[LG Optimus 2x] civato:
I flashed it and this is my conclusion;

Sorry but no, the reason why is because there is just nothing really new in it compared to V30A. The only difference I see is some default tone settings and probably baseband/ril.

But the language support is so small and I don't feel like modding the necessary apk's to include more languages.

The only real difference is V30B is for ESA(Eastern and Southern Africa) region and V30A is EU region , so V30A got a lot more language support. So maybe ril and baseband of V30B is better for you"ll but for that you still need to flash V30B baseband , that is something you cannot do with a simple CWM packages.

Don't expect a V30B rom from me very soon, in my region it is no good.

Remember I'm sharing my personal rom, I don't do request as I don't have the time.Sorry.

Here is build.prop from V30B:

# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=IMM76L
ro.build.display.id=IMM76L.LG-P990-P99030b.1212182355
ro.build.version.incremental=LG-P990-P99030b.1212182355
ro.build.version.sdk=15
ro.build.version.codename=REL
ro.build.version.release=4.0.4
ro.build.date=Dec-18-2012
ro.build.date.utc=1355855288
ro.build.type=user
ro.build.user=prasanth.kumar
ro.build.host=si-rd10-bx-38
ro.build.tags=release-keys
ro.product.model=LG-P990
ro.product.brand=lge
ro.product.name=[COLOR=Red][B]star_open_esa[/B][/COLOR]
ro.product.device=star
ro.product.board=
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=LGE
ro.product.locale.language=en
ro.product.locale.region=GB
ro.wifi.channels=
ro.board.platform=tegra
# ro.build.product is obsolete; use ro.product.device
ro.build.product=star
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=[COLOR=Red][B]star_open_esa[/B][/COLOR]-user 4.0.4 IMM76L LG-P990-P99030b.1212182355 release-keys
ro.build.fingerprint=lge/[COLOR=Red][B]star_open_esa[/B][/COLOR]/star:4.0.4/IMM76L/LG-P990-P99030b.1212182355:user/release-keys
ro.build.characteristics=default
ro.lge.swversion_tool=LG-P990-V30b-Dec-18-2012
ro.lge.swversion=P99030b
# end build properties
ro.opengles.version = 131072
wifi.interface=wlan0
ro.sf.lcd_density=240

# Disable camera early graph connect as we can't prebuild graph due to memory
# constraints in whistler.
nv-camera-disable-early-graph = 1

rild.libpath=/system/lib/lge-ril.so
rild.libargs=-d /dev/ttyspi0

persist.gsm.sms.forcegsm7=1

#MOBII_CHNANGE_S 20120521 yb.lee@mobii.co.kr : DEFAULT_DATA_ROAMING_VALUE
# [LGE_UPDATE_S][DEFAULT_DATA_ROAMING_VALUE],global-wdata@lge.com,2012-04-12
ro.com.android.dataroaming=false
# [LGE_UPDATE_E][DEFAULT_DATA_ROAMING_VALUE],global-wdata@lge.com,2012-04-12
#MOBII_CHNANGE_E 20120521 yb.lee@mobii.co.kr : DEFAULT_DATA_ROAMING_VALUE
# MOBII_S, 20120526, hwlee@mobii.co.kr, LGE headset/BT sound exception scenario.
ro.lge.audio_soundexception=true
# MOBII_E, 20120526, hwlee@mobii.co.kr, LGE headset/BT sound exception scenario.

#MOBII_CHNANGE_S 20120526 shhong@mobii.co.kr : Ringtone Default Value Sett'in
ro.config.ringtone_voipcall=[LG]_06_Bloom.mp3
ro.config.notification_sound=AcousticGuitar.ogg
ro.config.alarm_alert=01_Classmate.mp3
#MOBII_CHNANGE_E 20120526 shhong@mobii.co.kr : Ringtone Default Value Sett'in

#
# ADDITIONAL_BUILD_PROPERTIES
#
keyguard.no_require_sim=true
ro.build.target_operator=OPEN
ro.build.target_country=[COLOR=Red][B]ESA[/B][/COLOR]
ro.build.target_region=[COLOR=Red][B]ESA[/B][/COLOR]
ro.lge.swversion_short=P99030b
ro.lge.swversion_tool_short=V30b
ro.lge.audio_soundexception=true
ro.airplane.phoneapp=1
ro.lge.vt.enable=1
ime_trace_apply=true
ime_handwriting_apply=false
ro.config.ringtone=Anticipation.ogg
ro.config.ringtone_voipcall=[LG]_06_Bloom.mp3
ro.config.notification_sound=AcousticGuitar.ogg
ro.config.alarm_alert=01_Classmate.mp3
ime_vibration_pattern=0:10:20:30
wifi.interface=wlan0
wifi.supplicant_scan_interval=20
ro.build.target_ril_platform=ifx
persist.radio.rr.enable=1
ro.com.google.gmsversion=4.0_r7
ro.setupwizard.mode=DISABLED
ro.livewallpaper.map=DISABLED
ro.com.google.apphider=off
ro.lge.capp_optimusui=true
ro.lge.capp_core=true
ro.lge.capp_drm=true
ro.lge.capp_divx_drm=true
ro.lge.capp_almond=true
ro.lge.capp_resource=true
ro.lge.capp_wapservice=true
ro.lge.capp_osp=true
ro.lge.capp_quickclip_key=true
ro.lge.capp_ghost_finger=true
ro.lge.capp_touch_scroller=true
ro.lge.capp_touch_ldi=true
ro.lge.capp_key_light_off=true
ro.lge.capp_key_exception=true
ro.lge.capp_keyled_timeout=true
ro.lge.capp_valid_batteryid=false
ro.lge.capp_menu_long=true
ro.lge.capp_mdm=true
ro.lge.capp_lockscreen=true
ro.lge.capp_compat=true
ro.lge.capp_bubble_popup=true
drm.service.enabled=true
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=128m
ro.lge.fonts=true
ro.lge.capp_app_preinstall=true
ro.com.google.clientidbase.am=android-lge
ro.com.google.clientidbase.gmm=android-lge
ro.com.google.clientidbase.ms=android-lge
ro.com.google.clientidbase.yt=android-lge
ro.com.google.clientidbase=android-lge
wlan.chip.vendor=brcm
wlan.chip.version=bcm4329
wifi.lge.patch=true
wifi.lge.hanglessid=true
ro.lge.capp_smartcard_uicc=false
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt