[General Questions and Answers] n2roy:
I thought It is original, that is why I decided to update with CM. but after unsuccessful update I got bootloop and then I realized that it is a clone and MTK 6572 cpu.

before update I did backup build.prop . now I need a rom. please help. here is the build.prop.==>

# begin build properties

# autogenerated by buildinfo.sh

ro.build.id=JDQ39

ro.build.display.id=ALPS.JB3.MP.V1

ro.build.version.incremental=eng.sw07.1402284291

ro.custom.build.version=v.s.140609

ro.build.version.sdk=17

ro.build.version.codename=REL

ro.build.version.release=4.2.2

ro.build.versioninfo=e103_lca-fg-s-common-common

ro.build.date=2014年 06月 09日 星期一 11:26:02 CST

ro.build.date.utc=1402284362

ro.build.type=user

ro.build.user=sw07

ro.build.host=server5

ro.build.tags=test-keys

ro.product.board=e103_lca

ro.product.model=GT-I9190

ro.product.brand=samsung

ro.product.name=serrano3g

ro.product.device=serrano3g

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.manufacturer=samsung

ro.product.locale.language=en

ro.product.locale.region=US

ro.wifi.channels=

ro.board.platform=

# ro.build.product is obsolete; use ro.product.device

ro.build.product=e103_lca

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

ro.build.description=e103_lca-user 4.2.2 JDQ39 eng.sw07.1402284291 test-keys

ro.build.fingerprint=alps/e103_lca/e103_lca:4.2.2/JDQ39/1402284291:user/test-keys

ro.build.flavor=

ro.build.characteristics=default

ro.product.android.ver=4.3

ro.product.base.ver=I9190XXUAMF7

ro.product.kernel.ver=3.4.0-933422 se.infra@SEP-129 #1 Fri Jun 21 13:30:42 KST 2013

ro.product.inner.ver=JDQ39.I9190XXUAMF7

ro.product.model.setting=GT-I9190

# end build properties

# begin mediatek build properties

ro.mediatek.version.release=ALPS.JB3.MP.V1

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=96m

dalvik.vm.heapsize=128m

# 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)

#qemu.hw.mainkeys=0

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

#

# ADDITIONAL_BUILD_PROPERTIES

#

persist.gemini.sim_num=1

ro.gemini.smart_sim_switch=false

ro.gemini.smart_3g_switch=0

ril.specific.sm_cause=0

ril.external.md=0

ro.sf.hwrotation=180

ril.current.share_modem=1

curlockscreen=1

ro.mediatek.gemini_support=false

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.notification_sound=OnTheHunt.ogg

ro.config.alarm_alert=Alarm_Classic.ogg

ro.config.ringtone=CaribbeanIce.ogg

net.bt.name=Android

dalvik.vm.stack-trace-file=/data/anr/traces.txt