[Solved] CyberNav 7" Chinese tablet- boot loop, doesn't boot- logcat - Android Q&A, Help & Troubleshooting

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-...ps-navigator-ultra-slim-wifi-8gb-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

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

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

Bump

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...

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

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.

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-
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
Click to expand...
Click to collapse
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!!!

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

i have same problem in my china mobile.. dupad k1 ... after in installed new boot screen, device stuck in boot... please help to recover my device in step by step....

Related

[Q]

(android.process.acore has stopped unexpectedly. Please try again. FC.) Seeing this message constantly, can't get into settings to reset g tab to factory settings, can't pull up keyboard, can't get into any of the recovery modes, etc...
Tried to nvflash g tab with no success, not sure what the problem is and I'm at my wits end, PLEASE HELP ME, ANYBODY!!!!!!!!!!!!
Not sure what ROM you're using but if you can get into recovery mode you can access Fix Permissions from there.
Advanced > Fix Permissions.
I tried pressing the power and volume+ at the same time, it goes to the recovery image, then directly to completeing the boot process, it won't let me into the recovery mode. Ant suggestions?
Have you got clockworkmod installed?
No sir. But I can't get into recovery mod at all, nor settings, keyboard, nothing.
http://forum.xda-developers.com/showthread.php?t=896395
You need clockworkmod first.http://forum.xda-developers.com/showthread.php?t=865245
I can't get into recovery mode to install clockworkmod with the tablet nor can I get into or access settings, contacts, calendar, keyboard, because each time I try to access the things listed, I get the same error message; the process android.process.acore has stopped unexpectedly.please try again.
Sent from my PC36100 using XDA App
duplaine1 said:
(android.process.acore has stopped unexpectedly. Please try again. FC.) Seeing this message constantly, can't get into settings to reset g tab to factory settings, can't pull up keyboard, can't get into any of the recovery modes, etc...
Tried to nvflash g tab with no success, not sure what the problem is and I'm at my wits end, PLEASE HELP ME, ANYBODY!!!!!!!!!!!!
Click to expand...
Click to collapse
You say: tried nvflash with no success, means you cannot nvflash your tablet or you did but this did not help? I assume you cannot finish nvflash...
Btw, what ROM is in your gtablet?
Im not sure, w/o being able to access the system of the tablet, Im really not sure. Everytime I try to access the system for things like settings, contacts, calendar, I continue to get the same message in the post above. The onscreen keyboard won't come up either.
Its your contacts. If you can wipe your contacts it will go away. Sometimes when syncing your contacts partial data gets sent and is displayed as unknown. This contact has no info and causes s the process.acore problem.
You can even just delete the corrupted contacts and it will go away.
If somehow you can get to settings,apps,manage apps, then select the contacts app and clear cash and data.
Good luck. You can do this, just take your time and use fast fingers.
you can try in adb:
adb shell rm /data/data/com.android.providers.contacts/databases/contacts2.db
Does anyone else know of a way to gain access to contacts, tablet settings, onscreen keyboard, or calendar, or for that matter, delete corrupted contacts?
A little bit more help Vald_z, what is adb?
ADB info is:
here
Info for newbies:
List of Important Links
duplaine1 said:
A little bit more help Vald_z, what is adb?
Click to expand...
Click to collapse
If you cannot get into settings or some kind other file manager normal way and delete this contact database then ADB might be your chance. ADB stands for Android Debug Bridge.
Basically you connect gtablet to your PC and if PC got SDK driver installed you can access your tablet file system through ADB command.
PS: I thought that since you were talking about nvflash then you already know about ADB. Well, also nvflash should recreate all partitions on your gtablet. When you run nvflash, you should see kind of progress messages and it should finish without errors then you might be sure you nvflashed your gtablet.
On other thought, nvflash doesn't touch partitions on SDCARD and I don't have my gtablet at a moment to verify where DATA partition is.
Could nvflash cwm and have cwm clear cash or factory reset data. It will take you about half an hour to read up on it and about 10 min to setup and flash.
Oh and in the future, checking the contacts and deletion of the unknowns should become part of the flashing a new rom process. If you have gotten it once you will get it again. Its corrupt data on Google's side so any time contacts is synced they could pop up. Turn of auto sync contacts and check your contacts first thing after you boot up a new rom.
You can install CWM via nvflash
http://forum.xda-developers.com/showthread.php?t=1058649
Ok, I did the pwr vol+ to get into recovery mode,( with the birds, gtablet, tapntap, n, ), I get the recovery image, then it reboots ( with the birds, gtablet, tapntap, n ) and directly to the classic home screen, never going to the actual recovery screen to manipulate the tablet, why is it doing this and what can I do to get it to go to the recovery screen? I can't do CWM, or know if I've loaded CWM on the tablet. I know I've asked alot of questions, and I apologize, but I'm really trying to follow all the instructions give by all of you, and I really do thank you all, but I'm really determined to get this tablet working properly and enjoy the benefits of this tablet and all it has to offer. I'm still getting the same FC message as I've stated at the beginning of my thread. The ROM I think that's on the tablet right now is TnT 3588, still no keyboard, settings, or contacts access. I've even tried starting from scratch, and will probably try it again before someone answers this post. Please don't give up on me guys, I'm determined to get this right just need some coaching from you. Thank you so much for all that you've already done.
duplaine1, it doesn't sound like you've tried installing CWM via nvflash.
http://forum.xda-developers.com/showthread.php?t=1058649
You will need to power on the tablet using POWER and Vol-. Either create a batch file with the command or run the command as in the post. If this doesn't work, based on your original post, you are wanting to do a factory reset, so you can use the following post to flash your tablet to stock ROM
http://forum.xda-developers.com/showthread.php?t=861950
From there you can load CWM and either stay at BL1.1 or upgrade to BL1.2.
Also, when you are doing this make sure you are installing the correct version of CWM to match the ROM you are installing (or have installed). I have 2 Viewsonic G tablets and I discovered the hard way I had to use the file in the nvflash deprecated folder on one of them.
Your recovery is borked. You need to nvflash. Its not hard just read the instructions on Gtablet for dummies.com

