[Sony Xperia S, Acro S, Ion] Desperanto86:
all work fine for me without any wipes.

---------- Post added at 03:12 PM ---------- Previous post was at 03:10 PM ----------

by the way. I've edited build.prop a bit. 3G connection now more stable :) and some tweaks included.

##### Merging of the /util/data/semc_kernel_time_stamp.prop file #####
ro.build.date=Fri Oct 5 01:14:38 2012
ro.build.date.utc=1349367278
ro.build.user=BuildUser
ro.build.host=BuildHost

##### Final patch of properties #####
ro.build.product=LT26w
ro.build.description=LT26w-user 4.0.4 6.1.A.2.55 yPd_zw test-keys

ro.product.brand=SEMC
ro.product.name=LT26w_1266-3278
ro.product.device=LT26w
ro.build.tags=release-keys
ro.build.fingerprint=SEMC/LT26w_1266-3278/LT26w:4.0.4/6.1.A.2.55/yPd_zw:user/release-keys

######################## Customized property values #########################

ro.semc.version.cust=1266-3278
ro.semc.version.cust_revision=R4G

persist.ro.ril.sms_sync_sending=1

#########################################################################

ro.config.ringtone=xperia.ogg
ro.config.notification_sound=notification.ogg
ro.config.alarm_alert=alarm.ogg
ro.semc.content.number=PA4

################# Updating of the SW Version #################
ro.semc.version.fs_revision=6.1.A.2.55
ro.build.id=6.1.A.2.55
ro.build.display.id=XTXperience_8

##### Values from product package metadata #####
ro.semc.product.model=LT26w
ro.semc.ms_type_id=PM-0210-BV
ro.semc.version.fs=WORLD
ro.semc.product.name=Xperia acro S
ro.semc.product.device=LT26w
ro.product.model=LT26w

# begin build properties
# autogenerated by buildinfo.sh
ro.build.version.incremental=yPd_zw
ro.build.version.sdk=15
ro.build.version.codename=REL
ro.build.version.release=4.0.4
ro.build.type=user
ro.product.board=MSM8660_SURF
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=Sony Ericsson
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=msm8660
# ro.build.product is obsolete; use ro.product.device
# Do not try to parse ro.build.description or .fingerprint
ro.build.characteristics=nosdcard
# end build properties
#
# system.prop for surf
#

# Notify the system that the RIL only signals once
ro.telephony.call_ring.multiple=false

rild.libpath=/system/lib/libril-qc-qmi-1.so
rild.libargs=-d /dev/smd0
persist.rild.nitz_plmn=
persist.rild.nitz_long_ons_0=
persist.rild.nitz_long_ons_1=
persist.rild.nitz_long_ons_2=
persist.rild.nitz_long_ons_3=
persist.rild.nitz_short_ons_0=
persist.rild.nitz_short_ons_1=
persist.rild.nitz_short_ons_2=
persist.rild.nitz_short_ons_3=
DEVICE_PROVISIONED=1
debug.sf.hw=1
debug.composition.type=dyn
ro.sf.compbypass.enable=1

wifi.interface=wlan0
wifi.supplicant_scan_interval=180

#
# system props for the cne module
#
persist.cne.UseCne=false
persist.cne.bat.range.low.med=30
persist.cne.bat.range.med.high=60
persist.cne.loc.policy.op=/system/etc/OperatorPolicy.xml
persist.cne.loc.policy.user=/system/etc/UserPolicy.xml
persist.cne.bwbased.rat.sel=false
persist.cne.snsr.based.rat.mgt=false
persist.cne.bat.based.rat.mgt=false
persist.cne.be.ge.sqi.min=0
persist.cne.be.ge.sqi.max=100
persist.cne.be.umts.sqi.min=0
persist.cne.be.umts.sqi.max=100
persist.cne.be.hspa.sqi.min=0
persist.cne.be.hspa.sqi.max=100
persist.cne.be.1x.sqi.min=0
persist.cne.be.1x.sqi.max=100
persist.cne.be.do.sqi.min=0
persist.cne.be.do.sqi.max=100
persist.cne.be.wlan.sqi.min=0
persist.cne.be.wlan.sqi.max=100
ro.hdmi.enable=true
lpa.decode=false

