[General Questions and Answers] k00lk0der1:
I own a Karbonn TA-Fone A37 which has MT6577 with 512 MB ram.

Last night I rooted my phone with help of Vroot and changed to SuperSu.

I edited the build.prop

The original being

# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=JZO54K
ro.build.display.id=ALPS.JB.MP.V1.16
ro.build.version.incremental=eng.chenqi.1361855447
ro.custom.build.version=1361855447
ro.build.version.sdk=16
ro.build.version.codename=REL
ro.build.version.release=4.1.2
ro.build.date=2013年 02月 26日 星期二 13:11:43 CST
ro.build.date.utc=1361855503
ro.build.type=user
ro.build.user=chenqi
ro.build.host=lentek-rd
ro.build.tags=test-keys
ro.product.model=TA-FONE A37
ro.product.brand=alps
ro.product.name=hexing77_jb
ro.product.device=hexing77_jb
ro.product.board=hexing77_jb
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=alps
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# ro.build.product is obsolete; use ro.product.device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=hexing77_jb
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=hexing77_jb-user 4.1.2 JZO54K eng.chenqi.1361855447 test-keys
ro.build.fingerprint=alps/hexing77_jb/hexing77_jb:4.1.2/JZO54K/1361855447:user/test-keys
ro.build.flavor=
ro.build.characteristics=default
# end build properties

# begin mediatek build properties
ro.mediatek.version.release=ALPS.JB.MP.V1.16
ro.mediatek.platform=MT6577
ro.mediatek.chip_ver=S01
ro.mediatek.version.branch=ALPS.JB.MP
# 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}

# MTK, TeChien {
ro.media.enc.hprof.file.format=3gp
ro.media.enc.hprof.codec.vid=m4v
ro.media.enc.hprof.vid.width=720
ro.media.enc.hprof.vid.height=480
ro.media.enc.hprof.vid.fps=30
ro.media.enc.hprof.vid.bps=3400000
ro.media.enc.hprof.codec.aud=amrnb
ro.media.enc.hprof.aud.bps=12200
ro.media.enc.hprof.aud.ch=1
ro.media.enc.hprof.aud.hz=8000

ro.media.enc.mprof.file.format=3gp
ro.media.enc.mprof.codec.vid=m4v
ro.media.enc.mprof.vid.width=352
ro.media.enc.mprof.vid.height=288
ro.media.enc.mprof.vid.fps=30
ro.media.enc.mprof.vid.bps=990000
ro.media.enc.mprof.codec.aud=amrnb
ro.media.enc.mprof.aud.bps=12200
ro.media.enc.mprof.aud.ch=1
ro.media.enc.mprof.aud.hz=8000

ro.media.enc.lprof.file.format=3gp
ro.media.enc.lprof.codec.vid=h263
ro.media.enc.lprof.vid.width=176
ro.media.enc.lprof.vid.height=144
ro.media.enc.lprof.vid.fps=30
ro.media.enc.lprof.vid.bps=384000
ro.media.enc.lprof.codec.aud=amrnb
ro.media.enc.lprof.aud.bps=12200
ro.media.enc.lprof.aud.ch=1
ro.media.enc.lprof.aud.hz=8000
# MTK, TeChien }

#
wifi.tethering.interface=ap0
#

ro.opengles.version=131072

wifi.direct.interface=p2p0
dalvik.vm.heapgrowthlimit=64m
dalvik.vm.heapsize=128m

# Encrypt phone function
ro.crypto.tmpfs_options=mode=0771,uid=1000,gid=1000
ro.crypto.fs_type=ext4
ro.crypto.fs_real_blkdev=/emmc@usrdata
ro.crypto.fs_mnt_point=/data
ro.crypto.fs_options=noauto_da_alloc
ro.crypto.fs_flags=0x00000406

# 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

# default timezone
persist.sys.defaulttimezone=Asia/Bangkok
ro.operator.optr=CUST

#
# ADDITIONAL_BUILD_PROPERTIES
#
ril.specific.sm_cause=0
gps.solution.combo.chip=1
fmradio.driver.chip=1
ro.sf.hwrotation=270
ril.current.share_modem=2
launcherplus.allappsgrid=2d
launcher2.allappsgrid=3d_20
curlockscreen=2
ro.mediatek.gemini_support=true
persist.radio.fd.counter=20
persist.radio.fd.off.counter=20
drm.service.enabled=true
fmradio.driver.enable=1
dalvik.vm.mtk-stack-trace-file=/data/anr/mtk_traces.txt
mediatek.wlan.chip=MT6620
mediatek.wlan.module.postfix=_mt6620
ro.config.notification_sound=Proxima.ogg
ro.config.alarm_alert=Alarm_Classic.ogg
ro.config.ringtone=Backroad.ogg
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt

