[Android Software/Hacking General [Developers Only]] truth57:
# begin build properties

# autogenerated by buildinfo.sh

ro.build.id=JDQ39

ro.build.display.id=DS1006-eng 4.2.2 JDQ39 eng.ljh.20130506.105106 test-keys

ro.build.version.incremental=eng.ljh.20130426.105106

ro.build.version.sdk=17

ro.build.version.codename=REL

ro.build.version.release=4.2.2

ro.build.date=2013�?04�?26�?星期�?10:51:47 CST

ro.build.date.utc=1366944707

ro.build.type=eng

ro.build.user=ljh

ro.build.host=mid-Porsche

ro.build.tags=test-keys

ro.product.model=M9

ro.product.brand=PIPO

ro.product.name=rk30sdk

ro.product.device=rk30sdk

ro.product.board=rk30sdk

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.manufacturer=rockchip

ro.product.locale.language=en

ro.product.locale.region=GB

ro.wifi.channels=

ro.board.platform=rk30xx

# ro.build.product is obsolete; use ro.product.device

ro.build.product=rk30sdk

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

ro.build.description=rk30sdk-eng 4.2.2 JDQ39 eng.ljh.20130426.105106 test-keys

ro.build.fingerprint=rk30sdk/rk30sdk/rk30sdk:4.2.2/JDQ39/eng.ljh.20130426.105106:eng/test-keys

ro.build.characteristics=tablet

# end build properties

#

# system.prop

#

#rild.libpath=/system/lib/libreference-ril.so

#rild.libargs=-d /dev/ttyUSB2

# Default ecclist

ro.ril.ecclist=112,911

#

# ADDITIONAL_BUILD_PROPERTIES

#

ro.com.android.dateformat=MM-dd-yyyy

ro.rk.systembar.voiceicon=true

ro.config.ringtone=Ring_Synth_04.ogg

ro.config.notification_sound=pixiedust.ogg

ro.carrier=unknown

ro.config.alarm_alert=Alarm_Classic.ogg

dalvik.vm.heapstartsize=8m

dalvik.vm.heapgrowthlimit=64m

dalvik.vm.heapsize=384m

dalvik.vm.heaptargetutilization=0.75

dalvik.vm.heapminfree=512k

dalvik.vm.heapmaxfree=8m

ro.config.facelock=enable_facelock

persist.facelock.detect_cutoff=5000

persist.facelock.recog_cutoff=5000

ro.sf.lcdc_composer=0

keyguard.no_require_sim=true

ro.com.android.dataroaming=true

ril.function.dataonly=0

persist.sys.strictmode.visual=false

dalvik.vm.jniopts=warnonly

ro.rksdk.version=RK30_ANDROID4.2.2-SDK-v1.00.00

sys.hwc.compose_policy=6

sf.power.control=2073600

sys.rkadb.root=0

ro.sf.fakerotation=true

ro.sf.hwrotation=270

ro.rk.MassStorage=false

ro.rk.systembar.voiceicon=false

wifi.interface=wlan0

ro.tether.denied=false

ro.sf.lcd_density=160

ro.rk.screenoff_time=120000

ro.rk.def_brightness=128

ro.rk.homepage_base=http://www.google.com/webhp?client={CID}&source=android-home

ro.rk.install_non_market_apps=true

ro.default.size=100

persist.sys.timezone=Europe/London

ro.product.usbfactory=PIPO

wifi.supplicant_scan_interval=180

ro.opengles.version=131072

ro.factory.tool=0

ro.kernel.android.checkjni=0

ro.rk.bt_enable=true

ro.rk.btchip=mt6622

ro.factory.storage_policy=0

persist.sys.usb.config=mass_storage

testing.mediascanner.skiplist=/mnt/sdcard/Android/

ro.product.version=1.0.0

ro.product.ota.host=www.rockchip.com:2300

dalvik.vm.dexopt-flags=m=y

net.bt.name=Android

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

#

# Hejira Additions

#

# Multi user selection 4.2

fw.max_users=5

Thanks for your quick reply :). Unfortunately my understanding is at a different level to yours, so yes, I would appreciate a more in-depth description of precisely what this entails. Iwill also try and glean more specific info from other sites who specialize in Chinese tablets, although they do not seem to be addressing these sorts of issues - they are more preoccupied with cooking new ROMS and kernels for these devices, which is quite understandable, as these presumably should include build-prop tweaking...

We cannot even OC yet to take advantage of the power of these quad core processors - we are stuck at 1.6mhz :crying: That is why being able to implement your tweaks is so important :fingers-crossed:

Here is what appears in the build.prop file: