Finally!The real fastboot mode! - Dell Venue

Turn mute button on, and press power and vol down. Then you can see a single line stating "fastbook mode".
OK, Let the Custom ROM buidling begins!

The bad news is, it does not expose a bootloader device to the OS and I had my phone bricked when trying to find some more within the engineering menu.

Guessed you have hit the 11th commandment ;-p
"Ye shalt not mess with your Venue".....

You just need to add the correct driver information to existing google fastboot drivers to get it to work. Hope it works for you guys to load custom roms. Haven't tried anything with it yet.
http://www.megaupload.com/?d=GCSXF6FP

Related

[Q] Boot Loop on LE I/O 10.1 need help!

Hey Guys, could sure use your help... i updated my 10.1 le yesterday and that went thru fine. Later on i was playing and watching youtube and it sent my tablet into a boot loop and i cant seem to fix it. any help would be appreciated thanks in advance.
Mine did the same thing when i was streaming music. Not even Odin brought it back. I used adb to reboot into stock 3e recovery and wipe data/factory reset it, then used Odin to grt back to 3.0.1. Then i just redownloaded the 3.1 update. Hope that helps
LovellKid said:
Mine did the same thing when i was streaming music. Not even Odin brought it back. I used adb to reboot into stock 3e recovery and wipe data/factory reset it, then used Odin to grt back to 3.0.1. Then i just redownloaded the 3.1 update. Hope that helps
Click to expand...
Click to collapse
right now im having problems with adb listing the devices. adb is installed. it keeps saying that i need some APX drivers???
Drivers are here:
http://www.samsung.com/us/support/owners/product/GT-P7510UWYXAR
I had the same problem. This is what i did. Since I had already rooted my tablet, I already had in my laptop ADB and the driver for the tablet. If you don't have these 2 things, I suggest you go to the development section of this forum, look for the insrltructions on how to root, and download what you need.
I connected my tablet then went into cmd mode (DOS MODE), then typed adb reboot recovery. From there the tablet rebooted into recovery. I then wiped data and cache. Then I rebooted and it went fine, no more bootloop. In settings I noticed that it had reverted back to 3.0.1 so I just did update again. Since then my tablet has been smooth as butter.
Sent from my GT-P7510 using XDA Premium App
For those not too comfortable with ADB, I just installed PDAnet (for the fastboot drivers) and after booting to fastboot (holding power and the volume down button and selecting the USB symbol) I used the "fastboot -w" command in CMD.exe to wipe the device.
Its rather strange that a lot of people are having problems. Mine started after getting an error turning on the WIFI chip. Thank god for Titanium Backup's option to sync with Dropbox. Hope this helps.
kdietze3 said:
For those not too comfortable with ADB, I just installed PDAnet (for the fastboot drivers) and after booting to fastboot (holding power and the volume down button and selecting the USB symbol) I used the "fastboot -w" command in CMD.exe to wipe the device.
Its rather strange that a lot of people are having problems. Mine started after getting an error turning on the WIFI chip. Thank god for Titanium Backup's option to sync with Dropbox. Hope this helps.
Click to expand...
Click to collapse
THANK YOU!! Your suggestion of installing PDAnet saved me! I was having a hell of a time trying to get the right drivers so my computer would recognize the tablet has an adb device. After installing PDAnet, it was a cinch. Then I reflashed everything, wiped userdata and cache, and rebooted (I followed the instructions found here: http://forum.xda-developers.com/showpost.php?p=14600617&postcount=111) Now my tab is working again and I was getting ready to ship it off to Samsung so they could re-flash it for me.
Follow this steps
The steps are this:
http://forum.xda-developers.com/showpost.php?p=15084897&postcount=123
Obviously I have installed adroid-sdk and download fastboot from HTC page.
I'm one of the lucky ones who has had their I/O tab stuck in a boot loop on 3.1, and after trying the steps below, I am not getting it to work. I know I must be making a stupid mistake somewhere along the line, but essentially,
I downloaded the new image, boot, and recovery files into a directory on my hard drive;
I installed PDAnet;
I entered into fastboot on my GTab and plugged it into my PC;
I can tell that fastboot is now listed as a device (I suspect this means that the drivers are installed correctly and that it is recognizing a fastboot device);
Now when I try to run the fastboot commands suggested, I get 'fastboot' is not recognized as an internal or external command...
