Database Users

After oem unlock its stuck at boot logo

guys i did oem unlock and when i reboot its just stuck on the nexus logo. whats going on? i am using a mac. i flashed the stock image and it was back to stock but whenever i do oem unlock and reboot it does not boot its stuck at the logo

flameinthefire said:
guys i did oem unlock and when i reboot its just stuck on the nexus logo. whats going on? i am using a mac. i flashed the stock image and it was back to stock but whenever i do oem unlock and reboot it does not boot its stuck at the logo
Click to expand...
Click to collapse
Try this, had the same problem yesterday:
If you get stuck in a bootloop rebooting the tablet after unlocking the bootloader...
Here's what you do..
1) During the bootloop.. hold the power button + volume up + volume down button simultaneously to get yourself back into fastboot mode as you were previously.
2) In fastboot mode.. use the volume keys to scroll to Recovery and the power button to select it.
3) In Recovery (Android robot on his back with a red triangle)... tap the volume up button and the power button simultaneously which will bring you into stock recovery. Again.. Don't hold the buttons, just tap them simultaneously. Also make sure you're holding the correct volume button. Up will be the volume key on the right.
4) Once you're in Recovery.. perform a factory reset/data wipe and then reboot your tablet... you should now be back to the Welcome Screen.
The guide is from "Cyber Warrior" over on AndroidCentral, google "[How-to] Unlock/Re-lock the Google Nexus 10 Bootloader (Mac/PC)" (can't post links yet), in the 2nd post
--fbrozovic

fbrozovic said:
Try this, had the same problem yesterday:
If you get stuck in a bootloop rebooting the tablet after unlocking the bootloader...
Here's what you do..
1) During the bootloop.. hold the power button + volume up + volume down button simultaneously to get yourself back into fastboot mode as you were previously.
2) In fastboot mode.. use the volume keys to scroll to Recovery and the power button to select it.
3) In Recovery (Android robot on his back with a red triangle)... tap the volume up button and the power button simultaneously which will bring you into stock recovery. Again.. Don't hold the buttons, just tap them simultaneously. Also make sure you're holding the correct volume button. Up will be the volume key on the right.
4) Once you're in Recovery.. perform a factory reset/data wipe and then reboot your tablet... you should now be back to the Welcome Screen.
The guide is from "Cyber Warrior" over on AndroidCentral, google "[How-to] Unlock/Re-lock the Google Nexus 10 Bootloader (Mac/PC)" (can't post links yet), in the 2nd post
--fbrozovic
Click to expand...
Click to collapse
Exactly what I did to solve the bootloop after unlock. Worked with no problems after factory reset/data wipe. Just went back to the 4.2.1 I had on it.

With my Nexus 7, when unlocking the bootloader, it would automatically factory reset itself. The Nexus 10 doesn't appear to do this, but it does appear to be a required step regardless (I guess unlocking the bootloader does something that is only fixable with factory reset, for security reasons).
So as mentioned already, a factory reset should take care of things

thanks for the tip.i got something like that，i unlocked rooted the tablet and all was ok untill i went into system settings to update it via ota. after the ota had been downloaded succesfully it rebooted into recovery automatically but failed to update. then i couldnt get into the system any longer even after i flashed factory image using the toolkit in another thread.
i will try this when i get home，hope it can solve my problem too.
edit：done. thanks again for the tip
Sent from my ADR6425LVW using xda premium

here is the think, I unlocked nexus 10 oem lock then flashed with fastboot and original framware that google suggested for this tablet in fast boot everything goes right but stuck in logo x boot"I also tried 5.1 firmware "tablet reseted then i put the tablet to oem lock again but still same problem again i went to bootloader and again in recovery mode i chose Wipe and factory reset but still same problem. i put the power button 10s but no solution, any idea?

