Database Info

[Q] Stuck in a reboot loop, please help

I got my Viewsonic GTablet on Friday (2/11/2011). I loved it and had no issues. I downloaded and installed the update from Viewsonic. I visited the Marketplace that's installed on the device and downloaded some apps, mainly games. Today (2/14/2011) I took it to my university and tried to get on the campus WiFi. I had difficulties, so I took it to the IT department on campus to get some help. They took my device, tried to get it on the network and said that my device could not get on the network because their network uses certain "secure credentials" or something like that. As soon as I get my device back from them, every time it boots up I get and error message that says that Dashboard Home has stopped unexpectedly and to try again. I called Viewsonic's Customer Service, and they determined that I was stuck in a reboot loop. I have tried rebooting the kernel more time than I can count, but it doesn't do anything to help.
Has anyone else been able to solve this problem? I would take it back to the store I bought it from (Office Depot) to get an exchange, but they don't have one in stock anywhere close to where I live, and I don't have the box the device came in anymore.
What do you suggest I do?
The device is running the stock OS with the update from Viewsonic. The only apps I have installed are from the marketplace that comes with the device. I have not tampered with the OS or settings. I am also mildly technically challenged, but I am working on educating myself.
I appreciate any and all help. Thanks in advance. I also apologize if this has issue has already been posted and answered.

vafalla,
This doesn't sound like the boot loops I had, but I guess if it doesn't get you to a screen you can work with the result is the same.
If it were me I would get on a PC and go the the Development part of this forum. I think you need to get ClockWorkMod installed. CWM is a replacement "recovery" program that gives you other functionality to restore, communicate, partition drives and a bunch of other things. There are a couple of threads in the Dev section that tell how. You can download CWM v.08 (the older one works!) and put the update.zip file on a microSD card and edit the recovery folder "command" (no .txt or other ending, just command) file in Notepad to load "sdcard2" instead of sdcard. then put the card in the gtab and reboot holding down the Vol+ key down. You'll get a message in the upper left corner of the screen that recovery is loading. After it installs, if it doesn't startup, reboot with the Vol+ key down again and you should be able to get into CWM.
From there, you can find the CWM partition command and change the two partitions to 2048 and 0.
From there, there are a bunch of threads which tell how to load either a stock recovery file to get back to stock -- or how to load VEGAn 5.1 (or now, 5.11).
Hope this helps get you started. I just didn't want you to think your tab is bricked and that all hope is lost!
Rev
P. S. --- Some of the other threads may have better instructions than mine!!!

Thanks so much for the help! I'll get right on it and see what happens.

Plug in your gtab to the power and see if it boots. Could be they ran your battery down.

Bootloop help
If you really want to learn about the gtablet, youtube ehunyadi. he has done over 10 excellent videos and his most recent is how to install CWM and TNT lite 4.2..sounds like only diereence for you is you'd install CWM to microsd.

Messed up the Gtab real bad - I have experience with rooting.

Hey guys, so I rooted my gtab after I got it today (from woot), and went to flash CM7 (after rooting per http://forum.xda-developers.com/showthread.php?t=865245). On boot, it went to the ANDROID text screen, then went blank, and stayed there.
I then tried flashing g-harmony, as well as doing a full wipe. The same thing happened.
So I was getting a little weirded out. I then tried to do a full nvflash, using the G-tablet format then nvflash.
After the G-tablet format, there was some red text on the g-tab that said about some error with a magic file... not sure what that is.
I then booted up, and it got to the stock ROM, then it blue screened(?).
I did another nvflash, and this time after the g-tablet format, I got some red text about a critical error, but it booted up to the stock rom.
Now in the ROM, it shows no SD card, just 1.63GB internal memory...
I tried to root again, and it showed a triangle with a exclamation point in the middle. Now I cant mount the tablet to my PC at all..
What the heck is going on? How can I get it totally back to stock?