Stupid question, but I am supposed to run this command from cmd.exe, right? Any ideas what I am doing wrong so that the fastboot commands are not recognizable? I may need a dumbed down instruction set if there are steps I am missing somewhere...
engljeff said:
I'm one of the lucky ones who has had their I/O tab stuck in a boot loop on 3.1, and after trying the steps below, I am not getting it to work. I know I must be making a stupid mistake somewhere along the line, but essentially,
I downloaded the new image, boot, and recovery files into a directory on my hard drive;
I installed PDAnet;
I entered into fastboot on my GTab and plugged it into my PC;
I can tell that fastboot is now listed as a device (I suspect this means that the drivers are installed correctly and that it is recognizing a fastboot device);
Now when I try to run the fastboot commands suggested, I get 'fastboot' is not recognized as an internal or external command...
Stupid question, but I am supposed to run this command from cmd.exe, right? Any ideas what I am doing wrong so that the fastboot commands are not recognizable? I may need a dumbed down instruction set if there are steps I am missing somewhere...
Click to expand...
Click to collapse
Edit:
After trying just about everything, I have concluded there are two hurdles I still cannot pass. First, if I fastboot my device, and select the USB icon, my device is appearing in my windows device list. However, I cannot run any fastboot commands in cmd.exe window. Not sure why or what else is needed. Second, I successfully installed SDK and tried to enter recovery mode through ADB, but I cannot find the magic trick to have my device appear in ADB. ODINing back to stock did not make a difference. If I can get past either of these hurdles I am confident I can progress, so any suggestions are appreciated.
fastboot commands never seem to work for me. Always says waiting for device.
ericc191 said:
fastboot commands never seem to work for me. Always says waiting for device.
Click to expand...
Click to collapse
Which makes me wonder if I am doing something wrong. I can't even get fastbook command to be recognized. It's as if there is some fastboot software needed so that my pc knows what to do when I type fastboot. I hoped SDK was enough, took a stab with a fastboot.exe from htc I found on another forum, neither worked. How did you get your pc to look for your device from fastboot in the first place?
Sent from my SGH-T959 using XDA App
Hi .. I have the same problems before
I found out that the new ADB has moved the directory to "platform-tools"
This renders the fastboot useless "winapiadb.dll"(or something) file not found pop up window
I got that ridiculous bootloop issue right in the middle of the flight! thought I bought a $$$ junk lol
use the fastboot -w option to recover .. but it resets the whole tablet back to OE (original everything)
Hey guys,
So I have one of the Limited Edition Google IO Galaxy Tab 10.1's and I can't find a more updated thread than this. It seems this problem is isolated or mostly isolated to the Limited Edition tabs?
Anyways, I've read through the thread (as well as many other resources) and I just don't understand what I'm supposed to do to defeat the boot loop problem.
For me, pressing the Power and Volume up button (or Power and Volume down button) doesn't do a thing. The tablet does not respond at all. The only thing other than the boot loop is that I can get it into "upload mode" whatever that is.
This thread doesn't mention upload mode, so I don't know how to proceed. I can't seem to find anything in the manual about this sort of hard reset, nor can I find any information anywhere else.
Also, I've read this thread, and I do not have any familiarity with what the following software projects are: Odin, PDAnet, and APX Drivers. I also have not used the android SDK.
Also, in the third post chris eckman posted a link to some sort of Galaxy Tab drivers on samsung's site, which is now a broken link.
Anyways, while I'm a noob to the XDA community, I am a computer engineer, and I'm confident I won't have any trouble recovering this device. There's just so much conflicting information and alternatives methods that I'm not sure how to proceed.
It seems like a tutorial might exist out there that I have not yet found?
Please use the Q&A Forum for questions Thanks
Moving to Q&A
Clyde_Frog said:
Hey guys,
So I have one of the Limited Edition Google IO Galaxy Tab 10.1's and I can't find a more updated thread than this. It seems this problem is isolated or mostly isolated to the Limited Edition tabs?
Anyways, I've read through the thread (as well as many other resources) and I just don't understand what I'm supposed to do to defeat the boot loop problem.