[Info] Guide to entering safe mode, bootloader, stock recovery

Yes, I know, everyone knows how to enter safe mode, bootloader, and recovery.
I found there are some inconsistencies to entering and using recovery depending on your which software you are running. In addition there are multiple ways of entering stock recovery.
Also I always see people asking this question because somehow the keypress order is not intuitive.
Entering Safe Mode
Tablet booted and running Android
Press/Hold Power button until power menu shows up
Tap/Hold Power off option
Choose OK to reboot in safe mode
Tablet powered down
Press/Hold Power button until Google screen shows up, RELEASE Power button
Press/Hold VolDn until Android has booted up
If successful, you will see Safe mode overlayed on bottom left of screen.
Entering Bootloader (ie fastboot mode)
Tablet booted and running Android
From adb
adb reboot bootloader
can also choose recovery from menu after bootloader comes up
From app
Use Quick Boot from Google Play
Tablet powered down
Power+VolDn while booting to enter bootloader
Release buttons after you see bootloader screen
Entering Stock Recovery
Tablet booted and running Android
From adb
adb reboot recovery
From app
Use Quick Boot from Google Play
Tablet powered down
Power+VolUp while booting to enter recovery
You can release buttons after you see Google on screen
When Stock Recovery starts you will see the Android fallen down screen
To bring up the Recovery menu
Power+VolUp to show recovery menu
Must be this sequence Press/Hold Power, THEN Press/Release VolUp, release Power
Within menu
VolUp to move up
VolDn to move down
Power to select
In addition, I found an inconsistency with JSS15J stock recovery that wasn't in the JWR66N recovery
While at the Android fallen down screen if you mistakenly press
VolUp
instead of
Power+VolUp
you will still get the Recovery menu.
However, VolUp will no longer function. It will instead become a toggle for switching between the Recovery menu and the Android fallen down screen
Android fallen down screen
VolUp to toggle recovery menu
Within menu
VolUp does not work since it toggles recovery menu
VolDn to move down
Power to select

sfhub said:
Entering Stock Recovery
Tablet booted and running Android
From adb
adb reboot recovey
Click to expand...
Click to collapse
Are you sure with this command. I think it must be => adb reboot recovery <= or am I wrong ???

pRo_lama said:
Are you sure with this command. I think it must be => adb reboot recovery <= or am I wrong ???
Click to expand...
Click to collapse
Sorry, typo, fixed.

i`m on completely stock JSS15Q and i cant get into stock recovery. When im trying i see "no command" and red exclamation mark on the laying robot. What should i do?

laska300 said:
i`m on completely stock JSS15Q and i cant get into stock recovery. When im trying i see "no command" and red exclamation mark on the laying robot. What should i do?
Click to expand...
Click to collapse
sfhub said:
Entering Stock Recovery
Tablet powered down
Power+VolUp while booting to enter recovery
You can release buttons after you see Google on screen
When Stock Recovery starts you will see the Android fallen down screen
To bring up the Recovery menu
Power+VolUp to show recovery menu
Must be this sequence Press/Hold Power, THEN Press/Release VolUp, release Power
Within menu
VolUp to move up
VolDn to move down
Power to select
Click to expand...
Click to collapse
Please see RED section

Does the presence or absence of the red exclamation triangle mean anything?

Wot does safe mode do?

Anderson2 said:
Does the presence or absence of the red exclamation triangle mean anything?
Click to expand...
Click to collapse
I don't remember if there are two images one with and one without the triangle. I think I've only seen the image with the red exclamation point.
I've never seen anything to indicate the red exclamation mark is something you need to pay attention to.
Now if you apply an update and there is an error, then that is something I would pay attention to.

LoVeRice said:
Wot does safe mode do?
Click to expand...
Click to collapse
It doesn't load the stuff you added.
It is similar to safe mode on a PC, used to diagnose whether the issue is in the stock ROM or is in something you introduced by installing some app.

I Have a probleme
since a bought TAB 3 10.1 and it's boot into safe mode i'v restart it and turrn it off the back on but it didn't go what should i do ?

This thread is about nexus 7.

sfhub said:
This thread is about nexus 7.
Click to expand...
Click to collapse
oh sorry i was panic so i searched in every thing

Bootloader
If none of that works, try the command with a dash "adb reboot-bootloader" Depends on your device sometimes, sometimes unplugging your device right after you enter this command will keep it from getting stuck at the boot logo screen. If that doesn't work, hold the power button to power device down and then boot it into recovery instead using the button combo. Then you can wipe cache & start all over again.

