Database Users

Nexus 7 only boots into Fastboot Mode

Hello,
my Nexus 7 wasn't turned on since 3 weeks. Yesterday, I tried to boot it but it just shows the Google logo. The same with the Recovery. So I tried to install with N-Cry a Recovery, it shows that the installation was successfull, but it won't change everything. The same with the factory ROM, I tried it to install it via ADB, it shows that the installation was successfull, but it doesn't boot and still stucks in the Google-Screen. Know? What can I do? Is it a hardware problem? That would be terrible, because the gueranty ended august 2013.
Greetz!
Edit: If I try to Shut it down via fastboot, it shows Unrecoverable Bootloader Error.

DELETE

I am having an identical issue. I have experienced and resolved the battery issues before. This is not that. I've tried factory resets, toolkit stock flashes, toolkit OS updates, adb wipes and flashes. Everything always says successfully completed but it only boots to Google logo and occasionally freezes on the nexus logo.
Does anyone have more info on the N7's acutal boot process? I assume the Google logo is the POST. Is the Nexus logo provided by the bootloader, the kernel or after the OS starts running?
Is there a way to install a new bootloader?
Is there a win7 or Debian program program that will show in more detail every single line and process during the boot process?

Yea, there is a way, I've allready done it, but it doesn't boot anyway. With the Baseband Version sorry, but it's my fault, there cannot be a Baseband Version on my Grouper.
My Fastboot shows:
Product Name - grouper
Variant - grouper
HW Version: ER3
Baseband Version - N/A
Serial Number: 015XXXXXXXXXXX
Singing: Not defiened yet
LOCK STATE - UNLOCKED

fixed mine, conflicting driver issue and used pdanet versions instead of universal.

Thanks man. That could be work. I will try it later. Anybody another ideas?
Sent from my GT-I9300 using xda app-developers app

Push! Please, anybody any another ideas? The driver wasn't the problem, it doesn't turn on. I can do anything, flash with ADB, flash with different Toolkits...
PLEASE I need my tab...

PUSH! Please help. I tried it so much times, I deinstalled all drivers and install different drivers again... Please what could I do?

Hi, i have this problem but worse is that the buttons of my tablet are not working. It seems i can not boot pass the fastboot whenever i try to reboot (using Wug's Toolkit). Please, does anybody here who can help?

Have you tried flashing back to stock with fastboot?
Sent from my SGH-I997 using XDA Premium 4 mobile app

yes, i have tried that but it still won't pass fastboot. i don't know what's happening. i even tried disconnecting the power/volume buttton cable and tried rebooting again to check if it was the one causing the problem but still it did the same thing.

akerocks said:
yes, i have tried that but it still won't pass fastboot. i don't know what's happening. i even tried disconnecting the power/volume buttton cable and tried rebooting again to check if it was the one causing the problem but still it did the same thing.
Click to expand...
Click to collapse
So, you downloaded the factory image from google and flashed via fastboot from the pc?
Sent from my SGH-I997 using XDA Premium 4 mobile app

yes, using wug's toolkit

akerocks said:
yes, using wug's toolkit
Click to expand...
Click to collapse
No, not wugs. Forget toolkits. First, go here and download the factory image.
https://dl.google.com/dl/android/aosp/nakasig-kot49h-factory-83d93b5f.tgz
Unzip into same folder on pc where you have fastboot binary.
Next, boot to fastboot. Plug N7 to the pc. Open pc directory where fastboot is. Open a command window. (Click on an empty section of the folder so no files are highlighted, hold shift key on keyboard and right click with mouse. Choose "open command window here" from the dropdown)
Type these commands.
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot flash bootloader bootloader-grouper-4.23.img
fastboot reboot-bootloader
sleep 10
fastboot -w update image-nakasi-kot49h.zip
Sent from my SGH-I997 using XDA Premium 4 mobile app

hi, thank you for the reply. i followed your steps but this is what i got...
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

akerocks said:
hi, thank you for the reply. i followed your steps but this is what i got...
Click to expand...
Click to collapse
The commands must correspond to the version you downloaded. Jkr16s....4.23...etc. Could you post a screenshot of the folder you have those files in? Ill see what the deal is
You unzipped the tar.gz, correct?
Sent from my SGH-I997 using XDA Premium 4 mobile app

akerocks said:
Click to expand...
Click to collapse
Here is the issue. When you downloaded the tar.gz file that the image-nakasi-kot49h.zip was in, ot also contains the bootloader and some files called .flash-all, .flash....etc. All thoes files need to be in this folder. The image cant be flashed without the bootloader being sucessfully flashed, and the -w command is not recognized withoit the .flash-all.... files. Unzip all the tar.gz contents into the folder and do it again. It will be fine.
Sent from my Nexus 7 using XDA Premium 4 mobile app

