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[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.

Need help after bricking my UK WIFI Xoom

Following various threads here how to successfully unlocking and rooting their device, I've failed on so many levels.
At the moment I think my xoom is semi-bricked because its just stuck on the M screen. I've think I got the recovery screen working last night as I was able to go into recover mode but after updates through wifi I think it possibly stopped it.
So when i reboot and go into recovery mode, I get an exclamation mark over an android. I've tried rebooting and just got it to mount back on Fastboot but when I've tried to wipe it and reflesh it to (recovery-Tiamat-R4c-100611-1150-cwm.img) its not doing what its suppose to do and giving me "unknown partition, Failed to process command error (0x300003)
Any ideas what I need to do?
Btw, I can reboot, voldown and then volup to choose the 3 options but like I said I can't get into the recovery mode properly.

Schizophonic said:
Following various threads here how to successfully unlocking and rooting their device, I've failed on so many levels.
At the moment I think my xoom is semi-bricked because its just stuck on the M screen. I've think I got the recovery screen working last night as I was able to go into recover mode but after updates through wifi I think it possibly stopped it.
So when i reboot and go into recovery mode, I get an exclamation mark over an android. I've tried rebooting and just got it to mount back on Fastboot but when I've tried to wipe it and reflesh it to (recovery-Tiamat-R4c-100611-1150-cwm.img) its not doing what its suppose to do and giving me "unknown partition, Failed to process command error (0x300003)
Any ideas what I need to do?
Btw, I can reboot, voldown and then volup to choose the 3 options but like I said I can't get into the recovery mode properly.
Click to expand...
Click to collapse
Could I ask what steps in rooting you completed successfully and where exactly it went wrong?
Then, what exactly have you done to try to move forward?
Also, which guide did you use?
Don't worry, you're not bricked if you can get to fastboot.

okantomi said:
Could I ask what steps in rooting you completed successfully and where exactly it went wrong?
Then, what exactly have you done to try to move forward?
Also, which guide did you use?
Don't worry, you're not bricked if you can get to fastboot.
Click to expand...
Click to collapse
Last night I followed this videolinked in http://www.youtube.com/watch?v=OYc1lVWm7ks to Unlock OEM my device
I think that worked fine because it didn't throw up any hiccups.
I then followed this http://forum.xda-developers.com/showthread.php?t=1242241 to root it. It didn't have superuser so I downloaded it and installed it and then tried Terminal on the "SU" command. Said I did not have 'permissions'
This morning, I then followed this Youtbue link http://www.youtube.com/watch?v=ZsVpY0PDwtQ and after the first reboot of puting the new .img, it failed to reboot. Now I'm stuck on the M screen.
I think I managed to get my computer to pick up the device in adb fastboot because it responds to that. However when I type in adb devices it doesn't pick up anything...
Next after messing around I managed to flash it to the boot.img on this, http://forum.xda-developers.com/showthread.php?t=1049901
It flashed it ( I think) and worked without errors unlike the other flash I tried today, and its still stuck in M screen.
BTW, this is a UK Wifi Zoom.

Little update - I've downloaded and flash this boot: boot_3.1_insecure.zip from http://forum.xda-developers.com/showthread.php?t=1049901 and now boots up. However my Wifi has now disappeared. I'm in the process of doing a factory reset but will this work?
Still no avail - need to get this wifi working again soon. Think I've finally got access to superuser

Schizophonic said:
Little update - I've downloaded and flash this boot: boot_3.1_insecure.zip from http://forum.xda-developers.com/showthread.php?t=1049901 and now boots up. However my Wifi has now disappeared. I'm in the process of doing a factory reset but will this work?
Still no avail - need to get this wifi working again soon. Think I've finally got access to superuser
Click to expand...
Click to collapse
It sounds like you are on the right track. Hang in there, you'll make it!

Do you have access to an Ubuntu OS? when you connect an android device to a PC running Ubuntu it will mount the internal memory to the PC which makes it much easier to browse the partitions. Also, Go ahead and reflash the CWM recovery through Rom manager (if thats available to UK users) so that hopefully youll get a fresh recovery.img to work with. As far as ADB not noticing the xoom, you probably erased the adb drivers, and is the usb cord youre using 100% data transferable type? I about pulled my hair out a few times because adb wouldnt recognize my phone but realised I was using an older micro usb cable that only allowed electrical current for charging, not data transfer capable. You might also be able to find a clean nandroid backup file from a fellow UK xoom owner, that you trust, and see if they dont mind sending you their backed up boot-img and system-img. Just some guesses, but sounds like you got it pretty well figured out

