[LG Optimus 2x] soundsk:
Hi,

Would like to get my original ROM to restore if necessary sometime. The question is, i don't know which one it is.

My phone is Portugal TMN. Here is the info i gathered from "About Phone" and "/system/build.prop":

about phone:

Android version: 2.2.2

LGE version: LGP990-V10b

Kernel: 2.6.32.9-dirty

Baseband: 1035.21_20110218

Build Number: FRG83G

build.prop:

# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=FRG83G
ro.build.display.id=FRG83G
ro.build.version.incremental=2ED2ADCFFC
ro.build.version.sdk=8
ro.build.version.codename=REL
ro.build.version.release=2.2.2
ro.build.date=Thu Mar 10 20:01:23 IST 2011
ro.build.date.utc=1299767483
ro.build.type=user
ro.build.user=yogish.s
ro.build.host=si-rd10-bld123
ro.build.tags=release-keys
ro.product.model=LG-P990
ro.product.brand=lge
ro.product.name=lge_star
ro.product.device=p990
ro.product.board=p990
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# ro.build.product is obsolete; use ro.product.device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=p990
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=star-user 2.2.2 FRG83G 2ED2ADCFFC release-keys
ro.build.fingerprint=lge/lge_star/p990/p990:2.2.2/FRG83G/lgp990-V10b.2ED2ADCFFC:user/release-keys
# end build properties
rild.libargs=-d /dev/chnlat10
# 20100720, hyeseung.ryu@lge.com, Add haptic feedback of touch key
# Touch Key: SEARCH, BACK, HOME, MENU
ro.lge.touchkey=BACK|SEARCH|HOME|MENU

ro.build.lge.version.release=LGP990-V10b
ro.build.lge.version.hidden=0
ro.opengles.version=131072
keyguard.no_require_sim=true
persist.service.pcsync.enable=0
persist.service.lgospd.enable=0

dalvik.vm.heapsize=32m

#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.config.notification_sound=Acoustic_Guitar.ogg
ro.config.alarm_alert=Alarm_Beep01.ogg
ro.config.ringtone=Anticipation.ogg
media.stagefright.enable-player=true
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true
ro.setupwizard.mode=DISABLED
ro.com.google.gmsversion=2.2_r9
ro.com.google.clientidbase=android-lge
ro.com.google.clientidbase.ms=android-lge
ro.com.google.clientidbase.gmm=android-lge
ro.com.google.clientidbase.yt=android-lge
ro.com.google.clientidbase.am=android-lge
ro.com.google.clientidbase.vs=android-lge
ro.media.dec.vid.wmv.enabled=1
ro.media.dec.aud.wma.enabled=1
ro.media.enc.hprof.file.format=3gp
ro.media.enc.hprof.aud.hz=44100
ro.media.enc.hprof.aud.ch=2
ro.media.enc.hprof.codec.aud=aac
ro.media.enc.hprof.aud.bps=128000
ro.media.enc.hprof.vid.bps=4000000
ro.media.enc.hprof.vid.width=1280
ro.media.enc.hprof.vid.height=720
ro.media.enc.hprof.codec.vid=h264
ro.media.enc.hprof.vid.fps=30
ro.sf.lcd_density=240
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt

Is there anyway that from that i can find out what firmware i should download?

Or perhaps there is a way to make a backup of mine, deeper or more complete than with CMW?

I would like to backup my original one because unlike many people here i must have been lucky, my phone works quite well with stock fw v10b. LG Update shows v10D available but i'm afraid to upgrade and make the phone worse. that's the same reason i haven't tried any roms yet. If i have a sure fire way to get it completely stock with the same exact rom it has now then i could start tinkering a bit knowing i have somewhere to return to in case things don't go well...

Thanks for any help, cheers!