For me, pressing the Power and Volume up button (or Power and Volume down button) doesn't do a thing. The tablet does not respond at all. The only thing other than the boot loop is that I can get it into "upload mode" whatever that is.
This thread doesn't mention upload mode, so I don't know how to proceed. I can't seem to find anything in the manual about this sort of hard reset, nor can I find any information anywhere else.
Also, I've read this thread, and I do not have any familiarity with what the following software projects are: Odin, PDAnet, and APX Drivers. I also have not used the android SDK.
Also, in the third post chris eckman posted a link to some sort of Galaxy Tab drivers on samsung's site, which is now a broken link.
Anyways, while I'm a noob to the XDA community, I am a computer engineer, and I'm confident I won't have any trouble recovering this device. There's just so much conflicting information and alternatives methods that I'm not sure how to proceed.
It seems like a tutorial might exist out there that I have not yet found?
Click to expand...
Click to collapse
Ok, well if you are running a "stock" IO bootloader, then you should have fastboot and download modes accessible to you by using the volume down and power button combo.
Have you ever gotten to this menu before? If not, then you just aren't doing it right. Let go of the power button part of this combo once the samsung logo appears, and then you should see two icons appear. If you have an IO bootloader, then you are going to go into fastboot mode, and then use fastboot to get your recovery booted. Once you get CWM booted, you can flash a stock ROM, load up stock recovery and wipe this sucker back to factory, and then fastboot your CWM recovery and install Task650's latest rom and be bootloop free. Let me know if you need further help.
Alright, first things first. Yes, this tablet is 100% stock, and I've done one major Android update, but it was not the one that broke everyone's wireless.
----------
So going step by step:
you should have fastboot and download modes accessible to you by using the volume down and power button combo. Have you ever gotten to this menu before?
So, I did once get to what I believe was the "fastboot" menu. I had four options available to me, the first one was something like "repair boot process" which I selected, because I was having a boot problem. It did nothing, and now I cannot get back to that menu.
I did get to the USB upload screen once by accident, when I was trying to get back to the boot menu, but not knowing what to do at that point. I had to shut it off.
Let go of the power button part of this combo once the samsung logo appears, and then you should see two icons appear.
Which Samsung logo? If I press both the power button and volume up or down, I get nothing. Nothing happens. If I press the power button first and then two seconds later start holding down the volume button, then eventually I get the blue swirly samsung screen. At the end of that, the samsung logo is clear. But waiting a bit longer, after about 30 seconds of blank screen, a pulsing white Samsung logo comes up, and I've never known which samsung logo to stop holding the power button. I believe I've tried every combination imaginable, and none of them work.
If you have an IO bootloader Do you mean Google I/O Stock bootloader? If not, I have no idea what this is in reference to.
Once you get CWM booted No idea what that is.
you can flash a stock ROM Where do I get that?
-------------
My bootloop might be different from everyone else's. Everyone else says "shut off the device, and then turn it on with the volume down/up held down. The problem with mine is that it NEVER shuts off! So, I can only do about 2 tests per day, because the only way I can shut it off is to let the battery run dead.
Mine switches from boot loop, and if I force that off, by holding down the power button for 10-15 seconds, then it immediately boots back up into "going into upload mode, cause unknown" If I force that screen off, it boots into the boot loop, so I can never boot from a "powered off" mode, again, unless I let the battery run dead.
I've tried every button pressing boot sequence I can think of with no luck. Can't I just upload something to the device in "upload mode" ? I don't need any data off this device, I just want it to be reset back to day 1, so that I can turn it on and use it.
Thanks so much for your help. As you might imagine, this is a very frustrating problem.
bootloop
can someone please help me ,i have a samsung galaxy tab 2 10.1 ,and its on boot loop ,always showing smsung galaxy tab 2 logo,i've tried restoring factory settings ,,didn't work ,i tried to install receovery from internal sd card says not found ,some one pleeaaase send me the steps of what to do

