Need help with a soft-bricked Allwinner A33 tablet - General Questions and Answers

I recently tried to flash a ROM to my Allwinner A33 tablet. Now, when I power it on, the screen is blank - backlit, but nothing else on the screen. My desktop is a Mac mini running OS X 10.11.4. These are the stats for my tablet (taken from "CPU-Z" app):
Cortex Allwinner A33 / 1.20 GHz
SOC
Cores - 4
Architecture - 4x ARM Cortex-A7 @ 1.20 GHz
Revision - r0p5
Process - 40 nm
Clock speed - 120 MHz-1.20 GHz
CPU load - 20%
GPU vendor - ARM
GPU renderer - Mali-400 MP
GPU load - 0%
Scaling governor - unknown
DEVICE
Model - V90 (astar_y3)
Manufacturer - softwinner
Brand - Allwinner
Board - exdroid
Hardware - sun8i
Screen size - 5.83"
Screen resolution - 800x480 pixels
Screen density - 160 dpi
Total RAM - 2048 MB
Available RAM - 1755 MB (85%)
Internal storage - 1.97 GB
Available storage - 0.70 GB (35%)
SYSTEM
Android vers - 4.4.2
API level - 19
Bootloader - unknown
Build ID - astar_y3-eng 4.4.2 KVT49L 20150721 test-keys
Java VM - Dalvik 1.6.0
OpenGL ES - 2.0
Kernel Architecture - armv7I
Kernel vers. - 3.4.39 (20150721)
Android system recovery <3e>
exdroid4.4.2_r2-a33-v2.0
I've tried using adb and fastboot to push and flash files to my tablet, but adb returns an "error: no devices found" message, while fastboot gives me a "-waiting for any device-" message. Prior to the incident, when using the "./adb devices" command, it would return with "device: 033c1976d7f500000000".
I recently downloaded two files: from GitHub, a33_android_device_astar_master.zip; from chinagadgetsreviews, a33_599x_v90_800x480_gc038-gc0308_1211.img. I'm assuming that the latter file is the firmware for my device. Can either of these files be used to restore my system? If so, how, since it seems that I've bricked my tablet and it isn't recognized?
Thanks in advance for any help!

Related

Recovery Image

I have 2 the same tablets see specs below;
SAWEE PAD 10A
Device
Brand: generic
Manufacturer: unknown
Model: wwe10
CPU Hardware: IMAPX200
CPU: ARM v6-compatible processor rev 5 (v6l)
CPU-ABI: armeabi
RAM: DDRII 256MB
OS
VERSION: ERE27
RELEASE: 2.1-update1 V2.6:#3682
KERNEL: 2.6.32.9
SDK: 7
FIRMWARE: eng.infotm-sqa-desktop #78
DISPLAY
DIMENSIONS: 1024x600
DENSITY: Medium (160 dpi)
LOGICAL DENSITY: 1.0
DPI X: 159.5681
DPI Y: 160.42105
By StartUp; It shows on the right side under screen 6.3.2.(677)
One of the tablets could not startup and has no recovery image anymore.
Then I use “flash10.1-android2.2.rar” to flash, this works only I have to switch off the
Auto-rotate-screen because of wrong rotation. Also Wifi works but disconnect many times.
My question; is there a way to get the recovery image from the good working tablet, or where I can find it inside the tablet.
At the moment I’m busy to copy all the files of the good working tablet, it takes day’s before the copy is finish, but from there I can check on my laptop or I can find some recovery image or maybe make from the whole bunch an image.
Who can help me out of here.

change logo initial on amlogic !:>::??

hi pla i want change my tablet logo initial here spesification
cpu type
AMLogic AM8726-M 1000.0 MHZ
PHONE TABLET INFO
ZTE T77 (AMLOGIC)
MORE INFOS
FRCUENCY STATUS NOT SUPPORT
NEON capable (fast video ply back )
RAM memori module 512 mb ddr (usable 383 m
GPU TYPE
mali-400 mp (single core gpu )
Modify message
i have tablet rooted but i cant find were place have logo initial pls any one can help me ?

[Completed] [HELP] Rooting Devant D-Tab 701

I've searching everywhere nothings working on rooting my device Devant D-Tab 701
Here's Tablet Specification
MODEL- DT-701
Series - Orion
CPU - Rockchip (RK3066) ARM Cortex A9 1.6GHz (Dual Core)
Android Platform - Android 4.1.1 (Jelly Bean)
Flash Memory - 8Gb
RAM - 1Gb
DISPLAY PANEL - 7.0"
GPU Type - ARM
GPU Renderer - Mali-400 MP4
GPU (Graphic Processing Unit) - Quad Core
I tried SuperOneClick[x], ZhuoDaShi-2.2.9[x], Manually rooting using psneuter on cmd[x], and flashing update.zip method[x]
is there any other way to root this tab?
While I don't have experience with your specific tablet, I have gone through rooting a similar RK3066 tablet.
Many of the Rockchip tablets already aren't locked down and they just need Superuser or SuperSU installed, but sounds like you may have tried that already.
If it is locked, first I would try Kingo Root.
If you need/want custom recovery, check CWM ported for Rockchip.
If you're lucky, your kernel partition has a valid kernel (mine didn't tho) and the generic RK3066 recovery will work. Make sure you back up your stock recovery first!!!!.
If you need further assistance, please reply on the linked threads.

¿How Root Vulcan Voyager Tablet 7''?