cardriverx said:
Hey guys, so I rooted my gtab after I got it today (from woot), and went to flash CM7 (after rooting per http://forum.xda-developers.com/showthread.php?t=865245). On boot, it went to the ANDROID text screen, then went blank, and stayed there.
I then tried flashing g-harmony, as well as doing a full wipe. The same thing happened.
So I was getting a little weirded out. I then tried to do a full nvflash, using the G-tablet format then nvflash.
After the G-tablet format, there was some red text on the g-tab that said about some error with a magic file... not sure what that is.
I then booted up, and it got to the stock ROM, then it blue screened(?).
I did another nvflash, and this time after the g-tablet format, I got some red text about a critical error, but it booted up to the stock rom.
Now in the ROM, it shows no SD card, just 1.63GB internal memory...
I tried to root again, and it showed a triangle with a exclamation point in the middle. Now I cant mount the tablet to my PC at all..
What the heck is going on? How can I get it totally back to stock?
Click to expand...
Click to collapse
Put it in the box and send it back stating defect. I read your statement and there's were so many foreign things going on I couldn't keep up. Wow sounds like it's beyond something you did or could do. The question is do you want to continue on? The longer you keep something that could of or well may have been defective before your rooting experiment the better chance of you eating the cost. Your decision. I wish you the best for remedy.

did you try the repartitioning fix.
absolutely no idea if it will make any difference but at this point can't help.
http://forum.xda-developers.com/showthread.php?t=896395

Nvflash doesn't wipe the bct so user junk might still affect. Check the partition tool above or the gtablet format tool in development before that. But honestly I got a bad tablet too. It was so prone to bootlooping. Just exchange it.

So I tried the G-Tablet format again, and got the error for the "magic values" again. I have no clue what that means.
I tried to install CM7 again, and it boots to the ANDROID text, then the little android flys by the screen, then it goes blank... nothing.
Ugh.. calling viewsonic now.

So I searched for "magic number"
Found this
http://forum.xda-developers.com/showthread.php?t=925504&highlight=magic+number
Hope that helps.

sleebus.jones said:
So I searched for "magic number"
Found this
http://forum.xda-developers.com/showthread.php?t=925504&highlight=magic+number
Hope that helps.
Click to expand...
Click to collapse
Magic Value Mismatch is likely caused by a corrupted zip download.
So when you flash that corrupted file it may complete succesfully but the end result isn't as good.
Sometimes even though the download may have comepleted it may still be corrupt.
What might help is downloading the zip file again from the source location and using that one instead of the original download.
Also, what may help (if you have access to recovery mode) is to flash
Calkulins Format all.zip file before you flash another rom.
This format all zip will wipe everything the standard Data & Cache wipe will not.

Thanks sleebus and tek, using the fix from that thread might help. But.. I ended up contacting Woot and they are going to do an exchange, no hassle. So Ill just get a fresh one.
When I get the new Gtab, ill re download everything and try rooting/ROM flashing again. Hopefully I won't have any problems with it!
Thanks guys, very helpful as always.

[Q] Need help with rooting 3g (have read the how to)

Hey guys I really need your help, my phone has been down for the past 3 days now. I followed this guide:http://forum.xda-developers.com/showthread.php?t=547133&page=2. I will state that I am new to the forum so I cannot post on the actual how to, due to rules, or I would have. Basically i have made it all the way thru the guide, to the point where it tells me to:
- press MENU to power off! (do not reboot)
- hold HOME and POWER to boot into recovery mode
- apply update
once I reach there I have no way of resetting the phone so I just pulled battery after it said the cyanogenmod was installed from sdcard. I flashed the splash.nb, but now all that happens is my phone loads up the MyTouch 3g screen freezes for a few min then restarts and goes back into Android System Recovery screen. I really need your help and would be forever great-full if someone could lend me a hand. I will check back regularly.
Thank you very much ahead of time for whoever lends me a hand.
Troubled Guy With Non Working Phone

OP here
Come on guys someone has to have had this problem before. Even if you are sending me to another link who has dealt with this before it will still be a help.

First of all, I'm not familiar with your phone. But I will try to give you a few ideas and see if any of it works for you.
If you have a recovery installed and you have flashed Cyanogenmod, then you are rooted. I'm not sure how your recovery works, but you should have to use the volume buttons & power button to navigate recovery - or something similar. If you can get into recovery, you should be fine.
Go to the wipe menu and wipe cache/dalvik cache. If these weren't wiped properly before flashing, this could be the culprit. There should be an option to reboot, you may have to choose go back a couple times to find it. If that doesn't work, try flashing a different rom. You'll need to wipe everything in recovery (except the SD card) first, then choose "flash zip from SD card".
If your battery is almost dead, don't try flashing anything, just wipe. You'll need to get an external charger or a full battery before flashing anything.
Again, I don't know how your phone works, I have an Evo & pretty much just treated your post as such. It's a start, though. If you can give me more info, I can try to help further.

