[Asus  Eee Pad Transformer Prime] chastity:
I have three TF201 and the update worked fine on two of them. The third one which unfortunately is the one I use for work stops in the middle of updating.

Here's the log

cat /cache/recovery/last_log
Starting recovery on Sun Sep 30 13:58:01 2012
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/mmcblk0p1 (null) 0
2 /cache ext4 /dev/block/mmcblk0p2 (null) 0
3 /misc emmc /dev/block/mmcblk0p3 (null) 0
4 /boot emmc boot (null) 0
5 /recovery emmc recovery (null) 0
6 /staging ext3 /dev/block/mmcblk0p4 (null) 0
7 /btmac vfat /dev/block/mmcblk0p5 (null) 0
8 /data ext4 /dev/block/mmcblk0p8 (null) -32768
9 /sdcard vfat /dev/block/mmcblk1p1 /dev/block/mmcblk1 0

I:Got arguments from /cache/recovery/command
Command: "/sbin/recovery" "--update_package=/cache/dlpkgfile"

ro.secure=1
ro.allow.mock.location=0
ro.debuggable=0
persist.sys.usb.config=mtp
ro.build.id=IML74K
ro.build.display.id=IML74K.US_epad-9.4.2.28-20120525
ro.build.version.incremental=US_epad-9.4.2.28-20120525
ro.build.version.sdk=15
ro.build.version.codename=REL
ro.build.version.release=4.0.3
ro.build.date=Fri May 25 14:56:03 CST 2012
ro.build.date.utc=1337928963
ro.build.type=user
ro.build.user=
ro.build.host=Venus
ro.build.tags=release-keys
ro.product.model=EPAD
ro.product.brand=asus
ro.product.name=US_epad
ro.product.device=EeePad
ro.product.board=EeePad
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=asus
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=tegra
ro.build.product=EeePad
ro.build.description=US_epad-user 4.0.3 IML74K US_epad-9.4.2.28-20120525 release
-keys
ro.build.fingerprint=asus/US_epad/EeePad:4.0.3/IML74K/US_epad-9.4.2.28-20120525:
user/release-keys
ro.build.characteristics=tablet
ro.opengles.version=131072
wifi.interface=wlan0
rild.libpath=/system/lib/libril-icera.so
rild.libargs=-e wwan0
persist.tegra.nvmmlite=1
debug.nfc.fw_download=false
debug.nfc.se=false
ro.config.notification_sound=NewMessage.ogg
persist.sys.ringermode=2
ro.config.bootsound=PowerOn.ogg
ro.config.alarm_alert=Alarm_Classic.ogg
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=256m
wifi.version.driver=V6.1.24
gps.version.driver=V6.9.20
keyguard.no_require_sim=true
ro.kernel.qemu=
bt.version.driver=V9.29
drm.service.enabled=1
windowsmgr.max_events_per_sec=200
ro.setupwizard.mode=OPTIONAL
ro.com.google.gmsversion=4.0_r1
gsm.bodysargsm=32,26,29,29
ro.com.google.clientidbase=android-asus
ro.wifi.country=US
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.serialno=BCOKAS125410
ro.bootmode=unknown
ro.baseband=unknown
ro.carrier=wifi-only
ro.bootloader=unknown
ro.hardware=cardhu
ro.revision=0
ro.crypto.state=encrypted
vold.decrypt=1
ro.crypto.fs_type=ext4
ro.crypto.fs_real_blkdev=/dev/block/mmcblk0p8
ro.crypto.fs_mnt_point=/data
ro.crypto.fs_flags=0x00000006
ro.epad.model=TF201
init.svc.recovery=running
init.svc.adbd=running

I:Enable RSA key verification.
Installing update...
Finding update package...
I:Update location: /cache/dlpkgfile
Opening update package...
I:1 key(s) loaded from /res/keys
Verifying update package...
I:comment is 1682 bytes; signature 1664 bytes from end
I:whole-file signature verified against key 0
I:verify_file returned 0
Installing update...
Verifying current system...
file "/system/lib/libGLESv1_CM.so" doesn't have any of expected sha1 sums; check
ing 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/lib/libGLESv1_CM.so",
"ed4c7834196831836c73d0374529a0278c2fa91c", "a52756f5a63c9827632587d025ee28f6773
9bd97")
assert failed: apply_patch_check("/system/lib/libGLESv1_CM.so", "ed4c78341968318
36c73d0374529a0278c2fa91c", "a52756f5a63c9827632587d025ee28f67739bd97")
E:Error in /cache/dlpkgfile
(Status 7)
Installation aborted.
I:result_code: 410
Check and format /storage to vfat if needed...
Mount /btmac successfully
Done.
shell@android:/ #