HELP!!! My nexus 4 is broken and failed to flash any img

I've tried to use the Wug's Nexus Root Toolkit (v1.7.9) and used the option of Flash stock + Unroot,
I've entered the bootloader mode to flash but I got this............ :crying:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
my nexus wont flash the img whatever I try to flash by the toolkit
please help

hey, did you unlock the bootloader 1st?

opssemnik said:
hey, did you unlock the bootloader 1st?
Click to expand...
Click to collapse
yes I did, my bootloader has already been unlocked

Flash factory image manually then, I don't trust in any program except my head
1. Download factory image
2. Download adb and fastboot
3. Extract factory image (all the files) in the adb/fastboot folder
4. Go into bootloader mode and connect it to the pc
5. Open a command window in the adb/fastboot folder
6. Type
Code:
fastboot erase system
fastboot erase userdata
fastboot erase cache
fastboot erase recovery
fastboot erase boot
7. Go to the adb/fastboot folder and select flash-all.bat file, and let it flash
It works absolutely always!!!

luiseteyo said:
Flash factory image manually then, I don't trust in any program except my head
1. Download factory image
2. Download adb and fastboot
3. Extract factory image (all the files) in the adb/fastboot folder
4. Go into bootloader mode and connect it to the pc
5. Open a command window in the adb/fastboot folder
6. Type
Code:
fastboot erase system
fastboot erase userdata
fastboot erase cache
fastboot erase recovery
fastboot erase boot
7. Go to the adb/fastboot folder and select flash-all.bat file, and let it flash
It works absolutely always!!!
Click to expand...
Click to collapse
I've no idea how to open a command window in the adb/fastboot folder :silly:
and what should be the folder name of the adb/fastboot folder?

John_Yiu said:
I've no idea how to open a command window in the adb/fastboot folder :silly:
and what should be the folder name of the adb/fastboot folder?
Click to expand...
Click to collapse
Are u using windows?

i suggest you go to this thread as you don't know how to use adb and fastboot http://forum.xda-developers.com/announcement.php?a=2018179
Sent from my Nexus 4 using XDA Premium 4 mobile app

shift + righ click on the folder and select open cmd prompt

problems solved! my phone is back, thanks all

[Q] Google nexus 7 (2012) - Unrooting leads to total failure(no recovery, no boot up)

Dear developers and other users!
I have been looking for same issues but I was unable to find answer for my problem.
About a year ago I unlocked and rooted my nexus 7 tablet to use special apps on it.
Today I tried to unroot and lock my device. On my laptop the program(Nexus Root Toolkit) said it was successful so I just needed to reboot the tablet.
After rebooting it stopped on the Google screen with a "Booting failed" text on the top left corner like that:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I think I have uninstalled android from the device but I can't Intsall a new one because recovery mode doesn't work and Android is not going to boot.
I can only use Bootloader. Bootloader looks like that:
Once I started my tablet it started in bootloader mode but every other startup fails on Google screen.
Please help me to use my tablet as before without root.
What should I do and how should I do that to get it work again?
Any help would be highly appreciated ​

Download a factory image from here https://developers.google.com/android/nexus/images and follow this guide to flash it http://forum.xda-developers.com/showthread.php?t=1907796
[GUIDE] Flashing a Factory Image with fastboot / return to stock
Sent from my GT-I8190 using Tapatalk

Carlyle_f said:
Download a factory image from here https://developers.google.com/android/nexus/images and follow this guide to flash it http://forum.xda-developers.com/showthread.php?t=1907796
[GUIDE] Flashing a Factory Image with fastboot / return to stock
Sent from my GT-I8190 using Tapatalk
Click to expand...
Click to collapse
Thank you but I have one big problem... I wouldn't have any trouble if I could run the android os on my tablet BUT after starting up it fails to boot so I can't enable usb debugging which I need for pusshong the new firmware. I wouldn't have any problem if II could be able to access my android setting :/
But I will give a chance for everything.( I need to make my device work befora july 2 because I want to use it on my holiday )

