[Android One (First-Generation) Cross-Device Origin] austinpinto:
problems after backuping stock unrooted and bootloader locked rom

hi all.

i backuped the stock rom on my dream uno without rooting or unlocking the bootloader and got 13 files some with .tar extension some with .tar.a and 1 with .tar.b extension and 2 files with .img extension

now the problem is.

1. if i try to open any file using winrar i get a error the archive is ither in unknown format or is damaged.

2. if i use 7zip to open .tar files i get error there are no trailing 0filled records if i open .tar.a files the files open properly but when i go to extract the contents i get error unable to open output file when i open data.ext4.tar.a i get error unexpected end of archive.tar and if i click on ok i can see the files in the archive but if i go to extract it again the same error unable to open output file comes if i open data.ext4.tar.b i get error 7zip cannot open data.ext4.tar.b as archive what is the problem?

how can i extract the files?

hear is my recovery.log file.

__bionic_open_tzdata: couldn't find any tzdata when looking for localtime!

__bionic_open_tzdata: couldn't find any tzdata when looking for GMT!

__bionic_open_tzdata: couldn't find any tzdata when looking for posixrules!

Starting recovery on Sat Nov 8 14:38:30 2014

No /etc/extra.fstab

recovery filesystem table

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

0 /boot emmc /dev/block/platform/mtk-msdc.0/by-name/boot 0

1 /recovery emmc /dev/block/platform/mtk-msdc.0/by-name/recovery 0

2 /system ext4 /dev/block/platform/mtk-msdc.0/by-name/system 0

3 /data ext4 /dev/block/platform/mtk-msdc.0/by-name/userdata 0

4 /cache ext4 /dev/block/platform/mtk-msdc.0/by-name/cache 0

5 /external_sd auto /dev/block/mmcblk1p1 0

6 /tmp ramdisk ramdisk 0

I:Connected to Vold..

I:200 0 Volumes listed.

I:skiping get_bootloader_message: no /misc

I:skiping set_bootloader_message: no /misc

Checking arguments.

stage is []

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

framebuffer: fd 5 (480 x 854)

PhilZ Touch 6.57.9

ClockworkMod v6.0.5.1

I:Device target: sprout

I:Touch GUI revision: 1.41

I:device_recovery_start()

I:auto_restore_settings set to default (true)

I:check_root_and_recovery set to default (true)

I:compression_value set to default (low)

I:twrp_backup_mode set to default (false)

I:enable_md5sum set to default (1)

I:show_nandroid_size_progress set to default (1)

I:use_nandroid_simple_logging set to default (1)

I:nand_prompt_on_low_space set to default (1)

I:signature_check_enabled set to default (0)

I:install_zip_verify_md5 set to default (0)

I:brightness_user_path=/sys/class/leds/lcd-backlight/brightness

I:set_brightness set to default (160)

I:menu_height_increase set to default (24)

I:show_virtual_keys set to default (true)

I:min_log_rows set to default (3)

I:background_image set to default (default)

I:background_image set to default

I:Default stitch background loaded.

I:show_background_icon set to default (false)

I:show_battery set to default (true)

I:show_clock set to default (true)

I:menu_text_color set to default (8)

I:menu_background_color set to default (1)

I:menu_highlight_color set to default (7)

I:normal_text_color set to default (0)

I:menu_separator_color set to default (6)

I:header_text_color set to default (8)

I:batt_clock_color set to default (2)

I:menu_background_transparency set to default (102)

I:menu_highlight_transparency set to default (102)

I:menu_separator_transparency set to default (102)

I:show_menu_separation set to default (true)

I:dim_timeout set to default (60)

I:blank_timeout set to default (180)

I:scroll_sensitivity set to default (48)

I:touch_accuracy set to default (7)

I:touch_to_validate set to default (true)

I:enable_vibrator set to default (true)

I:boardEnableKeyRepeat set to default (true)

I:wait_after_install set to default (true)

I:slide_left_action set to default (5)

I:slide_right_action set to default (3)

I:double_tap_action set to default (2)

I:press_lift_action set to default (4)

I:press_move_action set to default (1)

I:t_zone set to default (0)

I:t_zone_offset set to default (0)

I:use_dst_time set to default (false)

__bionic_open_tzdata: couldn't find any tzdata when looking for GMT0!

__bionic_open_tzdata: couldn't find any tzdata when looking for posixrules!

I:Current time: 2014-11-08 14:38:32 (UTC 0:00)

I:use_qcom_time_daemon set to default (0)

I:use_qcom_time_data_files set to default (0)

I:use_qcom_time_offset set to default (0)

