Visual Lands Prestige 7L

Introduction


    This is the Visual Lands Prestige 7L Page (or, as it self-identifies, the Softwinner Nuclear ME-107).  I got this to be a cheap Skype-capable backup device for my laptop.  While it does this task properly, I've noticed several glaring problems that make it sort of unsuitable for several other tasks, so I created this page to give some CyanogenMod developers some info on the device, in hopes that it will get a ROM.
    Initial reports that this tablet was already rooted and would give you root access are FALSE.  Trust me, it doesn't let me read some of the ext4 system-related partitions off the device (which would be nice).

Problems


    Here is my list of problems that I have had with the device:
  • It's not rooted.  This device does not allow me to install the Google Play application store, which is far superior to Amazon's application store.  One example of why: search for "text" for text editing applications on Amazon's store returns five results for sex applications and none for a text editor.
  • You cannot "su root".  It would be nice if they gave you the user privelege separation of a Linux computer by allowing a user password and a root password.  And why not?  That way you insert password (even if it's only a PIN) upon start-up (for user) and then for admin actions you can set a root/admin password.  This could make some actions like fixing the default android, and/or installing CyanogenMod easier.  And at $100, why would the company care what you do with the tablet?  At that price point, more people can afford to risk bricking the device to put CyanogenMod or even a full-fledged Linux distribution on it than, say, would be willing to risk such an action on an $800 smart phone.
  • Amazon's application store is retarded (see previous item).  Why would it even list sex-related applications in its store?  There's no prompt for proof that you're of age.  My kids could've installed applications and seen things that are above their age group.
  • The microSD card reader and software behind it assume that you're going to use FAT32.  You can run "mount" and see that its own internal filesystems are ext4: why can't I then use ext4 on the microSD?  I can only guess the software behind it always tries to mount this device as Linux type vfat.  FAT32 and exFAT are not the most efficient or capable filesystems out there.  Linux can detect the filesystem on devices, so why not allow others like ext4?  Case in point, inserting a USB device formatted EXT4 results in "SD card damaged" notification.  After discovering that the tablet doesn't like cfdisk but likes fdisk in terms of creating partitions, I tried once again, but the tablet still reports that an SD card with an EXT4 filesystem is "damaged."
  • Their manual promises that you can encrypt a microSD.  I followed their instructions but the option to encrypt never appears.  I can tell that there are crypto modules on the machine, to include twofish.  Even if it were only a standard of encryption that makes little impact on processing speed and power, it would be nice to have this option.
  • Their software has problems "fixing" microSD cards that it considers "damaged".  Try to do it and it seems to error out somewhere, because then you still don't have the microSD card available for use.  I had to take it out and put it in a Windows computer (until I realized that it's the tablet not liking how cfdisk creates partitions starting at sector zero: using fdisk solved the problem) to format it for use so that this tablet could use it.
  • Once when using the microSD just fine, then restarting the tablet, the microSD then did not work.  I discovered that apparently the tablet zeroized the partition table on the microSD.
  • Forcefully installing Google Play on the device doesn't work: the store closes for no apparent reason upon startup.  I'm wondering if it's because there's some sort of TSR code running to prevent you from using it at all.
  • There are no themes.  Seriously, none, and no way to even pick one or install one.  You'd think they'd let you theme the tablet, but they don't.  It has wallpapers and Live Wallpapers but alas no theme capabilities.
  • The "restore factory condition" feature to reset the tablet resulted in an environment that looks more like what the vanilla CyanogenMod looks like.  Notice I said "looks".  It results in a tablet that's more broken than before, with random hangs, lags, and breaks that defy my memory to write them all down.
  • Plug it into Linux, nothing happens.  It was set up as "as installed" for USB and "USB large storage" was selected.  However, when I click Media Device I get the error message "Unfortunately, the process android.process.media has stopped."  It breaks.
  • The included file manager cannot select multiple files to copy or move at one time.  Let's just say updating one's extensive music collection can become a royal pain, not to mention a write-cycle waste on solid state devices.

Gleaned Information



    Here's some information that I've gleaned from the device:

/proc/cpuinfo:
Processor: ARMv7 Processor rev 2 (v7l)
BogoMIPS: 1001.88
Features: swp half thumb fastmult vfp edsp neon vfpv3
CPU implementer: 0x41
CPU architecture: 7
CPU variant: 0x3
CPU part: 0xc08
CPU revision: 2
Hardware: sun51
Revision: a13b