Eurioin said:
Thank you but I have one big problem... I wouldn't have any trouble if I could run the android os on my tablet BUT after starting up it fails to boot so I can't enable usb debugging which I need for pusshong the new firmware. I wouldn't have any problem if II could be able to access my android setting :/
But I will give a chance for everything.( I need to make my device work befora july 2 because I want to use it on my holiday )
Click to expand...
Click to collapse
You don't use USB debugging or adb in fastboot to flash the factory image. Follow the link and read the instructions carefully.
#stayparanoid

Pirateghost said:
You don't use USB debugging or adb in fastboot to flash the factory image. Follow the link and read the instructions carefully.
#stayparanoid
Click to expand...
Click to collapse
Thank you It is still not working :/ in cmd after each command it writes waiting for device

Eurioin said:
Thank you It is still not working :/ in cmd after each command it writes waiting for device
Click to expand...
Click to collapse
Fix your drivers then. Fastboot is the surefire way to fix your issue.
#stayparanoid

Eurioin said:
Thank you It is still not working :/ in cmd after each command it writes waiting for device
Click to expand...
Click to collapse
Its much easier on a Linux machine. All you need to do is open terminal and type "sudo apt-get install android-tools-adb android-tools-fastboot" and hit enter. Then extract the .tar file and double click "flash-all.sh" and choose run in terminal. Absolutely no driver headaches.
If you have access to a Linux machine (mint/ubuntu) or if you can dualboot Linux, this will really help
Sent from my GT-I8190 using Tapatalk

I too have this same issue...
Exception is my Nexus is locked... everytime I try to unlock it, it tries to reboot and never comes back on...
What am I doing wrong?

Thanks for everyone I successfully made my tablet work by flashing a stock android 4.4.2
The solution:
1. I connected to my father's laptop (with Win7 on it and mine had Win8.1 so you MUSN'T try fixing on Win8.1 because of the drivers) because my laptop detected the device as undefined USB component and my father's laptop showed the tablet as Nexus 7.
2. I found a working adb&fastboot here
3. After the download is done unip the file and run RUN ME.bat and type fastboot for help
*If needed after running the RUN ME.bat file type
fastboot oem unlock
Click to expand...
Click to collapse
(this will unlock your bootloader which is necessarry
for the following steps)
4. After reconnecting my device and booting to bootloader mode and downloaded the new firmware (unzipped into the fastboot folder) type fastboot
fastboot update image-nakasi-kot49h (this was the firmware that I needed to "update")
Click to expand...
Click to collapse
5. After the fastboot started working and flashing the new OS (it takes about 5 or 10 minuntes) the tablet will restart and starts optimizing all te apps that you had before (that happened in my case).
6. If you want you can lock your bootloader by giving the fastboot this command:
fastboot oem lock
Click to expand...
Click to collapse
And now I am using Android 4.4.4 on my nexus 7 tablet

Eurioin said:
Thanks for everyone I successfully made my tablet work by flashing a stock android 4.4.2
The solution:
1. I connected to my father's laptop (with Win7 on it and mine had Win8.1 so you MUSN'T try fixing on Win8.1 because of the drivers) because my laptop detected the device as undefined USB component and my father's laptop showed the tablet as Nexus 7.
2. I found a working adb&fastboot here
3. After the download is done unip the file and run RUN ME.bat and type fastboot for help
*If needed after running the RUN ME.bat file type (this will unlock your bootloader which is necessarry
for the following steps)
4. After reconnecting my device and booting to bootloader mode and downloaded the new firmware (unzipped into the fastboot folder) type fastboot
5. After the fastboot started working and flashing the new OS (it takes about 5 or 10 minuntes) the tablet will restart and starts optimizing all te apps that you had before (that happened in my case).
6. If you want you can lock your bootloader by giving the fastboot this command:
And now I am using Android 4.4.4 on my nexus 7 tablet
Click to expand...
Click to collapse
I was hopeful that this would work for me.... I am using a win 8.1 machine and the downloaded fastboot and adb seemed to work fine.
I go to do a fastboot unlock and I get the following:
(bootloader) erasing userdata...
(bootloader) erasing userdata done...
(bootloader) erasing cache...
(bootloader) erasing cache done...
(bootloader) unlocking....
FAILED (remote: (Unknown error code))
finshed. total time: 7.902s
So..... Anyone ? The tablet does ask if I want to Unlock the Bootloader... I select yes and hit the power button to select... yet the tablet goes back to the android screen... The top of the screen says Unlocking now...... yet it doesn't...
Please help...

how to brick Meizu m3 note? thanks for your help!

ppl would get worried about this title, but I can definitely tell you that I really neet to brick it!!
I've tried the following methods:
1. dd if=/dev/zero of=/dev/block/platform/mtk-msdc.0/by-name/lk
2. fastboot
3. flashfire, cannot log in sys, but still alive!
any custom rec? TWRP or ?
all failed..plz post your solution here!

lemon721 said:
ppl would get worried about this title, but I can definitely tell you that I really neet to brick it!!
I've tried the following methods:
1. dd if=/dev/zero of=/dev/block/platform/mtk-msdc.0/by-name/lk
2. fastboot
3. flashfire, cannot log in sys, but still alive!
any custom rec? TWRP or ?
all failed..plz post your solution here!
Click to expand...
Click to collapse
Flash a ROM not intended for your device?

