[Acer Iconia A500] saniol:
Can't update

Here is my log. Help?

Starting recovery on Fri May 27 08:10:57 2011

can't open /dev/tty0: No such file or directory

framebuffer: fd 3 (1280 x 800)

recovery filesystem table

=========================

0 /tmp ramdisk (null) (null) 0

1 /system ext4 /dev/block/mmcblk0p3 (null) 0

2 /data ext4 /dev/block/mmcblk0p8 (null) 0

3 /cache ext4 /dev/block/mmcblk0p4 (null) 0

4 /misc emmc /dev/block/mmcblk0p5 (null) 0

5 /flex ext4 /dev/block/mmcblk0p6 (null) 0

6 /mnt/sdcard vfat /dev/block/mmcblk1p1 (null) 0

7 /boot emmc /dev/block/mmcblk0p2 (null) 0

8 /aboot emmc /dev/block/mmcblk0p8 (null) 0

9 /recovery emmc /dev/block/mmcblk0p1 (null) 0

I:Got arguments from /cache/recovery/command

Command: "/sbin/recovery" "--update_package=CACHE:acer_ug/update.zip"

(replacing path "CACHE:acer_ug/update.zip" with "/cache/acer_ug/update.zip")

ro.secure=1

ro.allow.mock.location=0

ro.debuggable=0

persist.service.adb.enable=0

ro.build.id=HRI66

ro.build.display.id=Acer_A500_1.104.01_COM_GEN1

ro.build.system.id=Acer_A500_1.104_COM_GEN1

ro.build.version.incremental=eng.hermit.20110329.214429

ro.build.version.sdk=11

ro.build.version.codename=REL

ro.build.version.release=3.0.1

ro.build.date=Tue Mar 29 21:45:25 CST 2011

ro.build.date.utc=1301406325

ro.build.type=user

ro.build.user=hermit

ro.build.host=apple

ro.build.tags=release-keys

ro.product.model=A500

ro.product.brand=acer

ro.product.name=picasso_generic1

ro.product.device=ventana

ro.product.board=ventana

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.manufacturer=Acer

ro.product.locale.language=en

ro.product.locale.region=US

ro.wifi.channels=

ro.board.platform=tegra

ro.build.product=ventana

ro.build.description=picasso_generic1-user 3.0.1 HRI66 eng.hermit.20110329.214429 release-keys

ro.build.fingerprint=acer/picasso_generic1/ventana:3.0.1/HRI66/eng.hermit.20110329.214429:user/release-keys

ro.build.characteristics=tablet,nosdcard

ro.opengles.version=131072

wifi.interface=wlan0

keyguard.no_require_sim=1

ro.dinfo.version=1.0

ro.cpu.vendor=nVidia

ro.cpu.speed=1.0 GHz

ro.cpu.version=T20

ro.config.notification_sound=OnTheHunt.ogg

ro.config.alarm_alert=Alarm_Classic.ogg

dalvik.vm.heapstartsize=5m

dalvik.vm.heapgrowthlimit=48m

dalvik.vm.heapsize=256m

ro.setupwizard.mode=REQUIRED

ro.com.google.gmsversion=3.0_r1

ro.com.google.clientidbase=android-acer

acer.sync.adb.mode=ENABLED

dalvik.vm.dexopt-flags=m=y

net.bt.name=Android

net.change=net.bt.name

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

ro.factorytest=0

ro.bootmode=unknown

ro.baseband=unknown

ro.carrier=unknown

ro.bootloader=unknown

ro.ram.size=1GB

ro.hardware=ventana

ro.revision=0

init.svc.recovery=running

ro.aceruuid=fffffffffffffffe0b9a540743e

ro.build.sku=3G

ro.product.modelalias=A501

ro.ec.version=21010000

ro.device.sn=xeh60pn002114203a61500

ro.serialno=11413200615

ro.flash.density=16GB

init.svc.adbd=stopped

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

E:/dev/block/mmcblk1 does not exist

Finding update package...

I:Update location: /cache/acer_ug/update.zip

Opening update package...

I:1 key(s) loaded from /res/keys

Verifying update package...

I:comment is 1690 bytes; signature 1672 bytes from end

I:whole-file signature verified

I:verify_file returned 0

Installing update...

Verifying current system...

file "/system/build.prop" doesn't have any of expected sha1 sums; checking cache

failed to stat "/cache/saved.file": No such file or directory

failed to load cache file

script aborted: assert failed: apply_patch_check("/system/build.prop", "cafbdcd1a799b740065d1f887439f872d18124a7", "0ad3bf92b6934497e603c391e92b1724522368f7")

assert failed: apply_patch_check("/system/build.prop", "cafbdcd1a799b740065d1f887439f872d18124a7", "0ad3bf92b6934497e603c391e92b1724522368f7")

E:Error in /cache/acer_ug/update.zip

(Status 7)

Installation aborted.