[Q] Big problems with Huawei U8600-1 (T-Mobile Move Balance) -missing files

Good day to you all kind folks!
Basicly, i have the same problem as mr. adijat from http://forum.xda-developers.com/showthread.php?t=1816263 .
I was digging about link2sd with the phone from the subject and messed it up.
I managed to get it to boot to android again, but with limited capability:
1. Once connected to PC, it only charges, no mass storage, no usb debuging, no nothing.
2. Half of the applications are missing, like GooglePlay, Google Account Sinchronization etc.
I did try to install those manually, but to no avail, if i try to install GooglePlay.apk it just says: Application not installed.
I was google-ing for a way to adb push those applications, but i have no idea what parts of android system are responsible for USB controlers, and every try to find out doesnt end so good.
As for the original stock rom/firmware from huawei, they DO have the phone listed on their download page, but nothing to download from there, and from another sites i cant seem to find the specific rom for this model, although i've tried to install some similar ROMs like official U8650 and S8600, none worked ( when i enter in update screen, step 1/2 finishes and as soon as step 2/2 starts it says "Update Failed" and thats it.
I can't seem to get it to fastboot mode anymore also (Shut down > Plug to PC > Volume down+Power 2 sec > 10 sec Power ), because when i plug it in to PC while its shut down it doesnt go to battery charging screen, it just stays on white loading screen.
I'm baffeled with this, i'm not much of an expert on this stuff but i know the basics, and cant figure it out.
If anyone has any solutions, it would be great!
Greetings from Croatia and I'm sorry in advance if i posted in wrong part of the forums, this is the best i could find.
bagio007 said:
Good day to you all kind folks!
Basicly, i have the same problem as mr. adijat from http://forum.xda-developers.com/showthread.php?t=1816263 .
I was digging about link2sd with the phone from the subject and messed it up.
I managed to get it to boot to android again, but with limited capability:
1. Once connected to PC, it only charges, no mass storage, no usb debuging, no nothing.
2. Half of the applications are missing, like GooglePlay, Google Account Sinchronization etc.
I did try to install those manually, but to no avail, if i try to install GooglePlay.apk it just says: Application not installed.
I was google-ing for a way to adb push those applications, but i have no idea what parts of android system are responsible for USB controlers, and every try to find out doesnt end so good.
As for the original stock rom/firmware from huawei, they DO have the phone listed on their download page, but nothing to download from there, and from another sites i cant seem to find the specific rom for this model, although i've tried to install some similar ROMs like official U8650 and S8600, none worked ( when i enter in update screen, step 1/2 finishes and as soon as step 2/2 starts it says "Update Failed" and thats it.
I can't seem to get it to fastboot mode anymore also (Shut down > Plug to PC > Volume down+Power 2 sec > 10 sec Power ), because when i plug it in to PC while its shut down it doesnt go to battery charging screen, it just stays on white loading screen.
I'm baffeled with this, i'm not much of an expert on this stuff but i know the basics, and cant figure it out.
If anyone has any solutions, it would be great!
Greetings from Croatia and I'm sorry in advance if i posted in wrong part of the forums, this is the best i could find.
Click to expand...
Click to collapse
bagio007 do not try to restore with another roms because it is useless. try it only with fastboot ...
you nedd to boot in recovery mode and try to flash with fastboot
boot.img
recovery.img
system.img
STEPS:
Turn off the phone, disconnect the USB cable and remove the battery
Reinsert the battery into the phone
Turn on phone into fastboot mode
Press the volume up button for 1 second.
Holding volume up, press the power button, holding down both buttons for 4 seconds.
After that, release the power button first, then the Volume Up button.
The screen should remain black ...
Try to reset factory a prhone in recovery mode ..
move the bar with volume up/down key and power button to accept
if not wort thats try to flash with fastboot
Reconnect the phone and verify, that the phone is in fastboot. Type into the Command Prompt or terminal:
fastboot devices
Now flash the firmware:
fastboot flash boot /path/to/boot.img
fastboot flash recovery /path/to/recovery.img
fastboot flash system /path/to/system.img
fastboot flash userdata /path/to/userdata.img
Reboot the phone
fastboot reboot

[Q] Neutab N7 tablet bootloader/fastboot?

