Help with AllwinnerA23 Tablet

[It is very important for your help] :o
Hi, I have a Chinese brand tablet and he does not turn the screen on and no picture appears :crying: ... when I connect the tablet on my computer detects as "USB Device (1f3a_pid_efe8)" the phoenix suite also not flash any firmware, some me can help to resolve and find a firmware ... I'll leave the information below...(sorry for my bad english) :cowboy:
Build.prop info:
# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=KVT49L
ro.build.version.incremental=20140916
ro.build.version.sdk=19
ro.build.version.codename=REL
ro.build.version.release=4.4.2
ro.build.date=Tue Sep 16 15:15:07 CST 2014
ro.build.date.utc=1410851707
ro.build.type=eng
ro.build.user=inet_ldw
ro.build.host=inetsuperserver
ro.build.tags=test-keys
ro.product.model=ATABLET917P
ro.product.brand=Inet-Tablet
ro.product.name=polaris_inet
ro.product.device=polaris-inet
ro.product.board=exdroid
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=iNet
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=polaris
# ro.build.product is obsolete; use ro.product.device
ro.build.product=polaris-inet
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=polaris_inet-eng 4.4.2 KVT49L 20140916 test-keys
ro.build.fingerprint=Inet-Tablet/polaris_inet/polaris-inet:4.4.2/KVT49L/20140916:eng/test-keys
ro.build.characteristics=tablet
# end build properties

#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.com.android.dateformat=MM-dd-yyyy
ro.config.ringtone=Ring_Synth_04.ogg
ro.config.notification_sound=pixiedust.ogg
ro.carrier=unknown
ro.config.alarm_alert=Alarm_Classic.ogg
ro.zygote.disable_gl_preload=true
persist.sys.strictmode.visual=0
persist.sys.strictmode.disable=1
ro.opengles.version=131072
ro.kernel.android.checkjni=0
ro.reversion.aw_sdk_tag=exdroid4.4.2_r2-a23-v4.4-2.0
ro.sys.cputype=DualCore-A23
wifi.interface=wlan0
wifi.supplicant_scan_interval=15
keyguard.no_require_sim=true
persist.demo.hdmirotationlock=0
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=128m
dalvik.vm.heaptargetutilization=0.75
dalvik.vm.heapminfree=512k
dalvik.vm.heapmaxfree=2m
persist.sys.usb.config=mass_storage,adb
ro.udisk.lable=MID
ro.font.scale=1.0
ro.hwa.force=true
rw.logger=0
ro.sys.bootfast=false
debug.hwui.render_dirty_regions=false
ro.setupwizard.mode=OPTIONAL
ro.com.google.gmsversion=4.4.2_r1
persist.sys.language=pt
persist.sys.country=PT
ro.sf.lcd_density=120
ro.sf.rotation=270
ro.inet.board.name=D98
ro.inet.model.name=D902C
ro.inet.touchiconfix_x=2.0
ro.inet.touchiconfix_y=2.0
ro.inet.wlan.type=8189es
ro.build.display.id=A23_D98_D902C_1409054.20140916
ro.config.3ginformation.path=/system/etc/3ginfo.gz
persist.sys.timezone=Atlantic/Azores
ro.inet.LauncherTransparent=false
ro.sys.adaptive_memory=1
ro.inet.chip.name=A23
ro.aw.sensordiscard=8
ro.ireader.channel=109938
ro.product.firmware=2.0_20140814
ro.gmt.fota.brand=iNet
persist.sys.dalvik.vm.lib=libdvm.so
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt

# begin GMT FOTA properties
ro.gmt.fota.model=TABARIA9D4JAD
ro.gmt.fota.version=A23_D98_D902C_1409054.20140916
# end GMT FOTA properties