I'm not even able to get into Recovery. I can get to the bootloader, then I select "Recovery mode" and it shows the Google logo, but it never goes into recovery. I have let it sit at the Google logo for a couple of hours, and end up just holding down the power button to shut it down.
I have tried Skipsofts toolkit, as well as Wug's, to try to unlock the bootloader. This ends up with the device hanging at the "Unlock bootloader" screen after selecting "Yes". Again, I have left it in this state for well over an hour with no change.
Here's some info on my 2013 Nexus 7:
KitKat 4.4.4
Never rooted
Never unlocked bootloader
HW version rev-e
Bootloader version FLO-04.02
I suspect my Nexus knew I was supposed to go on travel next week and is faking sick.
Any help would be appreciated. Thanks.

Hi guys i have a google nexus 5 and it is locked state. It is getting booted again and again but it jiust reaches google logo and again restarts. Safe boot is also enabled so i cant enter in recovery mode also. Please help me ASAP.

[Q] Can I root from a bugged nexus 7?

Before I begin I must say I've never used an android device in my life so this is all completely new to me. The only experience I've had was rooting and installing CM or something similar to an iphone 3gs a few years ago.
I'm aware a lot of people are having problems with their nexus 7 hanging at the animated rainbow-colored X screen. I've seen the suggestion to hold power and vol up/down to get to the restore factory default settings - but that doesn't show. Mine just shuts off. I've tried going to the bootloader screen via power+vol up/down while the machine was off but nothing ever happens. The nexus just stays powered off. Also, if I hold power while it's hanging on the rainbow X, nothing happens - it doesnt even shut off. In order to turn it off I have to hold power+vol up/down.
I have not rooted or installed any ROMs on this android yet. But I do want to. I am curious if I can somehow root and flash my nexus.
If someone can point me in the right direction on how to start this from a basically dead nexus 7, please enlighten me. I've read through a few instructional threads so far but they all start off with the nexus 7 being able to fully start.
Please advise.
Thanks!
Also, pic of device manager w/ error msgs from n7:
(can't post links with under 10 posts on account, so i broke up the link. remove the asteriks (*) and replace with periods.
i42*tinypic*com/2lnj0i8*png

[Info] Guide to entering safe mode, bootloader, stock recovery
Go into recovery and choose wipe data factory reset.

sfhub said:
[Info] Guide to entering safe mode, bootloader, stock recovery
Go into recovery and choose wipe data factory reset.
Click to expand...
Click to collapse
Thanks for the link. I tried entering safe mode, didn't work
- Press/Hold Power button until Google screen shows up, RELEASE Power button
- Press/Hold VolDn until Android has booted up
The device doesn't even boot up in safe mode. Still hangs on the rainbow x.
Got into bootloader using these instructions while n7 off:
- Power+VolUp while booting to enter recovery
- You can release buttons after you see Google on screen
selected Recovery.
It turned off then on, showed the Google screen, and now shoes an android fallen over with "No command." shown underneath and am continuing..
edit: wiped and restarted. can now finally root. thanks bud.

Problem with TWRP

I am trying to install a /e/ OS in an old, but otherwise fully functional, Nexus 4 phone. I followed the steps described in
gitlab.e.foundation/e/wiki/en/wikis/device/mako/install. I have successfully unlocked the device, and I can reboot into the bootloader by means of adb reboot bootloader from my Linux system, when the Nexus 4 is connected to it via a USB cable. So far so good.
The next step consists of installing a custom recovery. I therefore went to twrp.me to download a TWRP image for this device - LG mako. I downloaded the most recent one, and copied it to the Nexus 4 with the following commands
adb reboot bootloader
fastboot flash recovery twrp-x.x.x.x-mako.img​
where x.x.x.x represents the version number of the image. When I do this I see a fleeting message at the bottom of the Nexus 4 bootloader screen, to the effect that the image has been copied. I then press on the Power button, and the Nexus 4 reboots normally. When the Nexus 4 is up and running, I use the
adb reboot recovery​
command from my Linux box (I never disconnected the USB cable) to reboot in recovery mode. The Nexus 4 goes blank for a few seconds, then I get the twirly boot up animation, and finally I get an Android icon at the center of an otherwise black screen. The Android is lying on its back, with a lid open on its torso, and a red triangle with an exclamation mark in it. Things stay like that for a minute or two, and then the system reboots spontaneously in normal mode. I end up again with a functional Android device. That's good, but the recovery mode does not seem to be working.
The thing is, I have tried with ten different twrp images for Nexus 4 mako from twrp.me, and the behavior has been exactly the same with all of them. I am therefore beginning to wonder if I am doing something systematically wrong here?
I will try with all the different twrp images, but if somebody has any ideas as to what is going on, and how to solve the problem, their feedback would be much appreciated.