I also just noticed this is an old method for an old version of the phone. You do have the phone this was made for, correct? Have you tried sending a pm to the OP?
There is most likely an easier, newer way to root, but what's done is done. It also seems like it may be using Amon Ra recovery? If that's the case, that's the recovery I use so I can help you out there. You may also want to look at how to unroot and get your phone back to stock, then start over. I'm going in to work, but if you post back I'll try to help you out as soon as I get the chance.

[Q] TF700T started by itself got supper hot now stuck on boot screen.

I have a Asus TF700T and while it was in my car in its case it apparently started on it's own and ran down a full charge to about 10% so it must have been going for hours which would explain why it got so warm. I could not shut it off so it stayed on until there was no more charge. I was then able to charge it. When I hit the start button it starts but just hangs up in the animated boot screen and goes no further. Then I tried the on button with the volume button and got into TWRP. I really don't know anything about TWRP but I looked around and tried rebooting and a few other options but nothing changed. Still stuck on the boot up screen.
So I'm willing to learn about my tablet now that I am forced too. Can anyone please point me to the right solutions and can anyone tell me why it started on its own? You help is much appreciated. Thanks.

More likely some app never shut down and got hung up, running the battery down. Unless you live in Phoenix and had in your car in full sun heating it up to 140 F...
To give you any advice worth a damn you need to provide:
bootloader version
TWRP version
what rom you are running
In lieu of that, and to possibly get the tab out of the stuck boot, you could just do a factory wipe in TWRP.
Choose the Wipe option and swipe the button - let it finish and reboot system. That will wipe all user installed apps and settings, but leave your personal files untouched.
Let us know where that got you.
For general info and to get your PC set up for fastboot/adb you could peruse my guide here: http://forum.xda-developers.com/showthread.php?t=2688891

Thanks for the info. I will charge it back up and try your wipe suggestion.
As far as the other info you need, I'm not sure how I can get that if it won't boot, except probably the TWRP version. Can you suggest a way to obtain that info. As far as what Android version I was using I'm not really sure about that either. I bought this used in early 2013 and the version was whatever was around back then. Geez, I'm a little embassased. It's my most important tool and I know nothing about it. It's as if you asked me my sons name, age, and birthdate and I couldn't tell you. Back when I used a desktop, I knew everything about it but now, shame on me.

The TWRP version would help somewhat. Assuming you have a TWRP version compatible with your bootloader it would give us a hint on what you were running. But if you can boot to the bootloader with Power and Volume Down, just read the tiny script. Your BL version is right there.
But if TWRP is still working you could use it's build-in file manager to copy all your data off internal storage to a microSD.
Then download the latest firmware from Asus, unzip the file once, resulting in another zip and place that zip on a fat32 formatted microSD.
Flash the firmware in TWRP.
That would get you onto the latest bootloader, but would also install the stock recovery and rom.
Next just decide which custom rom you want to run, find the correct TWRP version, flash it in fastboot and then flash the rom.

Who would of thought that a menu option called "Wipe" would get me back up and running? Seems to me that Wipe would just blow away everything. You assistence is greatly appreciated.

Fogot to mention that I,m also going to follow your suggestions with the lastest firmware and custom rom but I have to put that is on hold until I have a backup tablet so I can continue doing my Ebay work and learning more on this terrific website. Thanks again for your help.

[Q] I can't fastboot my Nexus and I ran into "/unable to mount data"

While rooting my nexus my phone went into a TWRP loop of "/unable to mount data". I went to browse around online to look for a solution. This link suggested I install clockwork mod which I did. This made my phone somehow unable to be recognized by my computer. I spend the next 3 hours uninstalling drivers and reinstalling them (SDK included) and nothing works. My computer refuses to acknowledge my phone anymore. My phone claims on bootloader screen that it is still unlocked, and so I have hope for some sort of solution. I looked at a few other methods like the "LG flash tool" but my phone wouldn't go into download mode. I am able to wipe the cache but I can't wipe my data because supposedly it cannot be mounted. I am not sure if I can flash anything at all, clockwork can work but how do I get any files on my phone without bootloader? My phone is on marshmallow and I am not in an economically sound position to buy a new phone. I can provide pictures of my situation if that helps at all.
Any suggestions?