I have a fairly generic Chinese tablet, a Neutab N7 (not a Nexus 7), but I have no idea how to enter the bootloader/fastboot mode.
Using adb, "adb reboot bootloader" or "adb reboot-bootloader" just makes it reboot normally.
From a shell, doing "su reboot bootloader" also reboots normally.
I tried Quick Boot from Google Play which has an option to reboot into the bootloader, but it also just ends up rebooting normally.
While powered off, I tried holding power and volume up, power and volume down, and power and both volume up and down, but they all just boot normally.
Doing "adb reboot recovery" does boot me into recovery mode, but the menu doesn't have a bootloader/fastboot option.
Does anyone have any idea how to enter the bootloader/fastboot mode for this tablet? Any help would be appreciated.
knismaps said:
I have a fairly generic Chinese tablet, a Neutab N7 (not a Nexus 7), but I have no idea how to enter the bootloader/fastboot mode.
Using adb, "adb reboot bootloader" or "adb reboot-bootloader" just makes it reboot normally.
From a shell, doing "su reboot bootloader" also reboots normally.
I tried Quick Boot from Google Play which has an option to reboot into the bootloader, but it also just ends up rebooting normally.
While powered off, I tried holding power and volume up, power and volume down, and power and both volume up and down, but they all just boot normally.
Doing "adb reboot recovery" does boot me into recovery mode, but the menu doesn't have a bootloader/fastboot option.
Does anyone have any idea how to enter the bootloader/fastboot mode for this tablet? Any help would be appreciated.
Click to expand...
Click to collapse
why do you want to enter the bootloader? and have they made any roms or cwm recovery for these types of generic android tablets?
[RESOLVED] finally, ROOT for Neutab N7 pro tablet.
knismaps said:
I have a fairly generic Chinese tablet, a Neutab N7 (not a Nexus 7), but I have no idea how to enter the bootloader/fastboot mode.
Using adb, "adb reboot bootloader" or "adb reboot-bootloader" just makes it reboot normally.
From a shell, doing "su reboot bootloader" also reboots normally.
I tried Quick Boot from Google Play which has an option to reboot into the bootloader, but it also just ends up rebooting normally.
While powered off, I tried holding power and volume up, power and volume down, and power and both volume up and down, but they all just boot normally.
Doing "adb reboot recovery" does boot me into recovery mode, but the menu doesn't have a bootloader/fastboot option.
Does anyone have any idea how to enter the bootloader/fastboot mode for this tablet? Any help would be appreciated.
Click to expand...
Click to collapse
Having been looking for this information myself i'm sharing real quick here what i've found. Scouring the net all over i've found NOTHING specific for these Chinese tablets but after finally getting on the scent of VROOT I downloaded and tried iROOT essentially a one-click rooter the .APK **DID NOT WORK** but the PC version **DID** can be found by googling iroot or vroot.
RE: bootloader, i've still found no way or any good info on entering the bootloader AFAIK this is locked and may not be possible without some good hard hacking on the firmware, I DO KNOW that if you try entering the "bootloader" with a reboot manager on the device u will find yourself at the "NeuTab" welcome screen and stuck. Fortunately at least in my experience, letting the tablet battery run down low you can boot back into it and root condition is still good.
Hope this helps somewhat I know its an old post but a lot of people have been looking for this info have yet to post on authors site confirming that the NeuTab also works with his software.
peace.
VE3UND
BTW I forgot to mention the site and the software (ALTHOUGH IT STATES OTHERWISE) is in Chinese. A leap of faith needed there I know but i confirm this method works. l8z
BTW^2 ALSO the android version was KitKat as received from the mfg, also have been told that Jellybean will install on the tablet after rooting and maybe is now included with device but don't quote me on that.
all in all a really nice tab for the price, especially now we have root biggest missing option: GPS but you can tether to another device with gps if you need to. Also no built in USB HOST MODE. //out
I've got the NeuTab N10 and can't get ADB to see it at all. How did you get ADB to work with your N7, were you able to find NeuTab ADB drivers somewhere?
So i recently came across this tablet in my stuff... something i picked up for the wife a few years back.
I also came across this website.... http://neutab.com/info-detail.php?InfoId=11
It has all the tools and programs that the company uses. includes all files for development of their entire line of tablets.
Thought this may be useful. just click on the link that says pheonixtools.zip and it will take you to a back end file server... This tablet is about as open sourced as it gets... so... this leads me to ask a question i have been struggling with for the last 2 years of being a member on this website...
can anyone... please... help me develop my first recovery and custom rom for this tablet? I just have never done it all the way... i have set up a couple things here and there... figured out how to strip the stock recovery and boot... but never got further than that.
Thanks for the help.
• Unzip phoenix tool.zip you just downloaded; (to open a .zip file, download WinRAR)