I think you are missing this part:
Note many devices will replace your custom recovery automatically during first boot. To prevent this, use Google to find the proper key combo to enter recovery. After typing fastboot reboot, hold the key combo and boot to TWRP. Once TWRP is booted, TWRP will patch the stock ROM to prevent the stock ROM from replacing TWRP. If you don't follow this step, you will have to repeat the install.
Click to expand...
Click to collapse
Key combo for mako is "power + volume down"
Nitin

Once you flash TWRP, immediately boot directly to it - while still in the bootloader menu, use volume buttons to highlight the Recovery mode and press the power button. If you don't do that, TWRP will be overwritten by the stock recovery (as you've already experienced).

nitin.chobhe said:
I think you are missing this part:
Key combo for mako is "power + volume down"
Nitin
Click to expand...
Click to collapse
OK, thanks; I certainly missed it. I'll try, but It might be a tricky undertaking , for the volume up/down button in this phone is difficult to get to work.

n0b0dy666 said:
Once you flash TWRP, immediately boot directly to it - while still in the bootloader menu, use volume buttons to highlight the Recovery mode and press the power button. If you don't do that, TWRP will be overwritten by the stock recovery (as you've already experienced).
Click to expand...
Click to collapse
Thanks. However, I can see no relevant entry in the bootloader menu. The entries that it displays are the following:
Fastboot Mode
Product_Name - mako
Variant - mako 8GB
HW Version - rev_11
Bootloader Version - MAKOZ30f
Baseband Version - M9615A-CEFWMAZM-2.0.1701.07
Carrier Info - None
Serial Number - 01cxxxxxxx
Signing - production
Secure Boot - enabled
Lock State - unlocked

ijkabc said:
Thanks. However, I can see no relevant entry in the bootloader menu. The entries that it displays are the following:
Fastboot Mode
Product_Name - mako
Variant - mako 8GB
HW Version - rev_11
Bootloader Version - MAKOZ30f
Baseband Version - M9615A-CEFWMAZM-2.0.1701.07
Carrier Info - None
Serial Number - 01cxxxxxxx
Signing - production
Secure Boot - enabled
Lock State - unlocked
Click to expand...
Click to collapse
You have to use volume button to see the options and power button to select the option.
Refer this video: https://www.youtube.com/watch?v=e0FVHFg6t2I
From time 2.53 to 3.53 to understand how it works. Note that the video is for hardware reset; so do not follow the next steps. I linked the video for you to understand how the bootloader mode works and how you can select the options. You need to select option "Recovery".
Nitin

ijkabc said:
Thanks. However, I can see no relevant entry in the bootloader menu. The entries that it displays are the following:
Fastboot Mode
Product_Name - mako
Variant - mako 8GB
HW Version - rev_11
Bootloader Version - MAKOZ30f
Baseband Version - M9615A-CEFWMAZM-2.0.1701.07
Carrier Info - None
Serial Number - 01cxxxxxxx
Signing - production
Secure Boot - enabled
Lock State - unlocked
Click to expand...
Click to collapse
Press the volume button, Fastboot mode will switch to a different mode, keep pressimg until you see the recovery one and press the power button to boot.