#system props for the MM modules

media.stagefright.enable-player=true
media.stagefright.enable-http=true

#
# system props for the data modules
#
ro.use_data_netmgrd=true
persist.data_netmgrd_nint=3

#system props for time-services
persist.timed.enable=true

# System props for audio
persist.audio.fluence.mode=endfire
persist.audio.vr.enable=false
persist.audio.hp=true

# System prop to select audio resampler quality
af.resampler.quality=255
persist.af.resampler.quality=255

# System props for SOLS
ro.semc.sols.product-code=103
ro.semc.sols.company-code=5

#
# system prop for opengles version
#
# 131072 is decimal for 0x20000 to report version 2
ro.opengles.version=131072

# NFC
ro.nfc.on.default=false
ro.nfc.se.sim.enable=false
ro.nfc.se.smx.enable=false
ro.nfc.icon.enable=true
ro.nfc.vendor.name=nxp

# prop to indicate what kind of external memory the product have.
ro.semc.product.user_storage=emmc_sdcard
ro.build.characteristics=default

# hwui
ro.hwui.text_cache_width=2048

#Default values/Locales for the hiding languages feature
ro.product.locale.excluded=ar_EG ar_IL fa_IR iw_IL

# Properties controlling Qcom performance patches
net.webkit.setpri=1
net.webkit.cache.mindeadsize=4194304
net.webkit.cache.maxdeadsize=4194304
net.webkit.cache.size=12582912
net.dns.cache_size=512
net.dns.cache_ttl=600
net.early.sockets=0
stathub.pp.prfth=30
net.tcp.fin.aggregation=1
net.dnshostprio.enable=1
net.http.threads=10
net.http.idle_cache.size=40
net.http.idle_cache.shutdown=true
net.nw.cache.prioadvstep=86400000
net.nw.cache.weightadvstep=3600000
net.nw.cache.orderby=weight
stathub.enabled=0

#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.product-res-path=framework/SemcGenericUxpRes.apk
ro.com.android.dataroaming=false
keyguard.no_require_sim=true
ro.com.android.dateformat=MM-dd-yyyy
ro.vendor.extension_library=/system/lib/libqc-opt.so
dalvik.vm.heapstartsize=8m
dalvik.vm.heapgrowthlimit=64m
dalvik.vm.heapsize=256m
ro.setupwizard.mode=DISABLED
ro.com.google.gmsversion=4.0_r7
ro.com.google.clientidbase=android-sonyericsson
ro.sf.lcd_density=320
ro.ril.hsxpa=2
ro.ril.gprsclass=10
ro.semc.xloud.supported=true
ro.usb.pid_suffix=176
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt
ro.service.swiqi2.supported=true
persist.service.swiqi2.enable=1
ro.drm.active.num=4
ro.drm.active.0=marlin,1
ro.drm.active.1=playready,1
ro.drm.active.2=dtla,1
ro.drm.active.3=marlin_import,1

# XTXperience Tweaks

dalvik.vm.verify-bytecode=false
dalvik.vm.dexopt-flags=v=n,o=v,m=y
windowsmgr.max_events_per_sec=240
ro.kernel.android.checkjni=0
ro.kernel.checkjni=0
ro.max.fling_velocity=12000
ro.min.fling_velocity=8000
persist.sys.ui.hw=1
ro.ril.disable.power.collapse=1
pm.sleep_mode=1
View.scroll_friction=10

# Sony Clear Audio+
ro.semc.sound_effects_enabled=true
ro.semc.xloud.supported=true
persist.service.xloud.enable=1
ro.semc.enhance.supported=true
persist.service.enhance.enable=1
ro.semc.clearaudio.supported=true
persist.service.clearaudio.enable=1
ro.sony.walkman.logger=1
persist.service.walkman.enable=1
ro.somc.clearphase.supported=true
persist.service.clearphase.enable=1

# System prop to select MPQAudioPlayer by default on mpq8064
mpq.audio.decode=true

ro.media.enc.jpeg.quality=100
ro.media.dec.jpeg.memcap=12000000
ro.media.enc.hprof.vid.bps=12000000

media.stagefright.enable-meta=true
media.stagefright.enable-scan=false
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.evdo_b=4096,87380,256960,4096,16384,256960

ro.config.nocheckin=1
ro.lge.proximity.delay=25
mot.proximity.delay=25

persist.adb.notify=0

ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=5
ro.HOME_APP_ADJ=1

ro.media.capture.flash=led
ro.media.capture.flashMinV=3300000
ro.media.capture.torchIntensity=40
ro.media.capture.flashIntensity=70

dalvik.vm.execution-mode=int:jit