[Sony Tablet S] pjc007:
So - I have had no time to 'play' with this again until now, but here's the current status:

I've downloaded a bunch of different ROM images to try to flash from SD Card, none of which work. The ones I have are:

20/03/2013 12:18 275,048,607 signed-nbx03_003-ota-121116040.zip

20/03/2013 12:18 244,273,290 signed-nbx03_003-ota-120803004.zip

27/04/2012 09:48 244,388,577 signed-nbx03_001-ota-120410004.zip

20/03/2013 13:22 233,149,440 signed-nbx03_016-ota-120803071.zip

Attempting to flash ANY of those (each done immediately after a "Reset to Factory Settings") results in:

E: Prohibit update as a result of checking version or base sku

Installation aborted.

adb connects, with adb devices showing:

List of devices attached

0123456789ABCDEF recovery

adb shell fails, reporting:

- exec '/system/bin/sh' failed: No such file or directory (2) -

After one of the attempted flashes, and looking in recovery.log, *presumably* the issue is the reported:

Not found detailed sku[27550237] in META-INF/com/android/detailedSKU.lst

But I have no idea how to fix this, so any help would be gratefully received!

More info:

adb pull /tmp retrieves:

pull: building file list...

skipping special file 'prev_vendor'

pull: /tmp/recovery.log -> ./recovery.log

pull: /tmp/nfx_daemon_flash.txt -> ./nfx_daemon_flash.txt

pull: /tmp/random -> ./random

pull: /tmp/last_install -> ./last_install

pull: /tmp/metadata -> ./metadata

pull: /tmp/region.prop -> ./region.prop

6 files pulled. 0 files skipped.

356 KB/s (18244 bytes in 0.050s)

The contents of each (excluding random) are:

recovery.log:

Starting recovery on Wed Mar 11 23:54:08 2009

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 /configs ext2 /dev/block/mmcblk0p1 (null) 0

2 /system0 ext4 /dev/block/mmcblk0p2 (null) 0

3 /system1 ext4 /dev/block/mmcblk0p3 (null) 0

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

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

6 /staging ext4 /dev/block/mmcblk0p6 (null) 0

7 /blflags ext4 /dev/block/mmcblk0p7 (null) 0

8 /datapp ext4 /dev/block/mmcblk0p8 (null) 0

9 /log ext4 /dev/block/mmcblk0p9 (null) 0

10 /data ext4 /dev/block/mmcblk0p10 (null) 0

11 /vsdcard vfat /dev/block/mmcblk0p11 (null) 0

12 /sdcard vfat /dev/block/mmcblk1p1 /dev/block/mmcblk1 0

13 /boot emmc boot (null) 0

14 /recovery emmc recovery (null) 0

15 /system ext4 system (null) 0

16 /vendor0 ext4 /datapp/vendor/vendor0.img (null) 0

17 /vendor1 ext4 /datapp/vendor/vendor1.img (null) 0

Command: "/sbin/recovery"

ro.secure=1

ro.allow.mock.location=0

ro.debuggable=0

persist.sys.usb.config=mtp

ro.build.id=TISU0077

ro.build.display.id=TISU0077

ro.build.version.incremental=120410002

ro.build.version.sdk=15

ro.build.version.codename=REL

ro.build.version.release=4.0.3

ro.build.date=Tue Apr 10 01:08:41 JST 2012

ro.build.date.utc=1333987721

ro.build.type=user

ro.build.user=integ-build

ro.build.host=build9

ro.build.tags=test-keys

ro.product.model=Sony Tablet S

ro.product.brand=Sony

ro.product.name=SYS_001

ro.product.device=nbx03

ro.product.board=nbx03

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.manufacturer=Sony

ro.product.locale.language=en

ro.product.locale.region=US

ro.wifi.channels=

ro.board.platform=tegra

ro.build.product=nbx03

ro.build.description=SYS_001-user 4.0.3 TISU0077 120410002 test-keys

ro.build.fingerprint=Sony/SYS_001/nbx03:4.0.3/TISU0077/120410002:user/test-keys

ro.build.characteristics=tablet

ro.opengles.version=131072

wifi.interface=wlan0

ro.ethernet.interface=eth0

ro.ethernet.autoEnable=yes

rild.libargs=-d /dev/ttyACM1 -i rmnet0

windowsmgr.max_events_per_sec=120

ro.tether.denied=true

ro.sony.sound.enabled=true

ro.sony.update.server=info.update.sony.net

ro.sony.update.category_id=ST001

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.sony.wifisleep=0

drm.service.enabled=true

ro.setupwizard.mode=DISABLED

ro.com.google.gmsversion=4.0.3_r0

ro.com.google.clientidbase=android-sony

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.sony.wan.ipv6.enable=false

ro.sony.dlna.dtcp_pext=0

ro.factorytest=0

ro.bootmode=unknown

ro.baseband=unknown

ro.carrier=unknown

ro.bootloader=0x00000008

ro.hardware=nbx03

ro.revision=0

init.svc.recovery=running

init.svc.nfx_daemon=running

init.svc.adbd=running

-- Install /sdcard ...

Finding update package...

I:Update location: /sdcard/signed-nbx03_003-ota-120803004.zip

Desklunvr update package...

Opening update package...

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

Verifying update package...

I:comment is 1465 bytes; signature 1447 bytes from end

I:whole-file signature verified against key 0

I:verify_file returned 0

Checking version is passed, 111104048 -> 120803004

Not found detailed sku[27550237] in META-INF/com/android/detailedSKU.lst

E:Prohibit update as a result of checking version or base sku

Installation aborted.

nfx_daemon_flash.txt - many, many lines of:

Error opening : /cache/recovery/sign

Error opening : /cache/recovery/sign

Error opening : /cache/recovery/sign

Error opening : /cache/recovery/sign

Error opening : /cache/recovery/sign

last_install:

/sdcard/signed-nbx03_003-ota-120803004.zip

0

metadata:

post-base_sku=nbx03_003

post-build=Sony/SYS_001/nbx03:4.0.3/TISU0R0110/120803000:user/release-keys

post-timestamp=1343979970

post-version=120803004

pre-device=nbx03

region.prop:

ro.sony.sku.version=27550237_9

ro.camera.sound.forced=0

ro.product.locale.language=en

ro.product.locale.region=GB

ro.pss.gamepad.buttonmeaning=cross-enter

ro.sony.network.wwan=1

ro.sony.sku.country=UK

ro.sony.sku.detailed=27550237

ro.sony.update.category_id=ST003

ro.sony.volume_limit=0

ro.sony.wm.atrac=0

ro.sony.wm.clearphase_path=SGPT1_001.LPS

ro.sony.wm.xloud_path=SGPT1_001.XLD