Hello all, after a bit of self taught ADB and etc and understanding the mechanics how to successfully flash a Xoom, I managed to follow another guide from stratch (unlock oem, etc) and flashes it to the US stock 3.2.2 rom. It picked up wifi but couldn't connect for some reason - maybe different frequency?
Anyway since then I've installed one of the custom Roms here Team Tiamat Xoom Rom 2.2.2 and all is well now Got my Xoom back up and running with superaccess.
Thanks for all the info on this forum, great place for resource
Mind you, coming from a background with no experience with ADB, it was a bit mind boggling but I managed to get there in the end. Just a bit of feedback for those authors with the guides - maybe put a little subsection on the basics of how to get things prepared and up and running. This I think will help a lot of people who cannot sit for hours on end to trouble shoot something if it goes wrong. Most of the guides here are very useful and handy but at time I just kept saying to myself "wtf, what, where, huh?"

Schizophonic said:
Hello all, after a bit of self taught ADB and etc and understanding the mechanics how to successfully flash a Xoom, I managed to follow another guide from stratch (unlock oem, etc) and flashes it to the US stock 3.2.2 rom. It picked up wifi but couldn't connect for some reason - maybe different frequency?
Anyway since then I've installed one of the custom Roms here Team Tiamat Xoom Rom 2.2.2 and all is well now Got my Xoom back up and running with superaccess.
Thanks for all the info on this forum, great place for resource
Mind you, coming from a background with no experience with ADB, it was a bit mind boggling but I managed to get there in the end. Just a bit of feedback for those authors with the guides - maybe put a little subsection on the basics of how to get things prepared and up and running. This I think will help a lot of people who cannot sit for hours on end to trouble shoot something if it goes wrong. Most of the guides here are very useful and handy but at time I just kept saying to myself "wtf, what, where, huh?"
Click to expand...
Click to collapse
My guide, which is highlighted in the Xoom Heaven thread has a large section on setting up your adb files etc.
http://forum.xda-developers.com/showthread.php?t=1249798

Rooted 3.2 Xoom FAIL
Hi All,
Not the best way to join the boards but I am in deep....
I have a canadian wifi xoom on 3.2. I followed these instructions (How to root 3.2 on US WiFi & Verizon 3G XOOM! (Windows and Mac)) to root my xoom and was having issues with a wifi error.
I decided to use the Canadian boot.img file and when I rebooted the xoom got stuck on the moto logo and is no longer recognized by my computer.
I have tried resetting through the android recovery (I dont have anything 3rd party installed) but no luck. I am afraid that this thing is a total write off.
Any thoughts? Thanks
Blair

[Q] Having problems when trying to ROOT Moto G LTE x1040

Hi, I'm relatively new to this forum and I've been trying almost all day to root my phone...
First, I had problems trying to get a working recovery (they just crashed to random colors/or loaded fine and then rebooted like nothing happened). Tried with CWM Recovery but it seems this model is not supported atm, tried with TWRP v2.8.3.0 and also crashes... ATM the only custom recovery that has started without going haywire is TWRP v2.8.0.0 (at least for my phone).
I prefered using 'fastboot boot recovery.img' before 'flash' since it's the first time I'm trying to root a phone. The recovery mode starts okay and I also placed the UPDATE-SuperSU-v2.46.zip in the internal storage before hand. I try to install the .zip file and all goes well, no errors and a blue 'Successful' message. This is where the 'root' procedure fails. Since you can reboot or go home to check other stuff I just tried rebooting the first time and it asked me that I had a SuperSU in the device and that if I wanted to install it to have root. I obviously swiped to install it and it displayed for a split of a second the window from before and just shut down and rebooted...
I tried several other methods to try and root my phone after this failure, but none worked. I checked again if trying this procedure would serve a purpose but I got the same thing always. But since I saw the process so many times I could see for a moment a red line saying something like 'E: failed to copy su binary to /system/bin (...)' but couldn't read more because it was a split of a second there xD. I googled this weird error and I found that my /system is in read only state and not writtable... But to change it to writtable I need root too it seems <_<)
So, any help? I'm sorry if this long text makes someone just look away but I don't really know how to explain my problem in more simple words xD. Any help will be appreciated .
EDIT: Forgot to say that my phone has its bootloader unlocked already and it has USB Debugging enabled.
Moto G LTE x1040
System version (as my phone says) 21.31.1.peregrine.retla.retla.en.01 entcl
Build: KXB21.14-L1.56-1
OS: KitKat 4.4.4

Please help
Bump.

Bump.

