Attend XDA's Second Annual Developer Conference, XDA:DevCon 2014!
5,781,609 Members 42,294 Now Online
XDA Developers Android and Mobile Development Forum

[Solved] CyberNav 7" Chinese tablet- boot loop, doesn't boot- logcat

Tip us?
 
sek111
Old
(Last edited by sek111; 13th May 2012 at 02:51 PM.)
#1  
sek111's Avatar
Member - OP
Thanks Meter 27
Posts: 71
Join Date: Mar 2011

 
DONATE TO ME
Default [Solved] CyberNav 7" Chinese tablet- boot loop, doesn't boot- logcat

Hello, after playing with a tablet I got boot loop so below is solution for this.
This is what I wrote first:
I purchased Chinese tablet called CyberNav, there is link to the website with specs http://www.dracotek.com/cybernav-7-i...b-gps70yw.html It works great and is worth the money. I received- on request- firmware for it, but it is with .img extension and I have no idea how to get to the files. Attached application PhoenixCard should install it on sd card but it does nothing. So there is my question- can anyone help me with it? Possibly root it? Or update to newer firmware version? I'll post a link to, just need to upload it to my dropbox on my next break at work.
Sek

●[HTC Sensation]●[Elegancia™ Rom Series ICS Sense 3.6: Salvation 3.0.1]●

 
andy1weir@hotmail.co.uk
Old
#2  
andy1weir@hotmail.co.uk's Avatar
Senior Member
Thanks Meter 20
Posts: 265
Join Date: Nov 2007
Location: edinburgh
im pretty sure you need a 3rd party application to flash that firmware, i think you load the .img file into the software on your pc, connect tablet in flash/recovery mode then flash it that way, dont know which software you would need to use though , sorry i cant help further
The Following User Says Thank You to andy1weir@hotmail.co.uk For This Useful Post: [ Click to Expand ]
 
sek111
Old
#3  
sek111's Avatar
Member - OP
Thanks Meter 27
Posts: 71
Join Date: Mar 2011

 
DONATE TO ME
There is link to rar package http://db.tt/jm7eHfbq
If there is someone who wants to spend some time... Please help.

●[HTC Sensation]●[Elegancia™ Rom Series ICS Sense 3.6: Salvation 3.0.1]●

The Following User Says Thank You to sek111 For This Useful Post: [ Click to Expand ]
 
sek111
Old
#4  
sek111's Avatar
Member - OP
Thanks Meter 27
Posts: 71
Join Date: Mar 2011

 
DONATE TO ME
Bump

●[HTC Sensation]●[Elegancia™ Rom Series ICS Sense 3.6: Salvation 3.0.1]●

 
sek111
Old
#5  
sek111's Avatar
Member - OP
Thanks Meter 27
Posts: 71
Join Date: Mar 2011

 
DONATE TO ME
Some new infos:
As far I found out tablet is detectable during boot in adb, but it stays in boot loop. I think I've got right usb drivers.
I tried unyaffs the .img file using C:/unyaffs/unyaffs pw08.img but it shows file corrupted (might be wrong method?).
Logcat attached.
Maybe there is someone who will find what it's missing...
Attached Files
File Type: rar logcat1.rar - [Click for QR Code] (21.9 KB, 323 views)

●[HTC Sensation]●[Elegancia™ Rom Series ICS Sense 3.6: Salvation 3.0.1]●

 
sek111
Old
#6  
sek111's Avatar
Member - OP
Thanks Meter 27
Posts: 71
Join Date: Mar 2011

 
DONATE TO ME
I see there is nobody who can help me, so... If some of u have similar problem with chinese tablet- bootloop, can't flash it with LiveSuit our update from sdcard, I found solution which worked for me. Using adb, pulled catalog /dev/data/ to hard disk, then deleted all dalvik cache, installed by me apps and almost every other file from /data on my hard disk. Then typed adb remount, then adb shell rm -r /dev/data/* to delete all data catalog on tablet. Then pushed /data catalog from my hard disk to tablet, and finally adb reboot. And it WORKS! Booting without problems. I wasted 4 days on research how to turn it in flash mode etc. But it was very simple.

Cheers
Sek

●[HTC Sensation]●[Elegancia™ Rom Series ICS Sense 3.6: Salvation 3.0.1]●

 
Serg_VA
Old
#7  
Junior Member
Thanks Meter 0
Posts: 3
Join Date: May 2012
Hi, sek111
It was necessary to use the LiveSuite to flash through usb.
Thank you very much, from your post, I found the firmware for my tablet.
 
sanjaympj
Old
#8  
Junior Member
Thanks Meter 0
Posts: 1
Join Date: Jun 2012
Location: Mumbai
Post An experience with another low cost tablet with Bootloop

I happen to got my tab (Wammy from WickedLeak.org) stuck in BootLoop and was struggling to get a way out for the past 3 days, checking almost all of the posts for this issue!

The tab would stuck on the android loading animation despite running for 2-3 hours and after several hard reboots, it throw-ed following error-

Quote:
Encryption Unsuccessful

encrytion was interupted and cant complete. as a result the data on your tablet is no longer accessible

to resume using your tablet, you must perform a factory reset. when you set up your tab after the reset, u'll hav an opportunity to restore any data that was backed up to ur google account
Despite going for the factory reset, it still didn't workout as the reset activity never completed or proceeded. I happen to be a beginner/noob and was trying my luck with possible solution but was comfortable with ADB stuff and workaround. Well i checked the solution which sek111 offered in this post and it was most closely helped me out. So i would like to Thank him a ton for sharing his solution.

Another method for few others if you don't get through the technical stuff and handling all the flashing tools, i was successful in bringing up the setting window of my tab and chose to do Reset via GUI which worked. Actually my battery got drained out to 7% and a popup message for same displayed while i was on the above error page. I selected the "check battery" option from that pop up and got my way out via factory "Backup and Reset" option under settings.

I hope this might help few people if not all! But the XDA forum is great and everyone will find a solution here. Cheers!!!
 
hellasleeper
Old
#9  
Junior Member
Thanks Meter 0
Posts: 3
Join Date: Sep 2012
So I got this wm8850 chinese generic tablet. The camera is in the front in the middle (wide). It was shipped to me with 4.0.3 in boot loop. I soon found out that it boots into safe mode when I usb to pc. This is the furthest I've gotten with it so far. I can adb into it and have already tried to wipe data. It seems like since its from factory screwed up that a may need to reload the firmware or the os or something. Im kind of a noob because I only have my droid x. I've gotten it out of a boot loop before but I also knew what I had done to cause it so I fixed it. I tried to follow seks adb commands but im too noob to do it I guess. I was able to wipe data and dalvik-cache. Issue still occurs . If anybody can give me some adb commands than can help I would greatly appreciate it. Im fairly sure that I found the firmware elsewhere on xda. I thank you guys for any help at all you can give. I don't wanna send it back without trying everything software related as I can, but ill send it back if I can't fix it or if I brick it

Sent from my DROIDX using xda app-developers app

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Integrate Social Networks Into Your Project With ASNE Library

Social network applications and services have developed into major parts ofour … more

Give Your Android Wear Device a Lock Screen with Lockable

Without a doubt,Android Wear is one of the most frequently talked abouttopics of … more

Forums Added for the LG G Watch R and Samsung Gear S

A little over a week ago, LG “inadvertently” let the world know about the … more

Secrecy App Goes Open Source, New LG Android Wear Device! – XDA Developer TV

Secrecy encryption app goes open source! That and much … more