Soft or hard brick?

RAZERZDAHACKER said:
Flash a ROM not intended for your device?
Click to expand...
Click to collapse
nope..it does not have custom rec

es0tericcha0s said:
Soft or hard brick?
Click to expand...
Click to collapse
both r fine..

Do "fastboot erase boot" then "fastboot erase recovery" then "fastboot erase system". May I ask, why do you want it bricked?

Ahh !!! yoy flashed wrong file in wrong file system.....never do such stuff....as meizu's bootloader locked you can't do anything now....try to flash system.ing via adb

meizu m3 note L681H adb flash or fastboot flash how?
i have a problem like this. my meizu m3 note. it works not correctly. i need to flash it with update.zip file. i can get shell from adb with
adb shell
but i can get root permission i dont know why. can any one tell me how can i flash my meizu m3 note via adb or fastboot

sensey666 said:
i have a problem like this. my meizu m3 note. it works not correctly. i need to flash it with update.zip file. i can get shell from adb with
adb shell
but i can get root permission i dont know why. can any one tell me how can i flash my meizu m3 note via adb or fastboot
Click to expand...
Click to collapse
Is your phone rooted? If yes, a root permission request should pop up on your device, if not, you won't get any adb shell with root access. To flash via adb, boot into recovery and choose apply update from adb. To flash via fastboot, type adb reboot fastboot or adb reboot bootloader.
If I helped, hit "thanks" .

RAZERZDAHACKER said:
Is your phone rooted? If yes, a root permission request should pop up on your device, if not, you won't get any adb shell with root access. To flash via adb, boot into recovery and choose apply update from adb. To flash via fastboot, type adb reboot fastboot or adb reboot bootloader.
If I helped, hit "thanks" .
Click to expand...
Click to collapse
The problem is on my phone it open but mostly without anything on screen (black). and sometimes it opens just with flyme balon turning. nothing more. adb reboot-bootloader is working but when i type fastboot update update.zip it say
"archive does not contain 'android-info.txt’
archive does not contain 'android-product.txt’
error: update packge has no android-info.txt or android-product.txt"
do i type wrong code? what should i type for flashing the meizu m3 note?

sensey666 said:
The problem is on my phone it open but mostly without anything on screen (black). and sometimes it opens just with flyme balon turning. nothing more. adb reboot-bootloader is working but when i type fastboot update update.zip it say
"archive does not contain 'android-info.txt’
archive does not contain 'android-product.txt’
error: update packge has no android-info.txt or android-product.txt"
do i type wrong code? what should i type for flashing the meizu m3 note?
Click to expand...
Click to collapse
i found the problem:
My problem is i update my Meizu M3 note L681H with M model rom. if i find orijinal rom for L681H i can sove my problem can anyone help?

sensey666 said:
The problem is on my phone it open but mostly without anything on screen (black). and sometimes it opens just with flyme balon turning. nothing more. adb reboot-bootloader is working but when i type fastboot update update.zip it say
"archive does not contain 'android-info.txt’
archive does not contain 'android-product.txt’
error: update packge has no android-info.txt or android-product.txt"
do i type wrong code? what should i type for flashing the meizu m3 note?
Click to expand...
Click to collapse
Type "fastboot flash update.zip", report result with log.
If I helped, hit "thanks" .

