[Thinkpad Tablet Android Development] obscure.detour:
You can find it within the OTA2 update.zip. Open the file in a archive manager of your choice and you'll find that file within the /recovery directory. Hope that helps.

On another note. Sorry I haven't been around this thread. School is kicking my ass this semester. Anyway, I still have random reboots in CWR. I've successfully completed one backup, out of probably 5-6 tried. I can't seem to pinpoint why it reboots.

Here is my most recent recovery.log:

Starting recovery on Fri Feb 17 22:03:43 2012
can't open /dev/tty0: No such file or directory
framebuffer: fd 3 (1280 x 800)
CWM-based Recovery v5.5.0.4
recovery filesystem table
=========================
0 /tmp ramdisk (null) (null) 0
1 /recovery emmc /dev/block/mmcblk0p1 (null) 0
2 /boot emmc /dev/block/mmcblk0p2 (null) 0
3 /system ext4 /dev/block/mmcblk0p3 (null) 0
4 /cache ext4 /dev/block/mmcblk0p4 (null) 0
5 /misc emmc /dev/block/mmcblk0p5 (null) 0
6 /staging emmc /dev/block/mmcblk0p8 (null) 0
7 /data ext4 /dev/block/mmcblk0p10 (null) 0
8 /sdcard vfat /dev/block/mmcblk1p1 (null) 0
9 /usbdrive vfat /dev/block/sda1 (null) 0

W:Unable to get recovery.fstab info for /datadata during fstab generation!
W:Unable to get recovery.fstab info for /emmc 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.secure=0
ro.allow.mock.location=1
ro.debuggable=1
persist.sys.usb.config=adb
ro.build.id=MR1
ro.build.display.id=full_ventana-eng 4.0.3 MR1 eng.logxen.20120126.172616 test-keys
ro.build.version.incremental=eng.logxen.20120126.172616
ro.build.version.sdk=15
ro.build.version.codename=REL
ro.build.version.release=4.0.3
ro.build.date=Thu Jan 26 17:31:37 PST 2012
ro.build.date.utc=1327627898
ro.build.type=eng
ro.build.user=logxen
ro.build.host=ubuntu
ro.build.tags=test-keys
ro.product.model=Full Android on Emulator
ro.product.brand=Android
ro.product.name=full_ventana
ro.product.device=ventana
ro.product.board=ventana
ro.product.cpu.abi=armeabi
ro.product.manufacturer=unknown
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=unknown
ro.build.product=ventana
ro.build.description=full_ventana-eng 4.0.3 MR1 eng.logxen.20120126.172616 test-keys
ro.build.fingerprint=Android/full_ventana/ventana:4.0.3/MR1/eng.logxen.20120126.172616:eng/test-keys
ro.build.characteristics=default
ro.cm.device=ventana
keyguard.no_require_sim=true
ro.com.android.dataroaming=true
ro.com.android.dateformat=MM-dd-yyyy
ro.config.ringtone=Ring_Synth_04.ogg
ro.config.notification_sound=pixiedust.ogg
ro.config.alarm_alert=Alarm_Classic.ogg
ro.ril.hsxpa=1
ro.ril.gprsclass=10
ro.kernel.android.checkjni=1
ro.setupwizard.mode=OPTIONAL
net.bt.name=Android
net.change=net.bt.name
dalvik.vm.stack-trace-file=/data/anr/traces.txt
ro.factorytest=0
ro.serialno=
ro.bootmode=unknown
ro.baseband=unknown
ro.carrier=unknown
ro.bootloader=unknown
ro.hardware=ventana
ro.revision=0
ro.emmc=0
init.svc.recovery=running
init.svc.adbd=running

I:Checking for extendedcommand...
I:Skipping execution of extendedcommand, file not found...
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory

Like I said above. I cannot seem to figure out why it reboots. Seems pretty random to me. It does not seem to be associated with making a backup. As my CWR will reboot even without making a backup.

EDIT:

Here is another attempt at a backup and a rebooted CWR log. I don't see any difference to the one above.

Starting recovery on Fri Feb 17 22:21:39 2012
can't open /dev/tty0: No such file or directory
framebuffer: fd 3 (1280 x 800)
CWM-based Recovery v5.5.0.4
recovery filesystem table
=========================
0 /tmp ramdisk (null) (null) 0
1 /recovery emmc /dev/block/mmcblk0p1 (null) 0
2 /boot emmc /dev/block/mmcblk0p2 (null) 0
3 /system ext4 /dev/block/mmcblk0p3 (null) 0
4 /cache ext4 /dev/block/mmcblk0p4 (null) 0
5 /misc emmc /dev/block/mmcblk0p5 (null) 0
6 /staging emmc /dev/block/mmcblk0p8 (null) 0
7 /data ext4 /dev/block/mmcblk0p10 (null) 0
8 /sdcard vfat /dev/block/mmcblk1p1 (null) 0
9 /usbdrive vfat /dev/block/sda1 (null) 0

W:Unable to get recovery.fstab info for /datadata during fstab generation!
W:Unable to get recovery.fstab info for /emmc 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.secure=0
ro.allow.mock.location=1
ro.debuggable=1
persist.sys.usb.config=adb
ro.build.id=MR1
ro.build.display.id=full_ventana-eng 4.0.3 MR1 eng.logxen.20120126.172616 test-keys
ro.build.version.incremental=eng.logxen.20120126.172616
ro.build.version.sdk=15
ro.build.version.codename=REL
ro.build.version.release=4.0.3
ro.build.date=Thu Jan 26 17:31:37 PST 2012
ro.build.date.utc=1327627898
ro.build.type=eng
ro.build.user=logxen
ro.build.host=ubuntu
ro.build.tags=test-keys
ro.product.model=Full Android on Emulator
ro.product.brand=Android
ro.product.name=full_ventana
ro.product.device=ventana
ro.product.board=ventana
ro.product.cpu.abi=armeabi
ro.product.manufacturer=unknown
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=unknown
ro.build.product=ventana
ro.build.description=full_ventana-eng 4.0.3 MR1 eng.logxen.20120126.172616 test-keys
ro.build.fingerprint=Android/full_ventana/ventana:4.0.3/MR1/eng.logxen.20120126.172616:eng/test-keys
ro.build.characteristics=default
ro.cm.device=ventana
keyguard.no_require_sim=true
ro.com.android.dataroaming=true
ro.com.android.dateformat=MM-dd-yyyy
ro.config.ringtone=Ring_Synth_04.ogg
ro.config.notification_sound=pixiedust.ogg
ro.config.alarm_alert=Alarm_Classic.ogg
ro.ril.hsxpa=1
ro.ril.gprsclass=10
ro.kernel.android.checkjni=1
ro.setupwizard.mode=OPTIONAL
net.bt.name=Android
net.change=net.bt.name
dalvik.vm.stack-trace-file=/data/anr/traces.txt
ro.factorytest=0
ro.serialno=
ro.bootmode=unknown
ro.baseband=unknown
ro.carrier=unknown
ro.bootloader=unknown
ro.hardware=ventana
ro.revision=0
ro.emmc=0
init.svc.recovery=running
init.svc.adbd=running

I:Checking for extendedcommand...
I:Skipping execution of extendedcommand, file not found...
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory
failed to open /sys/class/android_usb/android0/state: No such file or directory