Questions about 1st time root SM-J700P w/7.1.1

Hello. I've never bothered trying to root a phone before, but getting tired of the forceware apps being a buggy PITA you can't even disable/remove, so thought it was time to root for more control.
However, there are so many old posts, old tut videos, updates to software that might be superseded by newer software by the time you get to the last page, etc. that I'm not actually sure what's what or where to start, so figured I'd ask and hopefully get accurate info from you guys/gals that are more in the loop on the most current methods using the latest software.
Phone in question seems to be a 2015 J700PVPU2BQJ2 software version w/ J700P.03 version hardware updated to 7.1.1 and it's through Virgin. I ONLY want to root the phone, and nothing more, while trying to keep the phone as close to factory image as possible., and prefer using a PC to do it. Thought Auto-Root might be way, but it looks like it's not in use anymore?
Again, I'm new to phone rooting and the lingo, so treat me with kid gloves, thank you.

J727P
Nupid Stoob said:
Hello. I've never bothered trying to root a phone before, but getting tired of the forceware apps being a buggy PITA you can't even disable/remove, so thought it was time to root for more control.
However, there are so many old posts, old tut videos, updates to software that might be superseded by newer software by the time you get to the last page, etc. that I'm not actually sure what's what or where to start, so figured I'd ask and hopefully get accurate info from you guys/gals that are more in the loop on the most current methods using the latest software.
Phone in question seems to be a 2015 J700PVPU2BQJ2 software version w/ J700P.03 version hardware updated to 7.1.1 and it's through Virgin. I ONLY want to root the phone, and nothing more, while trying to keep the phone as close to factory image as possible., and prefer using a PC to do it. Thought Auto-Root might be way, but it looks like it's not in use anymore?
Again, I'm new to phone rooting and the lingo, so treat me with kid gloves, thank you.
Click to expand...
Click to collapse
ok you have an older phone the J700P you can start by downloading odin an twrp recovery an superSU zip you can get twrp from here !https://twrp.me/devices/samsunggalaxyj72015qcomsprint.html
an odin from here
https://mega.nz/#!nYVDXBAC!_cTWbW4_Ow8sZMWcZvO7bVwEEBFlD1DQsB5NeFhj1EY
An just google latest superSU zip to find that !
good luck !
step 1 enable oem in development settings !
step 2 put phone into download mod an flash twrp then boot into twrp recovery an flash superSU zip !

Thank you for the info. I'm presently confused. Here's what I've done:
I ran Odin and flashed with twrp-3.2.1-0-j7ltespr.img.tar. It went through successfully going off odin's message.
Vol. up + home + power. It'll eventually show a yellow triangle with the white trash can guy on it's side stating "No Command". Power + up gets the Android Recovery screen.
At this point, am I supposed to choose the Wipe Data/factory reset option? I see tuts that seem suggest I should already be in the twrp UI or something. I've tried watching vids and looking at a handful of tuts, but either they are the wrong phone, too old, the button combos show something else entirely, etc.
Thanks!

Anyone? Videos show the buttons vol. up + home + power as booting right into twrp recovery gui. For me, it's going into "Android Recovery" screen. Is there an extra step with Odin or something that I missed? Or am I supposed to wipe/boot in the Android Recovery screen and it'll boot the twrp recovery gui? If bricking something I'm not familiar with wasn't a concern, I'd be courageous with it.

I tried the twrp-3.1.1-2-j7ltespr.img.tar and same thing. Odin says it's a success. Phone boots up to normal phone screen. Videos show the person's phone booting right into Twrp recovery. Mine acts like nothing changed. Root checker says unrooted. The Twrp app says unrooted. OEM Unlock and Debugging options in phone are selected, and I have it set for manual updates.
Anyone have an idea what's going on here?

J700P
Nupid Stoob said:
I tried the twrp-3.1.1-2-j7ltespr.img.tar and same thing. Odin says it's a success. Phone boots up to normal phone screen. Videos show the person's phone booting right into Twrp recovery. Mine acts like nothing changed. Root checker says unrooted. The Twrp app says unrooted. OEM Unlock and Debugging options in phone are selected, and I have it set for manual updates.
Anyone have an idea what's going on here?
Click to expand...
Click to collapse
Ok when flashing twrp with Odin first uncheck auto reboot in options flash twrp pull battery replace battery an boot into twrp an flash superSU zip then reboot system !