RAZERZDAHACKER said:
Type "fastboot flash update.zip", report result with log.
If I helped, hit "thanks" .
Click to expand...
Click to collapse
it says
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

sensey666 said:
it says
Click to expand...
Click to collapse
Oh sorry. try "fastboot update update.zip".
Hit "thanks" if I helped ya

RAZERZDAHACKER said:
Oh sorry. try "fastboot update update.zip".
Hit "thanks" if I helped ya
Click to expand...
Click to collapse
i tried this code “fastboot update update.zip” but is says:
archive does not contain 'android-info.txt’
archive does not contain 'android-product.txt’
error: update packge has no android-info.txt or android-product.txt

sensey666 said:
i tried this code “fastboot update update.zip” but is says:
archive does not contain 'android-info.txt’
archive does not contain 'android-product.txt’
error: update packge has no android-info.txt or android-product.txt
Click to expand...
Click to collapse
Unzip it and tell me what is in there, there might be a bunch of .img and .img.gz files

RAZERZDAHACKER said:
Unzip it and tell me what is in there, there might be a bunch of .img and .img.gz files
Click to expand...
Click to collapse

sensey666 said:
Click to expand...
Click to collapse
Can you upload these files somewhere? I might be able to script an updater-script for you to get you working.

RAZERZDAHACKER said:
Can you upload these files somewhere? I might be able to script an updater-script for you to get you working.
Click to expand...
Click to collapse
thank you here is the update.zip file
https://yadi.sk/d/GC5TVAfiuuBeH

sensey666 said:
thank you here is the update.zip file
https://yadi.sk/d/GC5TVAfiuuBeH
Click to expand...
Click to collapse
I'll take a look when I get home

[Howto] unlock bootloader and get TWRP on ZUK Z2 Pro

DISCLAIMER:
take care, this will erase all data on phone. I'm not responsible for any data loss. Follow the instructions on your own risk!
---------------------------------------
You updated to ZUI 3.5 using https://forum.xda-developers.com/zu...-to-zui-z2-t3928693/post79493369#post79493369 ? Congrats!
Once you updated to ZUI 3.5 you don't need to get unlock_bootloader.img anymore.
To activate developer option click 7 times on ZUI version under settings - system - about:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
-
-
Once you did that you get developer options in settings - system:
Click on it and activate the options OEM unlocking and USB debugging
You can accept the following warning:
Now:
Setup ADB and Fastboot on your PC. (can be found here as well: https://forum.xda-developers.com/showthread.php?t=2317790)
Connect your Lenovo ZUK phone to the PC.
└ If you get a prompt on phone’s screen to Allow USB debugging, tap OK.
Open a command window inside the folder where you saved your adb and fastboot install (I suggest using C:\ZUK). To do this, open the folder and then “Shift + Right click” on any empty white-space inside the folder and select “Open command window here” from the context menu.
Once command window is open, issue the following command to boot device into bootloader mode:
adb reboot bootloader
Once in bootloader mode, issue the following command to unlock the device:
fastboot -i 0x2b4c oem unlock-go
└ You’ll see the following output:
...
OKAY [ 0.041s]
finished. total time: 0.041s
Now phone will reboot. Let the reboot finish completely. Then do "adb reboot bootloader" again.
now flashing twrp. Download latest twrp version here: https://twrp.me/zuk/zukz2row.html
Make sure the downloaded twrp version is located in adb directory as well. Rename it into twrp.img. Then in command prompt type:
fastboot flash recovery twrp.img
(if your device is not recognized check hardware manager for driver. You may use fastboot -i 0x2b4c flash recovery twrp.img instead)
Reboot your phone to system using the following command:
fastboot reboot
That's it. You unlocked bootloader and flashed twrp.
--------------------------------------------------------------------

Hello,
I have done evreything as you described in your "howto"
I have now unlock bootloader and TWRP installed. Each time I try to flash a custom rom I have "fail to mount /vendor (invalid argument)..." error.
Still the custom rom I have tried to flash were recent Pie roms so factory to vendor problem should not be the problem.
I think there is somethig here that I did not understood
Can someone help me please?
Thank you

fastboot does not accept the option -i
Thanks for the detailed description.
weimerd said:
DISCLAIMER:
take care, this will erase all data on phone. I'm not responsible for any data loss. Follow the instructions on your own risk!
---------------------------------------
5. Once in bootloader mode, issue the following command to unlock the device:
fastboot -i 0x2b4c oem unlock-go
└ You’ll see the following output:
...
OKAY [ 0.041s]
finished. total time: 0.041s
--------------------------------------------------------------------
Click to expand...
Click to collapse
I am on step 5 with fastboot oem unlock-go. However, it sas "fastboot: unknown option -i"
What may be the issue?
My phone is zuk z2 pro (z2121)
ZUI 3.5.3165
Android 8.0.0
Android patchdate: 5.02.2018
usb debugging is active
oem unlock is also done
"adb devices" shows me the device. I can also change into bootlaoder using the command "adb reboot bootloader". The phone is connected via
I am stuck and the phone still has the chinese rom, I cannot seem to proceed. Thanks for any pointers.