• In the folder of phoenix tool you just unzipped, depending on your system specs, select "drvinstaller_X64", "drvinstaller_x86" or "drvinstaller_IA64" to install tablet driver; Or you can run all three driver installer and at least one will work;
• Run "PhoenixSuit.exe", select "firmware" tab;
• Click on "Image" button, choose the firmware you just downloaded;
• Turn your tablet completely off (by press and hold power button for 20 seconds), press and hold "volume -" button, connect tablet to computer via usb cable, keep volume button held, press power button 10 times repeatedly;
• The phoenix tool should recognize the tablet. On pop-up dialog window, select if you want to format and wipe out everything on your tablet;
• The phoenix tool will start flash the firmware to the tablet. Wait till it is done;
• When upgrade is finished, disconnect your tablet from computer, press and hold power button for 10 seconds to quit upgrade mode. then press and hold power button for 2-4 seconds to turn tablet on;
Congratulations! Your tablet is now refreshed.
Ok so I have a NueTab Air 7 Android and I have talked toto their customer support which did neurologist absolutely no good. I have been trying to hard reset my tablet and do a factory reset by holding down the volume up and down keys and the power keys until it gives me the option of rebooting. However, there is no option for a factory reset. Only a Recovery mode, Fastboot mode, and Normal mode. I tired the Normal and Recovery an both sent me back to enter password that I can't rremember, which isthe why I'm resetting it lol. Finally I chose the Fastboot option and now it is stuck on that option and has been for almost an hour. It willwas not let me power off, try to hard reset, it is literally stuck. And it is a hundred percent charged. I do jot hav the optiontime to connectbe the tablet to acall Windows computer at this timetime, as the forums I have read say can possibly fix the issue. And what a surprise the customer service phone number for this specific tablet does not know how to fix it!!!!! Not surprised at all. If anyone at allthe has any ideas or knows what to do or howsomething to fix it please help meme. I'm very frustrated to say thethat least and in desperate need of help. Anything would be immensely appreciated. ~Melissa
How to identify the exact firmware of the N7 after this page (Oficial NEUTAB), I have 3 options but that IMEI series is nowhere in the table.
---------- Post added at 11:35 PM ---------- Previous post was at 11:35 PM ----------
this page http://neutab.com/info-detail.php?InfoId=11
n7s root
therealtaynak said:
So i recently came across this tablet in my stuff... something i picked up for the wife a few years back.
I also came across this website.... http://neutab.com/info-detail.php?InfoId=11
It has all the tools and programs that the company uses. includes all files for development of their entire line of tablets.
Thought this may be useful. just click on the link that says pheonixtools.zip and it will take you to a back end file server... This tablet is about as open sourced as it gets... so... this leads me to ask a question i have been struggling with for the last 2 years of being a member on this website...
can anyone... please... help me develop my first recovery and custom rom for this tablet? I just have never done it all the way... i have set up a couple things here and there... figured out how to strip the stock recovery and boot... but never got further than that.
Thanks for the help.
Click to expand...
Click to collapse
I would love to root this tablet purely because it's my daughter's and some of the games she likes has some real funky permissions That they want! A custom rom would be nice but I will be satisfied with being able to revoke some of the permissions that the apps want to have access to.
n7s software download issue
therealtaynak said:
• Unzip phoenix tool.zip you just downloaded; (to open a .zip file, download WinRAR)
• In the folder of phoenix tool you just unzipped, depending on your system specs, select "drvinstaller_X64", "drvinstaller_x86" or "drvinstaller_IA64" to install tablet driver; Or you can run all three driver installer and at least one will work;
• Run "PhoenixSuit.exe", select "firmware" tab;
• Click on "Image" button, choose the firmware you just downloaded;
• Turn your tablet completely off (by press and hold power button for 20 seconds), press and hold "volume -" button, connect tablet to computer via usb cable, keep volume button held, press power button 10 times repeatedly;
• The phoenix tool should recognize the tablet. On pop-up dialog window, select if you want to format and wipe out everything on your tablet;
• The phoenix tool will start flash the firmware to the tablet. Wait till it is done;
• When upgrade is finished, disconnect your tablet from computer, press and hold power button for 10 seconds to quit upgrade mode. then press and hold power button for 2-4 seconds to turn tablet on;
Congratulations! Your tablet is now refreshed.
Click to expand...
Click to collapse
I have yet to be able to download the zip or the firmware software. i got root with kingo pc version but that's pretty much it and I can't change the route manager because once I delete that then I don't have root anymore and can't add another one. Also I have yet to been able to get into or see download mode on this either. It just stays on the screen with the name on it and that's pretty much it. no bootloader unlock either