Command: "/sbin/recovery"

ro.cm.device=sprout

ro.cm.display.version=11-20140925-UNOFFICIAL-sprout

ro.cm.version=11-20140925-UNOFFICIAL-sprout

ro.cm.releasetype=UNOFFICIAL

ro.com.google.clientidbase=android-google

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

ro.com.android.dataroaming=false

ro.com.android.wifi-watchlist=GoogleGuest

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.boot.emmc=0

ro.boot.hardware=sprout

ro.boot.serialno=Mi498HA14090035

ro.boot.bootloader=0.5.17

ro.emmc=0

ro.wifi.channels=

ro.allow.mock.location=0

ro.board.platform=mt6582

ro.build.id=KTU84Q

ro.build.date=Thu Sep 25 13:18:39 EDT 2014

ro.build.date.utc=0

ro.build.host=ketan

ro.build.tags=test-keys

ro.build.type=userdebug

ro.build.user=root

ro.build.display.id=cm_sprout-userdebug 4.4.4 KTU84Q b75c7a7c94 test-keys

ro.build.product=sprout

ro.build.selinux=1

ro.build.version.sdk=19

ro.build.version.release=4.4.4

ro.build.version.codename=REL

ro.build.version.incremental=b75c7a7c94

ro.build.description=cm_sprout-userdebug 4.4.4 KTU84Q b75c7a7c94 test-keys

ro.build.fingerprint=Micromax/cm_sprout/sprout:4.4.4/KTU84Q/b75c7a7c94:userdebug/test-keys

ro.build.characteristics=default

ro.config.ringtone=Orion.ogg

ro.config.alarm_alert=Hassium.ogg

ro.config.notification_sound=Argon.ogg

ro.secure=1

ro.carrier=unknown

ro.cmlegal.url=http://www.cyanogenmod.org/docs/privacy

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.name=cm_sprout

ro.product.board=

ro.product.brand=Micromax

ro.product.model=A1

ro.product.device=sprout

ro.product.locale.region=US

ro.product.locale.language=en

ro.product.manufacturer=Micromax

ro.baseband=unknown

ro.bootmode=unknown

ro.hardware=sprout

ro.revision=0

ro.serialno=Mi498HA14090035

ro.bootloader=0.5.17

ro.debuggable=1

ro.modversion=11-20140925-UNOFFICIAL-sprout

ro.rommanager.developerid=cyanogenmod

ro.factorytest=0

ro.setupwizard.enterprise_mode=1

net.bt.name=Android

net.change=net.bt.name

init.svc.adbd=running

init.svc.vold=running

init.svc.healthd=running

init.svc.ueventd=running

init.svc.recovery=running

init.svc.setup_adbd=stopped

dalvik.vm.lockprof.threshold=500

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

persist.sys.dun.override=0

persist.sys.usb.config=adb

persist.sys.dalvik.vm.lib=libdvm.so

persist.sys.dalvik.multithread=false

persist.sys.root_access=1

persist.sys.recovery_update=false

service.adb.root=1

keyguard.no_require_sim=true

I:Checking for extendedcommand & OpenRecoveryScript...

I:Ignoring 'extendedcommand' boot-script: file not found

I:Ignoring 'openrecoveryscript' boot-script: file not found

I:Checking for recovery lock...

I:skiping set_bootloader_message: no /misc

I:skiping set_bootloader_message: no /misc

I:skiping set_bootloader_message: no /misc

I:skiping set_bootloader_message: no /misc

I:blank_timeout was set to 300

I:blank_timeout was set to 600

I:blank_timeout was set to 900

I:blank_timeout was set to 1800

I:blank_timeout was set to 0

I:dim_timeout was set to 120

I:dim_timeout was set to 180

I:dim_timeout was set to 240

I:dim_timeout was set to 300

I:dim_timeout was set to 0

I:skiping set_bootloader_message: no /misc

No files found.

I:ro.modversion set to default (noname)

I:ro.romversion set to default (noname)

I:ro.build.display.id=KPW53

I:Checking needed space for backup '/external_sd/clockworkmod/backup/2014-11-08.14.40.12_KPW53'

I:found device mmcblk link: '/dev/block/platform/mtk-msdc.0/by-name/recovery' -> '/dev/block/mmcblk0p8'

I:/recovery backup size (/proc)=10Mb

I:found device mmcblk link: '/dev/block/platform/mtk-msdc.0/by-name/boot' -> '/dev/block/mmcblk0p7'

I:/boot backup size (/proc)=10Mb

I:/system backup size (stat)=692Mb

I:/cache backup size (stat)=4Mb

I:/data: tot size=2322Mb, free=730Mb, backup size=1538Mb, used=1538Mb, media=0Mb

I:/external_sd/.android_secure backup size=5Mb

>> Free space: 6875Mb (90%)

>> Needed space: 2260Mb

>> Backing up /boot...

Backing up boot image...

Backup of boot image completed.

>> Backing up /recovery...

Backing up recovery image...

Backup of recovery image completed.

>> Backing up /system...

Press Back to cancel.

Backup of system completed.

>> Backing up /data...

Press Back to cancel.

Backup of data completed.

>> Backing up /external_sd/.android_secure...

Press Back to cancel.

Backup of .android_secure completed.

>> Backing up /cache...

Press Back to cancel.

Backup of cache completed.

I:No sd-ext found. Skipping backup of sd-ext.

>> Generating md5 sum...

> .android_secure.vfat.tar.a

> .android_secure.vfat.tar

> boot.img

> cache.ext4.tar

> cache.ext4.tar.a

> data.ext4.tar.a

> data.ext4.tar.b

> data.ext4.tar

> recovery.img

> system.ext4.tar.a

> system.ext4.tar