To the new one

# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=JZO54K
ro.build.display.id=ALPS.JB.MP.V1.16
ro.build.version.incremental=eng.chenqi.1361855447
ro.custom.build.version=1361855447
ro.build.version.sdk=16
ro.build.version.codename=REL
ro.build.version.release=4.4
ro.build.date=2013年 02月 26日 星期二 13:11:43 CST
ro.build.date.utc=1361855503
ro.build.type=user
ro.build.user=chenqi
ro.build.host=lentek-rd
ro.build.tags=test-keys
ro.product.model=TA-FONE A37
ro.product.brand=alps
ro.product.name=hexing77_jb
ro.product.device=hexing77_jb
ro.product.board=hexing77_jb
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=alps
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=hexing77_jb
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=hexing77_jb-user 4.1.2 JZO54K eng.chenqi.1361855447 test-keys
ro.build.fingerprint=alps/hexing77_jb/hexing77_jb:4.1.2/JZO54K/1361855447:user/test-keys
ro.build.flavor=
ro.build.characteristics=default
# end build properties

# begin mediatek build properties
ro.mediatek.version.release=ALPS.JB.MP.V1.16
ro.mediatek.platform=MT6577
ro.mediatek.chip_ver=S01
ro.mediatek.version.branch=ALPS.JB.MP
# 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}

# MTK, TeChien {
ro.media.enc.hprof.file.format=3gp
ro.media.enc.hprof.codec.vid=m4v
ro.media.enc.hprof.vid.width=720
ro.media.enc.hprof.vid.height=480
ro.media.enc.hprof.vid.fps=30
ro.media.enc.hprof.vid.bps=3400000
ro.media.enc.hprof.codec.aud=amrnb
ro.media.enc.hprof.aud.bps=12200
ro.media.enc.hprof.aud.ch=1
ro.media.enc.hprof.aud.hz=8000

ro.media.enc.mprof.file.format=3gp
ro.media.enc.mprof.codec.vid=m4v
ro.media.enc.mprof.vid.width=352
ro.media.enc.mprof.vid.height=288
ro.media.enc.mprof.vid.fps=30
ro.media.enc.mprof.vid.bps=990000
ro.media.enc.mprof.codec.aud=amrnb
ro.media.enc.mprof.aud.bps=12200
ro.media.enc.mprof.aud.ch=1
ro.media.enc.mprof.aud.hz=8000

ro.media.enc.lprof.file.format=3gp
ro.media.enc.lprof.codec.vid=h263
ro.media.enc.lprof.vid.width=176
ro.media.enc.lprof.vid.height=144
ro.media.enc.lprof.vid.fps=30
ro.media.enc.lprof.vid.bps=384000
ro.media.enc.lprof.codec.aud=amrnb
ro.media.enc.lprof.aud.bps=12200
ro.media.enc.lprof.aud.ch=1
ro.media.enc.lprof.aud.hz=8000
# MTK, TeChien }

#
wifi.tethering.interface=ap0
#

ro.opengles.version=131072

wifi.direct.interface=p2p0
dalvik.vm.heapgrowthlimit=64m
dalvik.vm.heapsize=128m

# Encrypt phone function
ro.crypto.tmpfs_options=mode=0771,uid=1000,gid=1000
ro.crypto.fs_type=ext4
ro.crypto.fs_real_blkdev=/emmc@usrdata
ro.crypto.fs_mnt_point=/data
ro.crypto.fs_options=noauto_da_alloc
ro.crypto.fs_flags=0x00000406

# 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

# default timezone
persist.sys.defaulttimezone=Asia/Bangkok
ro.operator.optr=CUST

#
# ADDITIONAL_BUILD_PROPERTIES
#
ril.specific.sm_cause=0
gps.solution.combo.chip=1
fmradio.driver.chip=1
ro.sf.hwrotation=270
ril.current.share_modem=2
launcherplus.allappsgrid=2d
launcher2.allappsgrid=3d_20
curlockscreen=2
ro.mediatek.gemini_support=true
persist.radio.fd.counter=20
persist.radio.fd.off.counter=20
drm.service.enabled=true
fmradio.driver.enable=1
dalvik.vm.mtk-stack-trace-file=/data/anr/mtk_traces.txt
mediatek.wlan.chip=MT6620
mediatek.wlan.module.postfix=_mt6620
ro.config.notification_sound=Proxima.ogg
ro.config.alarm_alert=Alarm_Classic.ogg
ro.config.ringtone=Backroad.ogg
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt

I did this with help of ES File Explorer

Now I am stuck with an inverted bootanimation. I am able to pull files with adb but cant push the original build.prop. I tried running adb root ant then adb shell but adb shell hangs up after the adb root command

I have pulled the /system/ partition and am thinking of making system.img and flashing it with fastboot

please help and thanks in advance