Update to MOB30G - Failed and now can't boot?! - Please Help!

Hello All,
I have a completely stock (Not rooted, and bootloader is locked) Nexus 9 (wifi) that will no longer boot after trying to update to the latest security patch (MOB30G).
I received the notification that there was an update available for my Nexus 9 this weekend. It was functioning just fine, so I chose to download an install the update.
I let it do its thing, and some time during the process something went wrong. I came back to see the little android picture with red "!". There were no words or messages with the error picture.
When I rebooted, There was a momentary message that stated that, "Device is corrupt and cannot be trusted..." and "...press the power button to pause boot".
It then goes back to the little android picture with the red exclamation mark and says "No Command".
I am at a total loss at what to do. It was completely stock, never rooted or anything else and I was applying a factory update?
Please help!
-Jason
@Jsunn Try side-loading the OTA update again from recovery.
Instructions can be found here.
If that doesn't work, try side-loading the Android N OTA instead.
I just had to deal with this after the May OTA. My device was locked and ADB was not enabled but I was able to sideload the dev preview of Android N.
I used the info at this link: Search "Reset your Nexus device to factory settings"
Specifically these steps:
Option 2: Reset device in Recovery mode
If you can't open the Settings app because of device issues, you can use Recovery mode to factory data reset ("format") your device.
Tip: If your device becomes unresponsive at any point, you can restart it by holding down the Power button for several seconds.
After following all the Before you start steps above:
If your device is on, turn it off.
Press & hold the Volume down button. While holding Volume down, press & hold the Power button until the phone turns on. You'll see the word "Start" with an arrow around it.
Press the Volume down button until you highlight "Recovery mode."
Press the Power button to start recovery mode. You'll see an image of an Android robot with a red exclamation mark (you may also see "No command").
Press & hold the Power button. While holding Power, press the Volume up button once. Then release the Power button.
Press the Volume down button until you highlight "Wipe data/factory reset." Then press the Power button.
Press the Volume down button until you highlight "Yes" (or "Yes - delete all user data"). Then press the Power button to select it.
After the reset is complete, press the Power button to select "Reboot system now."
When you're done, restore your data.
My biggest issue was not realizing the second menu was available. After getting "No Command" the power and vol up buttons are what get you to where you can use adb to sideload even if you never unlocked your device. This might work with a normal marshmallow OTA (Search for "Factory Images for Nexus Devices") but I used the N preview 2 which can be found by searching for "volantis-npc91k"
This had me fuming for a few days... No way I was sending a nexus device back and paying shipping for bricking after a stock update.
NOTE: Sorry I had to remove the direct links. My profile doesn't have enough posts yet. Really dumb, but I get it. Hope this helps.
Thanks for your help. I will try it this week.
Pretty bummed about this, I didn't have a lot of stuff on there but don't like having to deal with this.
Do you know what could have caused it?
-J
Had same issu with May update and applied the N preview OTA (that's the only thing you can do on a locked bootloader).
Once booted in N preview, I've enrolled the device in the beta program, then retired. Few seconds after, I've received the downgrade OTA, and no more issue.
Before doing anything else, I've unlocked the bootloader so at least it if occurs again with the MOB30G, I will have some more access !
Jsunn said:
Thanks for your help. I will try it this week.
Pretty bummed about this, I didn't have a lot of stuff on there but don't like having to deal with this.
Do you know what could have caused it?
-J
Click to expand...
Click to collapse
Nobody knows what causes this, maybe a corrupted download of the OTA.
It happens to people's devices nearly every month when an OTA is available.
Try sideloading the failed OTA (linked above) again first before taking the Android N route.
Google Now provide full block level OTA images, so they can be sideloaded onto your device no matter what version your on.
https://developers.google.com/android/nexus/ota
Use the latest OTA image from that link, instead of sideloading the patching OTA zips.
I can't seem to sideload the package. My computer doesn't detect that a fastboot device in connected.
I am trying a factory reset now? If that doesn't work, I guess I can try the N preview? Other suggestions?
Thanks,
Jason
@Jsunn Make sure you have the correct drivers on your computer, Nexus Root Toolkit has a driver installation guide.
Check that your in fastboot mode and your device should show up in device manager as
Android Device - Android Bootloader Interface
@corkiejp, Thank you for the tip. That was it and I now am back up and running. I am back on the May 1 Security update. I'd really like to avoid having to do this again in the future. Do you have any suggestions? i.e. should I always sideload the update? Customer ROM etc?
Thanks,
-J
@Jsunn What was the trick? Reinstalling drivers, i Guess.
Remember to Enable OEM unlocking in developer options.
And if you have already factory reset? It might be a good time to Unlock Your bootloader with "fastboot oem unlock".
So if anything goes wrong in the future, you will have the option to flash factory images.
corkiejp said:
@Jsunn What was the trick? Reinstalling drivers, i Guess.
Remember to Enable OEM unlocking in developer options.
And if you have already factory reset? It might be a good time to Unlock Your bootloader with "fastboot oem unlock".
So if anything goes wrong in the future, you will have the option to flash factory images.
Click to expand...
Click to collapse
It was the drivers, I didn't think to check that the first time. I am going to unlock the book loader, I was thinking the exact same thing! I'm just glad to be back up and running.
-J

