ -43,3 +51,31 @@ multiatmega328p.menu.bootloader.optiboot.bootloader.file=Multi4in1/AtmegaMultiBo
 multiatmega328p.menu.bootloader.optiboot.bootloader.high_fuses=0xD6
 
 ##############################################################
+
+##############################################################
+## Multi 4-in-1 (OrangeRX)
+## --------------------------------------------------
+multixmega32d4.name=Multi 4-in-1 (OrangeRX)
+
+multixmega32d4.build.board=MULTI_ORANGERX
+multixmega32d4.build.mcu=atxmega32d4
+multixmega32d4.build.f_cpu=32000000L
+multixmega32d4.build.core=xmega
+multixmega32d4.build.variant=xmega32d4
+
+multixmega32d4.upload.tool=avrdude
+multixmega32d4.upload.protocol=avrispmkii
+multixmega32d4.upload.maximum_size=32768
+multixmega32d4.upload.speed=57600
+
+multixmega32d4.bootloader.tool=arduino:avrdude
+
+multixmega32d4.build.compiler.c.flags=-c -g -Os {compiler.warning_flags} -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto
+multixmega32d4.compiler.c.elf.flags=-Os -flto -Wl,--gc-sections
+multixmega32d4.compiler.S.flags=-c -g -x assembler-with-cpp -flto
+
+multixmega32d4.tools.avrdude.config.path={runtime.platform.path}/avrdude.conf
+multixmega32d4.tools.avrdude.erase.pattern="{cmd.path}" "-C{config.path}" {erase.verbose} -p{build.mcu} -c{protocol} {program.extra_params} -e -Ulock:w:{bootloader.unlock_bits}:m -Ufuse1:w:{bootloader.fuse1}:m -Ufuse2:w:{bootloader.fuse2}:m -Ufuse4:w:{bootloader.fuse4}:m -Ufuse5:w:{bootloader.fuse5}:m
+multixmega32d4.tools.avrdude.bootloader.pattern="{cmd.path}" "-C{config.path}" {bootloader.verbose} -p{build.mcu} -c{protocol} {program.extra_params} "-Uboot:w:{runtime.platform.path}/bootloaders/{bootloader.file}:i" -Ulock:w:{bootloader.lock_bits}:m
+
+##############################################################
diff --git a/BootLoaders/Boards/avr/platform.txt b/BootLoaders/Boards/avr/platform.txt
index 8dd0c1d..d9d7361 100644
--- a/BootLoaders/Boards/avr/platform.txt
+++ b/BootLoaders/Boards/avr/platform.txt
@@ -1,7 +1,125 @@
 #
+# Customized for the Atmega328p and OrangeRX (XMEGA) multi 4-in-1 boards.
+# Both are AVR boards but need different compiler and upload flags and parameters.
 #
 # For more info:
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
 
 name=Multi 4-in-1 AVR
-version=1.0.0
+version=1.0.3
+
+compiler.warning_flags=-w
+compiler.warning_flags.none=-w
+compiler.warning_flags.default=
+compiler.warning_flags.more=-Wall
+compiler.warning_flags.all=-Wall -Wextra
+
+# Default "compiler.path" is correct, change only if you want to override the initial value
+compiler.path={runtime.tools.avr-gcc.path}/bin/
+compiler.c.cmd=avr-gcc
+compiler.c.flags={build.compiler.c.flags}
+compiler.c.elf.flags={compiler.warning_flags} {build.compiler.c.elf.flags}
+compiler.c.elf.cmd=avr-gcc
+compiler.S.flags={build.compiler.S.flags}
+compiler.cpp.cmd=avr-g++
+compiler.cpp.flags=-c -g -Os {compiler.warning_flags} -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -flto
+compiler.ar.cmd=avr-gcc-ar
+compiler.ar.flags=rcs
+compiler.objcopy.cmd=avr-objcopy
+compiler.objcopy.eep.flags=-O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0
+compiler.elf2hex.flags=-O ihex -R .eeprom
+compiler.elf2hex.cmd=avr-objcopy
+compiler.ldflags=
+compiler.size.cmd=avr-size
+
+# This can be overridden in boards.txt
+build.extra_flags=
+
+# These can be overridden in platform.local.txt
+compiler.c.extra_flags=
+compiler.c.elf.extra_flags=
+compiler.S.extra_flags=
+compiler.cpp.extra_flags=
+compiler.ar.extra_flags=
+compiler.objcopy.eep.extra_flags=
+compiler.elf2hex.extra_flags=
+
+# AVR compile patterns
+# --------------------
+
+## Compile c files
+recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.c.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+
+## Compile c++ files
+recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+
+## Compile S files