/proc/interrupts:
         CPU0      
  0:      13449    sw_vic  axp_mfd, pcf8563
  7:     361567    sw_vic  sun5i-i2c.0
  8:    5349687    sw_vic  sun5i-i2c.1
  9:      48218    sw_vic  sun5i-i2c.2
 22:          4    sw_vic  timer0
 23:    3748795    sw_vic  aw clock event irq
 27:    6872155    sw_vic  dma_irq
 28:      30461    sw_vic  ft5x_ts
 31:       2374    sw_vic  sun4ikbd
 32:   10504648    sw_vic  sunxi-mmc
 37:    1430659    sw_vic  nand
 38:       1515    sw_vic
 39:    2291858    sw_vic  ehci_hcd:usb2
 42:      63507    sw_vic  sun5i_csi
 44:    2281009    sw_vic  dev_name
 47:    1140293    sw_vic  dev_name
 53:          0    sw_vic  cedar_dev
 69:     331406    sw_vic  mali_gp_irq_handlers
 70:          0    sw_vic  mali_mmu_irq_handlers
 71:     331090    sw_vic  mali_pp_irq_handlers
 72:          0    sw_vic  mali_mmu_irq_handlers
Err:          0


/proc/modules:
8188eu 686814 0 - Live 0x00000000
mxc622x 6310 0 - Live 0x00000000
rtl8150 10305 0 - Live 0x00000000
mcs7830 7581 0 - Live 0x00000000
qf9700 9152 0 - Live 0x00000000
asix 24601 0 - Live 0x00000000
sun5i_csi0 34140 0 - Live 0x00000000
gc0308 16888 1 - Live 0x00000000
videobuf_dma_contig 6243 1 sun5i_csi0, Live 0x00000000
videobuf_core 20242 2 sun5i_csi0,videobuf_dma_contig, Live 0x00000000
cedarx 11869 0 - Live 0x00000000
mali 114119 10 - Live 0x00000000
ump 34182 23 mali, Live 0x00000000
sun4i_vibrator 2451 0 - Live 0x00000000
ft5x_ts 44577 0 - Live 0x00000000
nand 164126 8 - Live 0x00000000

/proc/mounts:
rootfs / rootfs rw 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600,ptmxmode=000 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
/dev/block/nandd /system ext4 rw,nodev,noatime,user_xattr,barrier=0,data=ordered 0 0
/dev/block/nande /data ext4 rw,nosuid,nodev,noatime,user_xattr,barrier=0,journal_checksum,data=ordered,noauto_da_alloc 0 0
/dev/block/nandh /cache ext4 rw,nosuid,nodev,noatime,user_xattr,barrier=0,journal_checksum,data=ordered,noauto_da_alloc 0 0
/dev/block/vold/93:80 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0

/proc/version:
Linux version 3.0.8+ (dengrichuan@wits) (gcc version 4.5.1 (Sourcery G++ Lite 2010.09-50) ) #13 PREEMPT Thu Feb 28 14:58:26 CST 2013

/system/build.prop:
# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=JRO03C
ro.build.display.id=JRO03C
ro.build.version.incremental=20130301
ro.build.version.sdk=16
ro.build.version.codename=REL
ro.build.version.release=4.1.1
ro.build.date=Fri Mar  1 10:07:04 CST 2013
ro.build.date.utc=1362103624
ro.build.type=user
ro.build.user=dengrichuan
ro.build.host=wits
ro.build.tags=test-keys
ro.product.model=Prestige 7L_4.1
ro.product.brand=softwinners
ro.product.name=nuclear_me107
ro.product.device=nuclear-me107
ro.product.board=nuclear
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=softwinner
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=exDroid
# ro.build.product is obsolete; use ro.product.device
ro.build.product=nuclear-me107
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=nuclear_me107-user 4.1.1 JRO03C 20130301 test-keys
ro.build.fingerprint=softwinners/nuclear_me107/nuclear-me107:4.1.1/JRO03C/20130301:user/test-keys
ro.build.characteristics=tablet
# end build properties

#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.com.android.dateformat=MM-dd-yyyy
ro.config.ringtone=Ring_Synth_04.ogg
ro.config.notification_sound=pixiedust.ogg
ro.carrier=unknown
ro.config.alarm_alert=Alarm_Classic.ogg
drm.service.enabled=true
dalvik.vm.heapsize=48m
ro.kernel.android.checkjni=0
persist.sys.timezone=America/New_York
persist.sys.language=en
persist.sys.country=US
wifi.interface=wlan0
wifi.supplicant_scan_interval=15
debug.egl.hw=1
ro.opengles.version=131072
rild.libargs=-d/dev/ttyUSB2
rild.libpath=/system/lib/libsoftwinner-ril.so
keyguard.no_require_sim=true
persist.sys.strictmode.visual=0
persist.sys.strictmode.disable=1
hwui.render_dirty_regions=false
persist.sys.usb.config=mass_storage,adb
ro.property.tabletUI=true
ro.udisk.lable=NUCLEAR
ro.sys.bootfast=true
ro.product.firmware=v1.2
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt

MODULES:
    While there are too many of these to list one by one, I will list modinfo for one random module I extracted from the device.  They are ARMv7 compiled.  Also, they're GPL.

filename:       ./system-vendor-modules-bma250.ko
license:        GPL
description:    BMA250 driver
author:         Albert Zhang <xu.zhang@bosch-sensortec.com>
srcversion:     9E1B44651808AACD6C1459A
alias:          i2c:bma250
depends:       
vermagic:       3.0.8+ preempt mod_unload modversions ARMv7



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