[Q] Bricked ASUS MeMo pad M302C, Help..

Hi Guys, 1st post and I'm looking for help..
I have an Asus MeMo pad 10 ME302C, its totally soft bricked.
I was upgrading to 4.3 using WW_ME302C_V5_0_17.zip, all good no problems, then used the .de forums WW_ME302C-V5.0.18-0-ota-user.zip to root it also no problems, I then did the clean up and renamed build.prop when replacing it rather deleting it... Big mistake..
Now the device won't boot, it gets stuck at an ASUS screen with spinning circles. Trying to do factory reset also hangs at the spinning circles.
I've read and attempted many recovery methods described on XDA but am kinda screwed because the USB is not being recognised, seems to be no way to get it recognised so fastboot or ADB is out as I cannot talk to the device.
I do have an option to of SD download though but not sure what I would put on the SD and if I could get it to boot from it and recover that way.
So guys, help a brother out.. How do I recover this, can I put firmware on a SD card and recover this way?
Or is there a way to get the USB to be recognised by a pc, I have tried all drivers I can find and the Google SDK but nothing.
Or is there another avenue / idots giude to unbricking that I haven't found yet (ASUS forced reset?)
Really need help on this..
Cheers
ZBott
ZBott said:
Hi Guys, 1st post and I'm looking for help..
I have an Asus MeMo pad 10 ME302C, its totally soft bricked.
I was upgrading to 4.3 using WW_ME302C_V5_0_17.zip, all good no problems, then used the .de forums WW_ME302C-V5.0.18-0-ota-user.zip to root it also no problems, I then did the clean up and renamed build.prop when replacing it rather deleting it... Big mistake..
Now the device won't boot, it gets stuck at an ASUS screen with spinning circles. Trying to do factory reset also hangs at the spinning circles.
I've read and attempted many recovery methods described on XDA but am kinda screwed because the USB is not being recognised, seems to be no way to get it recognised so fastboot or ADB is out as I cannot talk to the device.
I do have an option to of SD download though but not sure what I would put on the SD and if I could get it to boot from it and recover that way.
So guys, help a brother out.. How do I recover this, can I put firmware on a SD card and recover this way?
Or is there a way to get the USB to be recognised by a pc, I have tried all drivers I can find and the Google SDK but nothing.
Or is there another avenue / idots giude to unbricking that I haven't found yet (ASUS forced reset?)
Really need help on this..
Cheers
ZBott
Click to expand...
Click to collapse
Try this link below. I was stuck for ages but this worked to get mine restored:
forum.xda-developers.com/showthread.php?t=2568724&page=46
Post number 460
Hope it helps.

qsusb_dload problem

Hi.
I'm new here so pardon any error...
someone advised me to post this problem here/ tterox
i was trying to unlock the network using a tutorial i found online.
but after editing the "mmcblk0p4" file the phone shuts down and won't come on. i tried plugging it to pc and it shows a "qhusb_dload" driver window. i tried using linux also and it shows it in qdl mode.
I don't know what to do because i''ve tried so many options adb and fastboot can't detect the phone. any useful information will be appreciated.
thanks.
Sorry to say but most every time that a device gets into Qualcomms download mode you have a brick. There are a few times that people have hit this mode momentarily and got out but I suspect that you were playing with a partition that is needed to boot thus cannot boot.
Usually the only thing to do know is JTAG or return to the factory for RMA
Sorry for the bad news
demkantor said:
Sorry to say but most every time that a device gets into Qualcomms download mode you have a brick. There are a few times that people have hit this mode momentarily and got out but I suspect that you were playing with a partition that is needed to boot thus cannot boot.
Usually the only thing to do know is JTAG or return to the factory for RMA
Sorry for the bad news
Click to expand...
Click to collapse
well, i read in a post that it was possible to push firmware to an android device in that mode...i tried it and i was able to view my partitions but i dont know how to reflash the hboot.

