[Android Software/Hacking General [Developers Only]] :
I checked my build.prop manually and it shows the values...for some reason the getprop command isn't displaying the build.prop correctly.

Here is my build.prop copied directly from the file.

# begin build properties

# autogenerated by buildinfo.sh

# ROM Manager OTA info

ro.rommanager.developerid=miuius

ro.modversion=MIUIUS-1.8.12.0-EN-SUPERSONIC

ro.build.id=MIUI

ro.build.display.id=1.8.12.0

ro.build.version.incremental=108120

ro.build.version.sdk=10

ro.build.version.codename=REL

ro.build.version.release=2.3.5

ro.build.date=Fri Jul 15 3:58:22 PST 2011

ro.build.date.utc=1293169253

ro.build.type=userdebug

ro.build.user=stiffspliff

ro.build.host=builder

ro.build.tags=test-keys

ro.product.model=PC36100

ro.product.brand=sprint

ro.product.name=htc_supersonic

ro.product.device=supersonic

ro.product.board=supersonic

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.manufacturer=HTC

ro.product.locale.language=en

ro.product.locale.region=US

ro.wifi.channels=

ro.board.platform=qsd8k

# ro.build.product is obsolete; use ro.product.device

ro.build.product=supersonic

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

ro.build.description=3.29.651.5 CL252548 release-keys

ro.build.fingerprint=ssprint/htc_supersonic/supersonic:2.3.3/GRI40/61076:user/release-keys

# end build properties

#

# system.prop for device

#

rild.libpath=/system/lib/libhtc_ril.so

ro.ril.def.preferred.network = 4

ro.telephony.default_network = 4

wifi.interface = eth0

wifi.supplicant_scan_interval=15

ro.com.google.locationfeatures = 1

# density in DPI of the LCD of this board. This is used to scale the UI

# appropriately. If this property is not defined, the default value is 160 dpi.

ro.sf.lcd_density=210

# ro.sf.lcd_density = 160

# For SD storage insert notification sound

persist.service.mount.playsnd = 0

# For the agps default value

ro.ril.def.agps.mode = 2

# For auto backlight default value

settings.display.autobacklight=1

# default value of brightness

settings.display.brightness=143

# For emmc phone storage

ro.phone_storage = 1

# This is a high density device with more memory, so larger vm heaps for it.

dalvik.vm.heapsize=64m

gsm.sim.operator.numeric = 0

gsm.sim.operator.alpha = 0

gsm.sim.operator.iso-country = 0

#Modify MTU from 1500 to 1472 on 3G network

ro.ril.set.mtu1472 = 1

mobiledata.interfaces=rmnet0,eth0,gprs,ppp0,wimax0

# ADDITIONAL_BUILD_PROPERTIES

#

ro.com.google.clientidbase=android-sprint-us

ro.com.google.locationfeatures=1

ro.cdma.home.operator.numeric=310120

ro.cdma.home.operator.alpha=Sprint

ro.setupwizard.enable_bypass=1

ro.media.dec.jpeg.memcap=20000000

dalvik.vm.lockprof.threshold=500

dalvik.vm.dexopt-flags=m=y

ro.opengles.version=131072

media.a1026.nsForVoiceRec=0

media.a1026.enableA1026=1

keyguard.no_require_sim=true

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

ro.com.android.dataroaming=false

ro.rommanager.developerid=miuius

ro.url.legal=http://www.google.com/intl/%s/mobile/android/basic/phone-legal.html

ro.url.legal.android_privacy=http://www.google.com/intl/%s/mobile/android/basic/privacy.html

ro.com.google.clientidbase=android-google

ro.com.android.wifi-watchlist=GoogleGuest

ro.setupwizard.enterprise_mode=1

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

ro.com.android.dataroaming=false

ro.setupwizard.mode=DISABLED

dalvik.vm.dexopt-flags=m=y

net.bt.name=Android

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

ro.ril.hsxpa=3

ro.ril.gprsclass=12

ro.ril.hep=1

ro.ril.enable.dtm=1

ro.ril.hsdpa.category=28

ro.ril.enable.a53=1

ro.ril.enable.a52=0

ro.ril.enable.3g.prefix=1

ro.ril.htcmaskw1.bitmask=4294967295

ro.ril.htcmaskw1=14449

ro.ril.hsupa.category=9

ro.ril.def.agps.mode=2

ro.ril.def.agps.feature=1

ro.ril.enable.sdr=1

ro.ril.enable.gea3=1

ro.ril.enable.fd.plmn.prefix=23402,23410,23411

ro.ril.disable.power.collapse=0