Hi, I have had many problems to root my tablet, I have tried a number of approaches but none has helped me, someone knows how to root my tablet, I'd appreciate it very much please. Thank you for your time.
---Specs---
BuildInfos:
Android version : 4.0.4
Release Codename : REL
API LEVEL : 15
CPU ABI : x86
Manufacturer : GIGABYTE
Bootloader : unknown
CPU ABI2 : armeabi-v7a
Hardware : mfld_dv10
Radio : unknown
Board : mfld
Brand : Vulcan
Device : TM75A
Display : IMM76D
Fingerprint : Vulcan/TM75A/TM75A:4.0.4/IMM76D/1001.234322:user/release-keys
Host : ecs-l2-build
ID : IMM76D
Model : Voyager
Product : TM75A
Tags : release-keys
Type : user
User : liuxs
Memory:
Download Cache Max: 0,98GB/ Free: 0,97GB
data Max: 11,93GB/ Free: 4,42GB
External storage: mounted
External storage Max: 11,93GB/ Free: 4,42GB
External storage removable: false
External storage emulated: true
Total RAM: 0,95GB
Free RAM: 172MB
Threshold RAM: 64,00MB
CPU:
Model Name Intel(R) Atom(TM) CPU Z2460 @ 1.60GHz
CPU MHz 1600.000
Cache size 512 KB
Frequency range: 600.0 -> 1600.0MHz
Current Frequency: 1600.0MHz
Frequency Stats (time):
- 1600.0 MHz 29.08% (7407773)
- 1400.0 MHz 1.33% (339824)
- 1200.0 MHz 1.33% (339533)
- 900.0 MHz 1.41% (360085)
- 600.0 MHz 66.84% (17027781)
¿Can anybody help me? :crying:
I've done rooting it using cydia impactor, try google gigabyte tm75a root impactor, it's a spanish but i've just observe the screenshot, download impactor and intel usb driver, extract impactor open it, turn on usb debugging, on the impactor select usb menu then driver scan then start w8 for driver intallation, select device menu then open shell and reboot.
I have this tablet but is in bootloop, intel flash show it by a couple seconds and tablet keep rebooting, must start a new thread or someone here could be able to help me, thanks.

Costum Rom Rk3168 Empire Electronix Rockchip M1002B, Or backup stock rom?

Happy new year, in the first place!
I thought after reading and reading on inet...Gone try here to get a little bit further with a simple but brand new tablet i got from my mother.
That's also the reason why i don't throw it away, i thought lets see if there is a possibility to make it run better then with the stockrom.
And if there is no solution to flash it, what is the best way to backup the rockchip 3168 with 4.2.2 rom off the tablet itself?
Also to try other roms, i don't wane lose my bootloader etc.
Its a simple tablet, i know..But that's also why, i know it can run much better, especially if the ram is not eaten up too much.
I will put the specs down here:
- System info droid -
Summery :
Brand name: Empire Electronix (Manufacture :Rockchip)
Device : Rockchip M1002B
Android :4.2.2
Processor : RK30board-ARMv7 Processor rev 0 (v7l)
Cpu Max Freq : 1200 Mhz
Cores : 2
System Ram : 1.00GB (Some apps say 1500mb)
Audio Chipset : Rk30sdk
Internal Storage : 1008Mb(132 mb free)
Internal SD : 8gb
GPU : Imagination Technologies PowerVR SGX 540
Display Size : 10.1inch - 1024x600Resolution
Screen Density : 90 ppi (160dpi)
Refresh Rate : 82.34 Hz
Back Camera : 1.9 MP(some apps : 2Mp)
Front Camera : 0.3 Mp
System :
Model : M1002B
Manufacture : Rockchip
Android : 4.2.2
Api Level : 17
Kernel : 3.0.36+20131118....
Compilation : V1.01.JDQ39...
Processor :
Processor : Rk30board
Instructions sets : armeabi-v7a, armeabi
Max Freq : 1200Mhz
Gpu :
Model : PowerVr SGX 540 + Output (Mini Hdmi 1920x1080)
Vendor : ITechnologies
OpenGL Version : OpenGL ES 2.0
Advanced Info:
Viewport size : 2048 x 2048
Sensor :
Freescale Semiconductor
Power C : 0.2mA
Max Range : 39.24
Resolution : 0.15328126
Other chips plus board descriptions :
RK30Board
Rockchip616
S-ilead GSL3680
uP6636Q-PGK38L
Wifi lost number of the chip, was realtek with tv in it.Must make new picture to find out but seemed pretty standard wifi Bgn chip.
Buttons : 3 - Power-Volume up/down
Ports : Mini USB2 OTG - Mini Hdmi(DD-DD5.1) - HeadphoneJack - Mic - MiniSD Card slot-
Rooted.
Its a new tablet, but the hardware is older and because of that i thought lets see if i can get it maybe a little bit upgraded on the software side.
And if not, maybe another solution.
Therefore i searched a lot, but has anyone....Anyone maybe a direction to look for a maybe better rom.Also with cwm there is nothing what works with this chip, everything based on the maligpu400 or maybe also with the powerVr Sgx 540?
Other solution would be to backup the rom, and clean afterwards the stock rom.But i got stuck in how and what is the best way to do that.
I cant install Cwm recovery, when it installs it doesn't continue.
I also read that people lost their original bootloader, and because i cant find the stockrom online...What would be the best way to do that, i saw the app mtk, and the Rockchip tool but that seemed a lot off work and if i mess up my backup would never work.
Or is it the only way to back up this rom from Rockchip, a full backup kerel, loader etc..
And to try out a rom, install from sd card, and to get back on the stockrom a factory reset is all, or mess i up the recovery installing another rom?
If more info is needed about the chips, let me know.
Thanks ahead!:good:
Roberto.
i need this firmware .img , i have tablet genesis gt7320 with rk3168 tv , you can send firmware of you tablet ?

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