[Sony Xperia P, U, Sola, Go] LastSoul88:
but the same zip file can be install using your recovery v3. why for v4 it cant? looks like I will downgrade to v3 recovery.. ;)

anyway, this is full log for recovery v4..

Starting recovery on Thu Oct 18 17:46:22 2012
can't open /dev/tty0: No such file or directory
framebuffer: fd 3 (480 x 854)
killall: adbd: no process killed
recovery filesystem table
=========================
0 /tmp ramdisk (null) (null) 0
1 /cache ext4 /dev/block/mmcblk0p12 (null) 0
2 /data ext4 /dev/block/mmcblk0p11 (null) 0
3 /system ext4 /dev/block/mmcblk0p10 (null) 0
4 /sdcard vfat /dev/block/mmcblk0p14 (null) 0
5 /boot emmc /dev/block/mmcblk0p9 (null) 0
6 /emmc vfat /dev/block/mmcblk1p1 /dev/block/mmcblk1 0

touch: /etc/mtab: Read-only file system
W:Unable to create /etc/fstab!
I:Processing arguments.
I:Checking arguments.
I:device_recovery_start()
Command: "/sbin/recovery"

ro.setupwizard.mode=DISABLED
drm.service.enabled=true
ro.semc.sim.bip.enabled=true
ro.secure=0
ro.allow.mock.location=0
ro.debuggable=1
persist.service.adb.enable=1
ro.semc.version.sw=1254-4241
ro.semc.version.sw_revision=6.1.1.B.1.10
ro.semc.version.sw_variant=GENERIC
ro.semc.version.sw_type=user
ro.factorytest=0
ro.serialno=BX902ZEU4L
ro.bootmode=unknown
ro.baseband=unknown
ro.carrier=unknown
ro.bootloader=s1
ro.hardware=st-ericsson
ro.revision=0
ro.crypto.state=unsupported
ro.crypto.fs_type=ext4
ro.crypto.fs_real_blkdev=/dev/block/mmcblk0p11
ro.crypto.fs_mnt_point=/data
ro.crypto.fs_options=noauto_da_alloc
ro.crypto.fs_flags=0x00000406
net.tcp.buffersize.default=4096,87380,110208,4096,16384,110208
net.change=net.webkit.cache.maxdeadsize
net.tcp.buffersize.wifi=524288,1048576,2097152,262144,524288,1048576
net.tcp.buffersize.lte=524288,1048576,2097152,262144,524288,1048576
net.tcp.buffersize.umts=4094,87380,110208,4096,16384,110208
net.tcp.buffersize.hspa=4094,87380,262144,4096,16384,262144
net.tcp.buffersize.edge=4093,26280,35040,4096,16384,35040
net.tcp.buffersize.gprs=4092,8760,11680,4096,8760,11680
system_init.startsurfaceflinger=0
net.http.idle_cache.size=40
net.http.threads=10
net.webkit.cache.size=12582912
net.nw.cache.prioadvstep=86400000
net.nw.cache.weightadvstep=3600000
net.nw.cache.orderby=weight
net.http.idle_cache.shutdown=true
net.webkit.cache.mindeadsize=4194304
net.webkit.cache.maxdeadsize=4194304
icc.hotswap=supported
wifi.interface=wlan0
bt.hfp.wideband=1
ro.wifi.eap_sim_enabled=true
sys.usb.state=mass_storage,adb
sys.usb.config=mass_storage,adb
init.svc.adbd=running
persist.sys.usb.config=mass_storage,adb

I:Checking for extendedcommand...
I:Skipping execution of extendedcommand, file not found...

and this is recovery v3..

Starting recovery on Fri Oct 19 00:07:29 2012
can't open /dev/tty0: No such file or directory
framebuffer: fd 3 (480 x 854)
recovery filesystem table
=========================
0 /tmp ramdisk (null) (null) 0
1 /cache ext4 /dev/block/mmcblk0p12 (null) 0
2 /data ext4 /dev/block/mmcblk0p11 (null) 0
3 /system ext4 /dev/block/mmcblk0p10 (null) 0
4 /sdcard vfat /dev/block/mmcblk0p14 (null) 0
5 /boot emmc /dev/block/mmcblk0p9 (null) 0
6 /emmc vfat /dev/block/mmcblk1p1 /dev/block/mmcblk1 0

W:Unable to get recovery.fstab info for /datadata during fstab generation!
W:Unable to get recovery.fstab info for /sd-ext during fstab generation!
I:Completed outputting fstab.
I:Processing arguments.
I:Checking arguments.
I:device_recovery_start()
Command: "/sbin/recovery"