Thank you so much Peter! That did the trick THANK YOU :good:
For posterity to anyone else w/limited root knowledge with a SM-J700P Virgin variant running 7.1.1 (and what was most recent factory updates until this point); Flashed the twrp-3.2.1-0-j7ltespr.img.tar again w/o auto reboot in options of Odin, pulled battery once safe (i.e. you get the "Pass" message from Odin confirming everything went as planned) to get out of the downloading screen, replaced battery, booted the recovery (vol up + power + home) and it finally booted into the twrp recovery gui. Selected the "Install" option, then went to where the supersu.zip was stored on the SD (I created a separate "supersu" folder via PC connection for easy locating; internal phone memory card looks to now be unlocked, so can most likely use that if you don't have a SD card). Checked the "reboot once installed option" in the gui box and swiped to install supersu,zip and verified it was rooted via app after phone fully booted back up.
BTW, If anyone gets a hang/crash in Odin immediately after trying to select a twrp tar image in the "AP" box, try downloading the twrp image via PC instead of the through the phone (the legit twrp site that has the repository of past/current .tar), and just put it somewhere like Odin folder on desktop. Somehow, mine were getting corrupted via phone download through the twrp app, and Odin would NOT recognize the file was bad/corrupt when trying to select it via the AP box and hangs instead of giving a warning message. I ran into this earlier on then noticed the file was too small for some reason after viewing it on my PC, hence the Odin hang that needed a task manager kill.

I hate to necro an old thread but I still do not want to create an entire new topic for a single question. If I was to follow this info will it wipe the phone or will it simply root it while keeping all data on the phone? I ask as it is my wife's old phone and she would be pissed if I wiped her apps and everything on accident since she wont be able to remember what she had.
Edit: also when I add the TWRP file to odin it immediately hang/crashes like OP mentions but I am already DLing via pc. any thoughts?

I made a goof rooting my phone, please help

So, I followed all the basic instructions of getting ADB, downloading and flashing twrp, and my goal was solely to root my phone so I went ahead and got SuperSU as well and installed it through twrp. Everything went fine until I went to reboot my phone and it wouldn't work, it would only boot into twrp no matter what I did. In a moment of foolishness, I decided to go to the reset section of twerp, and switched to partition A (it was on partition B, where everything had been installed). Now my phone only has a black screen, and no amount of trying to soft reset or anything is turning it on. The only indication I have that my phone is doing anything, is that when I plug it in to my pc I can hear the connection sound. I can't access any files on the phone, and ADB doesn't recognize that the phone is plugged in. It's a Moto g7 power phone, and I used the latest versions of the programs. Also, I did do something of a ****ty backup before I started the process, but since my phone wasn't rooted I don't know how much that'll help me. All the stuff I find online says to just install a stock rom or whatever; but I can't even access my phone to do that. Is there ANYTHING I can do or am I ****ed?
Thanks so much for any and all help

Zacigator said:
So, I followed all the basic instructions of getting ADB, downloading and flashing twrp, and my goal was solely to root my phone so I went ahead and got SuperSU as well and installed it through twrp. Everything went fine until I went to reboot my phone and it wouldn't work, it would only boot into twrp no matter what I did. In a moment of foolishness, I decided to go to the reset section of twerp, and switched to partition A (it was on partition B, where everything had been installed). Now my phone only has a black screen, and no amount of trying to soft reset or anything is turning it on. The only indication I have that my phone is doing anything, is that when I plug it in to my pc I can hear the connection sound. I can't access any files on the phone, and ADB doesn't recognize that the phone is plugged in. It's a Moto g7 power phone, and I used the latest versions of the programs. Also, I did do something of a ****ty backup before I started the process, but since my phone wasn't rooted I don't know how much that'll help me. All the stuff I find online says to just install a stock rom or whatever; but I can't even access my phone to do that. Is there ANYTHING I can do or am I ****ed?
Thanks so much for any and all help
Click to expand...
Click to collapse
U are in edl mode u need to search for blank flash it should get u back up and running

Zacigator said:
So, I followed all the basic instructions of getting ADB, downloading and flashing twrp, and my goal was solely to root my phone so I went ahead and got SuperSU as well and installed it through twrp. Everything went fine until I went to reboot my phone and it wouldn't work, it would only boot into twrp no matter what I did. In a moment of foolishness, I decided to go to the reset section of twerp, and switched to partition A (it was on partition B, where everything had been installed). Now my phone only has a black screen, and no amount of trying to soft reset or anything is turning it on. The only indication I have that my phone is doing anything, is that when I plug it in to my pc I can hear the connection sound. I can't access any files on the phone, and ADB doesn't recognize that the phone is plugged in. It's a Moto g7 power phone, and I used the latest versions of the programs. Also, I did do something of a ****ty backup before I started the process, but since my phone wasn't rooted I don't know how much that'll help me. All the stuff I find online says to just install a stock rom or whatever; but I can't even access my phone to do that. Is there ANYTHING I can do or am I ****ed?
Thanks so much for any and all help
Click to expand...
Click to collapse
Did you get it running