+recipe.S.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.S.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.S.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+
+## Create archives
+# archive_file_path is needed for backwards compatibility with IDE 1.6.5 or older, IDE 1.6.6 or newer overrides this value
+archive_file_path={build.path}/{archive_file}
+recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}"
+
+## Combine gc-sections, archives, and objects
+recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -mmcu={build.mcu} {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" {object_files} "{build.path}/{archive_file}" "-L{build.path}" -lm
+
+## Create output files (.eep and .hex)
+recipe.objcopy.eep.pattern="{compiler.path}{compiler.objcopy.cmd}" {compiler.objcopy.eep.flags} {compiler.objcopy.eep.extra_flags} "{build.path}/{build.project_name}.elf" "{build.path}/{build.project_name}.eep"
+recipe.objcopy.hex.pattern="{compiler.path}{compiler.elf2hex.cmd}" {compiler.elf2hex.flags} {compiler.elf2hex.extra_flags} "{build.path}/{build.project_name}.elf" "{build.path}/{build.project_name}.hex"
+
+## Save hex
+recipe.output.tmp_file={build.project_name}.hex
+recipe.output.save_file={build.project_name}.{build.variant}.hex
+
+## Compute size
+recipe.size.pattern="{compiler.path}{compiler.size.cmd}" -A "{build.path}/{build.project_name}.elf"
+recipe.size.regex=^(?:\.text|\.data|\.bootloader)\s+([0-9]+).*
+recipe.size.regex.data=^(?:\.data|\.bss|\.noinit)\s+([0-9]+).*
+recipe.size.regex.eeprom=^(?:\.eeprom)\s+([0-9]+).*
+
+## Preprocessor
+preproc.includes.flags=-w -x c++ -M -MG -MP
+recipe.preproc.includes="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} {preproc.includes.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes} "{source_file}"
+
+preproc.macros.flags=-w -x c++ -E -CC
+recipe.preproc.macros="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} {preproc.macros.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{preprocessed_file_path}"
+
+# AVR Uploader/Programmers tools
+# ------------------------------
+
+tools.avrdude.path={runtime.tools.avrdude.path}
+tools.avrdude.cmd.path={path}/bin/avrdude
+tools.avrdude.config.path={tools.avrdude.config.path}
+
+tools.avrdude.upload.params.verbose=-v
+tools.avrdude.upload.params.quiet=-q -q
+# tools.avrdude.upload.verify is needed for backwards compatibility with IDE 1.6.8 or older, IDE 1.6.9 or newer overrides this value
+tools.avrdude.upload.verify=
+tools.avrdude.upload.params.noverify=-V
+tools.avrdude.upload.pattern="{cmd.path}" "-C{config.path}" {upload.verbose} {upload.verify} -p{build.mcu} -c{upload.protocol} "-P{serial.port}" -b{upload.speed} -D "-Uflash:w:{build.path}/{build.project_name}.hex:i"
+
+tools.avrdude.program.params.verbose=-v
+tools.avrdude.program.params.quiet=-q -q
+# tools.avrdude.program.verify is needed for backwards compatibility with IDE 1.6.8 or older, IDE 1.6.9 or newer overrides this value
+tools.avrdude.program.verify=
+tools.avrdude.program.params.noverify=-V
+tools.avrdude.program.pattern="{cmd.path}" "-C{config.path}" {program.verbose} {program.verify} -p{build.mcu} -c{protocol} {program.extra_params} "-Uflash:w:{build.path}/{build.project_name}.hex:i"
+
+tools.avrdude.erase.params.verbose=-v
+tools.avrdude.erase.params.quiet=-q -q
+tools.avrdude.erase.pattern={tools.avrdude.erase.pattern}
+
+tools.avrdude.bootloader.params.verbose=-v
+tools.avrdude.bootloader.params.quiet=-q -q
+tools.avrdude.bootloader.pattern={tools.avrdude.bootloader.pattern}
+
+tools.avrdude_remote.upload.pattern=/usr/bin/run-avrdude /tmp/sketch.hex {upload.verbose} -p{build.mcu}
+
+# USB Default Flags
+# Default blank usb manufacturer will be filled in at compile time
+# - from numeric vendor ID, set to Unknown otherwise
+build.usb_manufacturer="Unknown"
+build.usb_flags=-DUSB_VID={build.vid} -DUSB_PID={build.pid} '-DUSB_MANUFACTURER={build.usb_manufacturer}' '-DUSB_PRODUCT={build.usb_product}'
+
+