ro.setupwizard.mode=DISABLED
persist.sys.usb.config=mtp,adb
drm.service.enabled=true
ro.semc.sim.bip.enabled=true
ro.secure=0
ro.allow.mock.location=0
ro.debuggable=1
persist.service.adb.enable=
ro.semc.version.sw=1254-4241
ro.semc.version.sw_revision=6.1.1.B.1.10
ro.semc.version.sw_variant=GENERIC
ro.semc.version.sw_type=user
ro.factorytest=0
ro.serialno=BX902ZEU4L
ro.bootmode=unknown
ro.baseband=unknown
ro.carrier=unknown
ro.bootloader=s1
ro.hardware=st-ericsson
ro.revision=0
ro.crypto.state=unsupported
ro.crypto.fs_type=ext4
ro.crypto.fs_real_blkdev=/dev/block/mmcblk0p11
ro.crypto.fs_mnt_point=/data
ro.crypto.fs_options=noauto_da_alloc
ro.crypto.fs_flags=0x00000406
init.svc.cspsa=stopped
init.svc.tad=stopped
ro.build.date=Mon Sep 10 16:04:56 2012
ro.build.date.utc=1347285896
ro.build.user=BuildUser
ro.build.host=BuildHost
ro.build.product=MT27i
ro.build.description=MT27i-user 4.0.4 6.1.1.B.1.10 9bt3zw test-keys
ro.product.brand=SEMC
ro.product.name=MT27i_1261-5981
ro.product.device=MT27i
ro.build.tags=release-keys
ro.build.fingerprint=SEMC/MT27i_1261-5981/MT27i:4.0.4/6.1.1.B.1.10/9bt3zw:user/release-keys
ro.semc.version.cust=1261-5981
ro.semc.version.cust_revision=R4G
ro.config.ringtone=xperia.ogg
ro.config.notification_sound=notification.ogg
ro.config.alarm_alert=alarm.ogg
ro.semc.content.number=PA7
ro.semc.version.fs_revision=6.1.1.B.1.10
ro.build.id=6.1.1.B.1.10
ro.build.display.id=6.1.1.B.1.10
ro.semc.product.model=MT27i
ro.semc.ms_type_id=AAD-3880134-BV
ro.semc.version.fs=WORLD
ro.semc.product.name=XPERIA sola
ro.semc.product.device=MT27
ro.product.model=MT27i
ro.build.version.incremental=9bt3zw
ro.build.version.sdk=15
ro.build.version.codename=REL
ro.build.version.release=4.0.4
ro.build.type=user
ro.product.board=montblanc
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=Sony
ro.product.locale.language=en
ro.product.locale.region=GB
ro.wifi.channels=
ro.board.platform=montblanc
ro.build.characteristics=nosdcard
rild.libpath=/system/lib/libu300-ril.so
rild.libargs=-c UNIX -n 2 -p /dev/socket/at_core -s /dev/socket/at_core -i rmnet
ro.opengles.version=131072
debug.sf.hw=1
hwui.render_dirty_regions=false
ro.semc.batt.capacity=1500
ro.semc.batt.test.z_threshold=50
ro.semc.batt.test.min_level=70
ro.semc.sols.product-code=106
ro.semc.sols.company-code=5
ste.nmf.autoidle=1
ste.dbus.bus.address=unix:path=/dev/socket/dbus_ste
ro.telephony.call_ring.multiple=false
ro.semc.product.user_storage=emmc_sdcard
ro.nfc.on.default=false
ro.nfc.se.sim.enable=true
ro.nfc.se.smx.enable=false
ro.nfc.icon.enable=true
ro.nfc.vendor.name=nxp
ro.product.locale.excluded=ar_EG ar_IL fa_IR iw_IL
ste.video.decoder.max.hwmem=0x2600000
ste.video.decoder.max.res=720p
ste.video.decoder.h264.max.lev=3.2
ste.video.dec.mpeg4.in.size=8192
ste.video.enc.out.buffercnt=5
ste.video.dec.recycle.delay=1
ste.special_fast_dormancy=false
persist.audio.hp=true
ro.product-res-path=framework/SemcGenericUxpRes.apk
ro.com.google.gmsversion=4.0_r4
ro.com.google.clientidbase=android-sonyericsson
keyguard.no_require_sim=true
ro.com.android.dateformat=MM-dd-yyyy
ro.com.android.dataroaming=false
ro.semc.xloud.supported=true
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=128m
ro.sf.lcd_density=240
ro.am.max_recent_tasks=8
ro.usb.pid_suffix=173
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
net.change=net.webkit.cache.maxdeadsize
dalvik.vm.stack-trace-file=/data/anr/traces.txt
ro.service.swiqi.supported=true
persist.service.swiqi.enable=0
ro.drm.active.num=3
ro.drm.active.0=marlin,1
ro.drm.active.1=hdcp_av8100,1
ro.drm.active.2=playready,0
persist.chargemon.active=1
persist.sys.profiler_ms=0
persist.sys.timezone=Asia/Kuala_Lumpur
persist.sys.language=en
persist.sys.country=GB
persist.sys.localevar=
persist.sys.boot.sound.volume=13
net.tcp.buffersize.default=4096,87380,110208,4096,16384,110208
net.tcp.buffersize.wifi=524288,1048576,2097152,262144,524288,1048576
net.tcp.buffersize.lte=524288,1048576,2097152,262144,524288,1048576
net.tcp.buffersize.umts=4094,87380,110208,4096,16384,110208
net.tcp.buffersize.hspa=4094,87380,262144,4096,16384,262144
net.tcp.buffersize.edge=4093,26280,35040,4096,16384,35040
net.tcp.buffersize.gprs=4092,8760,11680,4096,8760,11680
system_init.startsurfaceflinger=0
net.http.idle_cache.size=40
net.http.threads=10
net.webkit.cache.size=12582912
net.nw.cache.prioadvstep=86400000
net.nw.cache.weightadvstep=3600000
net.nw.cache.orderby=weight
net.http.idle_cache.shutdown=true
net.webkit.cache.mindeadsize=4194304
net.webkit.cache.maxdeadsize=4194304
icc.hotswap=supported
wifi.interface=wlan0
bt.hfp.wideband=1
ro.wifi.eap_sim_enabled=true
sys.usb.config=mtp,adb
init.svc.adbd=running
sys.usb.state=mass_storage,adb

I:Checking for extendedcommand...
I:Skipping execution of extendedcommand, file not found...