Question Oem unlock not appearing

Somewhere around mid 2020 i decided it would be fun in trying to unlock my phone. I actually almost succeed, the only problem was that i didny have wifi or cellular available, so i reflashed the stock os, locked the bootloader and called it a day. Now i want to try this again, but the oem unlock option is nowhere to be found. I've tried everything, "fastboot oem unlock", "fastboot flashing unlock", changing the date, etc. I clearly remember the "your phone is not running certified software" when i almost got majisk to work, but now I cant even find the oem unlock. I just want to use google pay man...
Information:
Model: SM-A025G
Android version: 12
Product code: SM-A025GZKEORO
I'll give any additional info needed.
TheBlazed said:
Somewhere around mid 2020 i decided it would be fun in trying to unlock my phone. I actually almost succeed, the only problem was that i didny have wifi or cellular available, so i reflashed the stock os, locked the bootloader and called it a day. Now i want to try this again, but the oem unlock option is nowhere to be found. I've tried everything, "fastboot oem unlock", "fastboot flashing unlock", changing the date, etc. I clearly remember the "your phone is not running certified software" when i almost got majisk to work, but now I cant even find the oem unlock. I just want to use google pay man...
Information:
Model: SM-A025G
Android version: 12
Product code: SM-A025GZKEORO
I'll give any additional info needed.
Click to expand...
Click to collapse
Perform a factory reset after removing your SIM. Skip through setup and do not connect to WiFi. Set the time manually, wait a few minutes, then change the date to at least 7 days from now, and wait a few more minutes. The toggle should appear.
However...Since you've unlocked before, maybe you could just see if you're able to unlock the bootloader?
V0latyle said:
Perform a factory reset after removing your SIM. Skip through setup and do not connect to WiFi. Set the time manually, wait a few minutes, then change the date to at least 7 days from now, and wait a few more minutes. The toggle should appear.
However...Since you've unlocked before, maybe you could just see if you're able to unlock the bootloader?
Click to expand...
Click to collapse
Havent thought about resetting without the sim, good idea!
About the bootloader, if you mean unlocking it in download mode (holding volume up + volume down while plugging in a usb cable) I dont get such option. I can only enter download mode or restart the phone.
I will respond hopefully tomorrow with an update.
TheBlazed said:
Havent thought about resetting without the sim, good idea!
About the bootloader, if you mean unlocking it in download mode (holding volume up + volume down while plugging in a usb cable) I dont get such option. I can only enter download mode or restart the phone.
I will respond hopefully tomorrow with an update.
Click to expand...
Click to collapse
When you're in download mode, hold Volume Up until the bootloader unlock warning text appears.
Heres the update:
V0latyle said:
Perform a factory reset after removing your SIM. Skip through setup and do not connect to WiFi. Set the time manually, wait a few minutes, then change the date to at least 7 days from now, and wait a few more minutes. The toggle should appear.
However...Since you've unlocked before, maybe you could just see if you're able to unlock the bootloader?
Click to expand...
Click to collapse
I have done the factory reset and changed the phone date, and it (of course) didn't work.
V0latyle said:
When you're in download mode, hold Volume Up until the bootloader unlock warning text appears.
Click to expand...
Click to collapse
In download mode there is no (hold volume up) option, just volume up to continue, volume down to cancel and side key to show barcode. Something that I have noticed different from other download modes is that mine is also translated in (i presume) korean and japanese.
Heres some more information that may be relevant:
In download mode pressing the volume up key to continue shows these in the top left screen:
CURRENT BINARY: Samsung Official
OEM LOCK: ON (U1 )
KG STATUS : PRENORMAL
QUALCOMM SECUREBOOT: ENABLE (CSB)
RP SWREV: S1, T1, R1, A5, P5
RP SWREV: K 5, S 5
SECURE DOWNLOAD: ENABLE
DID: 0000746645d2
download mode !!
TheBlazed said:
In download mode there is no (hold volume up) option, just volume up to continue, volume down to cancel and side key to show barcode. Something that I have noticed different from other download modes is that mine is also translated in (i presume) korean and japanese.
Click to expand...
Click to collapse
Okay, let's try this again.
When you start download mode and see the options for Volume Up and Volume Down, just hold the Volume Up button. There isn't a prompt because it's "hidden" - unlocking the bootloader is supposed to be deliberate, not something that can be done accidentally.
Continue holding Volume Up until the bootloader unlock prompt appears.
TheBlazed said:
OEM LOCK: ON (U1 )
Click to expand...
Click to collapse
This means your bootloader is locked.
V0latyle said:
Okay, let's try this again.
When you start download mode and see the options for Volume Up and Volume Down, just hold the Volume Up button. There isn't a prompt because it's "hidden" - unlocking the bootloader is supposed to be deliberate, not something that can be done accidentally.
Continue holding Volume Up until the bootloader unlock prompt appears.
This means your bootloader is locked.
Click to expand...
Click to collapse
Holding the volume up button no matter for how long will still result into nothing, sadly.
V0latyle said:
Okay, let's try this again.
When you start download mode and see the options for Volume Up and Volume Down, just hold the Volume Up button. There isn't a prompt because it's "hidden" - unlocking the bootloader is supposed to be deliberate, not something that can be done accidentally.
Continue holding Volume Up until the bootloader unlock prompt appears.
This means your bootloader is locked.
Click to expand...
Click to collapse
i need to contact you ..not from xda.via whatsapp ,telegram or any other.
HirukaNU15 said:
i need to contact you ..not from xda.via whatsapp ,telegram or any other.
Click to expand...
Click to collapse
Absolutely not. I do not provide private support, and under no circumstances is any member of XDA obligated to provide their private contact information. If you have a question, ask it here. We also do not allow using XDA to divert users to other platforms, per the XDA Telegram Policy.
If you need to contact a member of the XDA staff, you can either PM a moderator such as myself, or you can use the Contact Us link at the bottom of the page. You can also use the Report button to contact the XDA staff concerning a particular post if there's a problem.
TheBlazed said:
Holding the volume up button no matter for how long will still result into nothing, sadly.
Click to expand...
Click to collapse
You are able to boot into Download Mode?
Just to be clear, here's the steps:
Disconnect device from USB cable (leave cable plugged into PC) and turn device completely off
Wait about 30 seconds
WITHOUT PRESSING POWER, hold both Volume buttons, and while holding plug in the USB cable from PC
Device should start with a custom OS warning and a prompt. Release all buttons. One of the options should be "Volume up long press: Device unlock mode". If you do not see this option, hit Volume Down to cancel.
If you can, provide photos of the screen.

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