here the build.prop
# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=IMM76I
ro.build.display.id=V2.0.0.IMM76I.user.root.201303 26
ro.build.version.incremental=eng.root.20130326.110 316
ro.build.version.sdk=15
ro.build.version.codename=REL
ro.build.version.release=4.0.4
ro.build.date=2013年 03月 26日 星期二 11:04:52 CST
ro.build.date.utc=1364267092
ro.build.type=user
ro.build.user=root
ro.build.host=ljgong
ro.build.tags=release-keys
ro.product.board=TECTM757ND_T
ro.product.cpu.abi=armeabi-v7a
ro.product.model=Next7D12
ro.product.brand=TT-2501
ro.product.name=TT-2501
ro.product.device=TT-2501
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=YIFANG
ro.wifi.channels=14
ro.board.platform=meson6
# ro.build.product is obsolete; use ro.product.device
ro.build.product=TECTM757ND_T
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=TECTM757ND_T-user 4.0.4 IMM76I eng.root.20130326.110316 release-keys
ro.build.fingerprint=MID/TECTM757ND_T/TECTM757ND_T:4.0.4/IMM76I/eng.root.20130326.110316:user/release-keys
ro.build.characteristics=tablet
# end build properties
# system.prop for M1 reference board
# This overrides settings in the products/generic/system.prop file
#
#rild.libpath=/system/lib/libreference-ril.so
#rild.libargs=-d /dev/ttyS0
ro.sf.lcd_density=160
keyguard.no_require_sim=1
#set keyguard.enable=false to disable keyguard
keyguard.enable=true
ro.statusbar.widget=true
ro.statusbar.button=true
ro.statusbar.yearmonthdayweek=true
#wifi.interface=ra0
# Time between scans in seconds. Keep it high to minimize battery drain.
# This only affects the case in which there are remembered access points,
# but none are in range.
#wifi.supplicant_scan_interval = 60
#alsa.mixer.playback.master=DAC2 Analog
#alsa.mixer.capture.master=Analog
#configure the Dalvik heap for a standard tablet device.
#frameworks/base/build/tablet-dalvik-heap.mk
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=256m
hwui.render_dirty_regions=false
# Disable un-supported Android feature
hw.nopm=false
hw.nobattery=false
hw.nophone=false
hw.istablet=true
hw.novibrate=true
hw.has.accessibility.accel=false
hw.cameras=1
hw.hasethernet=false
#hw.hasdata=true
ro.platform.has.touch=true
# Wi-Fi sleep policy
ro.platform.has.sleeppolicy=false
#set to 0 temporarily so touch works without other changes
ro.sf.hwrotation=270
#0~7 You are required to get the correct install direction according the sensor placement on target board
ro.sf.gsensorposition=1
ro.sf.ecompassposition=4
allow_all_orientations=1
# Set Camera Orientation
# Use OSD2 mouse patch
ro.ui.cursor=osd2
ro.hardware=amlogic
# Enable 32-bit OSD
sys.fb.bits=32
# Disable GPS
gps.enable=false
# Enable player buildin
media.amsuperplayer.enable=true
media.amplayer.enable-acodecs=asf,aac,m4a,ape,flac,alac,wav
media.amplayer.enable=true
media.amsuperplayer.m4aplayer=STAGEFRIGHT_PLAYER
media.amsuperplayer.defplayer=PV_PLAYER
media.amplayer.thumbnail=true
# Nand write need force sync when gadget
gadget.nand.force_sync=true
# Status bar customization
ro.statusbar.widget.power=true
ro.statusbar.yearmonthdayweek=true
# HDMI
ro.hdmi480p.enable=false
rw.fb.need2xscale=ok
media.amplayer.osd2xenable=true
#camera DCIM dir. 0:sd only; 1:nand only; 2,sd first
ro.camera.dcim=1
# Disable preload-class
ro.amlogic.no.preloadclass=1
# App optimization
ro.app.optimization=true
# CPU settings
ro.has.cpu.setting=false
# For 800 x 480
ro.platform.UI.800x480=false
#ro.platform.has.mbxuimode=true
#support media poll uevent,can use sd cardread on usb port
has.media.poll=false
# gsensor board
ro.7inch.gsensor=1
ro.8inch.gsensor=0
#For Erase internal SD card
hw.erase.internalSdcard=true
# CPU freq customized in setting menu
# normal, performance, powersaving
ro.cpumode.maxfreq=1200000,1512000,800000
# when usbstorage, CPU mode and freq
ro.usbstorage.cpumode=performance
ro.usbstorage.maxfreq=600000
#audio effect
ro.audioEffectEnabled=true
#Dual display
ro.vout.dualdisplay2=true
ro.vout.player.exit=false
#Encrypt tablet
#ro.platform.has.security=false
#hdmi settings
ro.hdmi.has.settings=false
#used forward seek for libplayer
media.libplayer.seek.fwdsearch=1
#enable address bar cover issue fixing
ro.flashplayer.surfacehack=1
#used to set default surface size, set 1 when hwrotation is 270;
#enable widevine
media.amplayer.widevineenable=true
media.amplayer.stopbuflevel=0.002
#YF prop
ro.yifang.devicename=TT-2501
ro.yifang.hotpoint=0
ro.keyguard.orientation=landscape
ro.yifang.bluetooth=1
virtualsd.enable=true
ro.yifang.weather.city=New@York
ro.yifang.weather.isf=0
ro.yifang.unknown.sources=1
ro.yifang.default.timeout=600000
#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.opengles.version=131072
ro.config.notification_sound=OnTheHunt.ogg
ro.config.alarm_alert=Alarm_Classic.ogg
drm.service.enabled=true
ro.setupwizard.mode=DISABLED
ro.com.google.gmsversion=4.0_r4
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt
ro.hardware.version=1.0.0.0
ro.vendor.name=YFMID
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