I want to get nav. bar on my custom rom the device is xolo a500s

i want to get navigation bars (soft keys) but it does not working manually or by any app here is build.prop

begin build properties

autogenerated by buildinfo.sh

ro.build.id=JDQ39 ro.build.display.id=Dark PureLolli By ACRD ro.build.version.incremental=eng.root.1376978569 ro.custom.build.version=Dark Purelolli by ACRD TeaM ro.build.version.sdk=17 ro.build.version.codename=REL ro.build.version.release=5.0 ro.build.date=Sat Feb 22 22:51:08 WIB 2014 ro.build.date.utc=1376978866 ro.build.type=user ro.build.user=root ro.build.host=software ro.build.tags=release-keys ro.product.model=Y511 ro.product.brand=HUAWEI ro.product.name=Y511 ro.product.device=HUAWEI ro.product.board=Y511 ro.product.cpu.abi=armeabi-v7a ro.product.cpu.abi2=armeabi ro.product.manufacturer=Nexus ro.product.locale.language=es ro.product.locale.region=ES ro.wifi.channels= ro.board.platform=

ro.build.product is obsolete; use ro.product.device

ro.build.product=Nexus

Do not try to parse ro.build.description or .fingerprint

ro.build.description=a101-user 4.4.2 JDQ39 eng.yiqinpan2.1384491559 test-keys ro.build.fingerprint=alps/a101/a101:4.4.2/JDQ39/1384491559:user/test-keys ro.build.flavor= ro.build.characteristics=default

end build properties

begin mediatek build properties

ro.mediatek.version.release=ALPS.JB3.MP.V1.2 ro.mediatek.platform=MT6572 ro.mediatek.chip_ver=S01 ro.mediatek.version.branch=ALPS.JB3.MP ro.mediatek.version.sdk=1

end mediatek build properties

#

system.prop for generic sdk

#

rild.libpath=/system/lib/mtk-ril.so rild.libargs=-d /dev/ttyC0

MTK, Infinity, 20090720 {

wifi.interface=wlan0

MTK, Infinity, 20090720 }

MTK, mtk03034, 20101210 {

ro.mediatek.wlan.wsc=1

MTK, mtk03034 20101210}

MTK, mtk03034, 20110318 {

ro.mediatek.wlan.p2p=1

MTK, mtk03034 20110318}

MTK, mtk03034, 20101213 {

mediatek.wlan.ctia=0

MTK, mtk03034 20101213}

# wifi.tethering.interface=ap0 #

ro.opengles.version=131072

wifi.direct.interface=p2p0 dalvik.vm.heapgrowthlimit=128m dalvik.vm.heapsize=256m

USB MTP WHQL

ro.sys.usb.mtp.whql.enable=0

Power off opt in IPO

sys.ipo.pwrdncap=2

ro.sys.usb.storage.type=mtp,mass_storage

USB BICR function

ro.sys.usb.bicr=yes

USB Charge only function

ro.sys.usb.charging.only=yes

audio

ro.camera.sound.forced=0 ro.audio.silent=0

ro.zygote.preload.enable=0

temporary enables NAV bar (soft keys)

amoi:disable NAV bar

qemu.hw.mainkeys=1

ro.kernel.zio=38,108,105,16

TimeZone China ,chenxc,2012-05-22

persist.sys.timezone=Europe/Moscow

Boot,Shutdown ring on/off, luohw, 2013-01-21

persist.sys.ring_on_or_off=1

#

ADDITIONAL_BUILD_PROPERTIES

# persist.gemini.sim_num=2 ro.gemini.smart_sim_switch=false ro.gemini.smart_3g_switch=1 ril.specific.sm_cause=0 bgw.current3gband=0 ril.external.md=0 ro.sf.hwrotation=0 ril.current.share_modem=2 curlockscreen=1 ro.mediatek.gemini_support=true ro.operator.optr=OP02 ro.operator.spec=SPEC0200 ro.operator.seg=SEGA persist.radio.fd.counter=15 persist.radio.fd.off.counter=5 persist.radio.fd.r8.counter=15 persist.radio.fd.off.r8.counter=5 persist.mtk.wcn.combo.chipid=-1 drm.service.enabled=true fmradio.driver.enable=1 ril.first.md=1 ril.flightmode.poweroffMD=1 ril.telephony.mode=3 dalvik.vm.mtk-stack-trace-file=/data/anr/mtk_traces.txt mediatek.wlan.chip=mediatek.wlan.module.postfix=_ ril.radiooff.poweroffMD=0 ro.config.ringtone=Themos.ogg ro.config.notification_sound=Tejat.ogg ro.config.alarm_alert=Oxygen.ogg ro.setupwizard.mode=ENABLED net.bt.name=Android dalvik.vm.stack-trace-file=/data/anr/traces.txt

Init.d for boot.img

sys.initd=1 sys.initd.loop=1

Quality pictures 100%

ro.media.enc.jpeg.quality=100 camera/camcorder mods ro.media.capture.maxres=8m ro.media.capture.fast.fps=4 ro.media.capture.slow.fps=120 ro.media.capture.flash=led ro.media.capture.flashMinV=3300000 ro.media.capture.torchIntensity=40 ro.media.capture.flashIntensity=70 ro.media.panorama.defres=3264x1840 ro.media.panorama.frameres=1280x720 ro.camcorder.videoModes=true ro.HOME_APP_ADJ=1 debug.sf.hw=1 ro.media.dec.jpeg.memcap=8000000 ro.media.enc.hprof.vid.bps=8000000 ro.ril.hsxpa=2

ro.ril.gprsclass=10 ro.ril.hep=1 ro.ril.enable.dtm=0 ro.ril.hsdpa.category=8 (or 10,12,14) Still looking for more of these though. ro.ril.enable.a53=1 ro.ril.enable.3g.prefix=1 ro.ril.htcmaskw1.bitmask=4294967295 ro.ril.htcmaskw1=14449 ro.ril.hsupa.category=6

net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960 net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960 net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960 net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960 net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960

More free ram and apps load faster

dalvik.vm.dexopt-flags=m=y

Responsiveness scroll

windowsmgr.max_events_per_sec=150

Improving the quality of the microphone

ro.ril.enable.amr.wideband=1 ro.sf.lcd_density=200

tweaks

ro.lolly.rom.name=Lolly Rom ro.lolly.rom.version=v1.00

Mejora el rendimiento de la bateria

ro.ril.disable.power.collapse=1 pm.sleep_mode=1 wifi.supplicant_scan_interval=180

Mejora Bateria

echo "500" > /proc/sys/vm/dirty_expire_centisecs echo "1000" > /proc/sys/vm/dirty_writeback_centisecs

please help..