Chainfire 3d bricked my padfone 2 and maybe I f*cked up by factory reset. Please help

So this is my problem.
My friend told me that chainfire 3d probably would prevent lag on my phone when watching HD videos and I installed it without further research. As for many other people that I've read about afterwords my phone got stuck at Asus loop and then went strait to recovery startup screen and I can't seem to get anywere from there. I've tried sooo many different guides and tutorials by now so I finally decided to seek out help here by posting this. In one of my weakest points I desperately tired to do a factory reset but that turned out to wipe my whole phone so all that exists now is an empty folder named "asus_log" in my "/data/media" dir.
This is what I tried so far as I can remember from the top of my head.
Tried getting it going via fastboot but that function doesn't even work at all. (No fastboot available )
Used all adb commands I can find in other guides. I see my device through "adb devices" but when I use the shell command it just give me an error. The same with the "su" command.
Tried to use the "push" command with a stock rom but it just get stuck and doesn't proceed.
Tried using ODIN but that's just for Samsung.
Used android sdk and installed all kind of **** some tutorial proposed.
As I live in Sweden and we don't got any asus stores it would be a pretty expensive thing for me to go to a computer store that is an asus retailer cause they have to ship it to some other country for repair probably.
So I would be sooo happy and grateful if anyone here knows the solution for my problem and would be able to help me, please!!

Android Tablet Stuck Rebooting, Can't Enter Recovery Mode

Greetings xda!
I came across the forum after searching the internet trying to fix my problem. I appreciate the advice in advance!
I have a Gigaset QV830 android tablet. I have had it about a year. or so A few days ago it started unexpectedly crashing/rebooting while browsing facebook and using firefox. It would start right back up until today when it finally got stuck rebooting at the Gigaset start screen. I let it sit for a few hours and nothing happened.
I was able to boot into Recovery mode, and I attempted to wipe the cache partition in hopes that I could reboot the tablet, save my data, and then hard reset. Unfortunately since I did this, I have been stuck in the android bot loading screen for hours now. Since I am a new user I can't post a link to the picture but it is the android bot with his front compartment open and a blue spherical structure spinning and a loading bar moving above it.
Now I cannot enter recovery mode to do a factory reset and my computer won't recognize my tablet. I am stuck and frustrated and am not sure what to do next. I plan on leaving my tablet plugged in over night with the hopes that the android bot loading screen will work itself out but I doubt that will happen.
I didn't do anything to modify my tablet in any way (all factory OS, just installed apps etc).
Any ideas on possible next steps? Disclaimer: I don't know much about android development but am open to learning/trying anything to fix this.
Thanks a lot for your help. :good:
I have tried a few things with no luck. Here is a bit of an update:
I installed Smart Phone Flash Tool, and the necessary drivers. I found two separate copies of my QV830 files to flash the system. I cannot flash my android with either of the system.img files. It gets stuck between 13-15% with the error message: ERROR: S_FT_DOWNLOAD_FAIL (0xFA8). Everything else will flash just fine with no errors (the boot file, logo, recovery etc).
I played around with a few other things. I found that if I tried to format or choose the firmware upgrade option, while they don't run successfully, they do seem to stop the android bot looping screen. After using these options, the tablet is unable to start whatsoever but after downloading the files to the tablet through the Smart Phone Flash Tool (again, all but system.img), I am able to start the tablet up and instead of getting stuck at the android bot screen, I get stuck at the Gigaset screen.
The good news is that I am able to enter system recovery now. The new problem is that when I try to wipe data/factory reset, the tablet gets stuck on the android bot screen and gets stuck saying --Wiping data..., Formatting /data... This once again when I reboot, gets me stuck at the android bot screen with the loading bar.
AHHH!! Ideas? Appreciate it!
EDIT: I also do have another, one of the Gigaset QV830 tablets that is working if that could be of any help to me.
Ok so I know its kind of late, and I'm new here, but I was having the same problem with the same tablet, and I wanted to know if I could follow the same steps that you did to revive your tablet. So could you please give me the QV830 file links so I could figure out how to use the flash tool to bring my tablet back to life? Thanks in advance.?
I did an oof!!!
I made an attempt to flash a ROM on my Quanta Gigaset QV830 tablet. It was the SDK and Fastboot ROM from Magisk Manager. That stupid decision may have soft-bricked my device, thus making it inoperable, yet repairable. I do not have a computer that will be of any help at the moment, as the only laptop I have is an Asus Chromebook C202SA under jurisdiction of a school district using Enterprise Origin, unless, of course, the repair simply involves downloading and unzipping a few files to an SD card.
My Quanta Gigaset QV830 tablet will not be read by a computer via USB, it will not boot into Recovery Mode, or Fastboot Mode, and it will not leave it's state of being in a constant bootloop. Please help me, as I have run out of ideas, and I cannot afford to get it fixed.:crying::crying::crying::crying::crying:

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