Thanks everybody. The problem was that my dodgy volume button led me to think that Start was the only option in the bootloader menu. After a few attempts I was able to coax it into changing from Start to Recovery, and from that moment onward the installation of the /e/ OS proceeded without any glitches.

Problems with a Factory reset on a Samsung Nexus 10 tablet

Hello,
Here are the details on my Samsung Nexus 10 tablet...
Product Name: manta
Variant: wifi
H/W Version: 8
Bootloader Version: mantamf01
Carrier Version: none
Serial Number: r3201042hze
Lock State: locked
Reboot Mode Flag: none
OS: 5.?
My tablet was running really slow, then one day the tablet would not get past the "Google" banner/logo. So I cannot delete my Google ID from the tablet. I can do the three finger startup (power button, volume up, volume down) and get into the "Recovery Mode", which is as far as I can get. I have tried the power button and volume up, expecting to see the android dude with the "red triangle". I cannot see the little dude with the red triangle.
Any ideas on how a can perform a factory reset on this tablet?

So you can’t factory reset through recovery? What happens when try?

ConstantlyCurious said:
Hello,
Here are the details on my Samsung Nexus 10 tablet...
Product Name: manta
Variant: wifi
H/W Version: 8
Bootloader Version: mantamf01
Carrier Version: none
Serial Number: r3201042hze
Lock State: locked
Reboot Mode Flag: none
OS: 5.?
My tablet was running really slow, then one day the tablet would not get past the "Google" banner/logo. So I cannot delete my Google ID from the tablet. I can do the three finger startup (power button, volume up, volume down) and get into the "Recovery Mode", which is as far as I can get. I have tried the power button and volume up, expecting to see the android dude with the "red triangle". I cannot see the little dude with the red triangle.
Any ideas on how a can perform a factory reset on this tablet?
Click to expand...
Click to collapse
The key combo (power and both volume buttons) puts the device in bootloader (fastboot) mode.
From there when you select the recovery option (using the volume keys) and select it (using the power button), it should boot into recovery.
The recovery screen will show the crashed Android dude.
Then press the power and volume up (the one further away from the bower button) to toggle the recovery menu.
If you do not see the crashed Android dude, then you did not boot into recovery, instead you are stuck in limbo.
It is possible your emmc is dead, if so no easy fix.​
---
With all that said, it has been a while since either of mine have been locked or on stock Android.
Since you can boot into bootloader (fastboot), if you have platform-tools setup on your computer, you can should be able to connect to it in fastboot mode.
Then from the command line on you computer you could try running fastboot -w that will wipe the cache and userdata partitions.
With updates to platform-tools, fastboot might not be fully compatible with older devices.
I am not sure if the fastboot format command will recognize manta properly.
You will need to unlock it first but, another option would be to flash the last full factory image from Google.
The default flashall script will wipe data on install.
When you unlock the bootloader, it will also wipe userdata.
---
Factory Images for Nexus and Pixel Devices
developers.google - [WebSite] - Link
SDK Platform Tools
developers.google - [WebSite] - Link
Google Nexus 10
[xdaForum] - Link
---
Cheers.

Arealhooman said:
So you can’t factory reset through recovery? What happens when try?
Click to expand...
Click to collapse
Sounds more like it is not booting into recovery for some reason. ¯\_(ツ)_/¯
Cheers.

Nothing happens, when I get into the recovery menu, I should see a red triangle in the android dude, no red triangle.
Arealhooman said:
So you can’t factory reset through recovery? What happens when try?
Click to expand...
Click to collapse

I do not know your device, but doesn’t the recovery menu usually have options.

Arealhooman said:
I do not know your device, but doesn’t the recovery menu usually have options.
Click to expand...
Click to collapse
Hello,​
Here is what I have found on how to do a factory reset. I cannot get the red triangle in the android robot.
​Google Nexus 10​Factory Reset Instructions (Recovery Mode)​
If your tablet is on, power it off.
Press and hold Volume Up + Volume Down + Power until the device powers on. You should see an image of an Android lying on its back.
Press Volume Down twice, until the screen says "Recovery mode."
Press Power to restart into "Recovery mode." You should see an image of an Android with a Red triangle after a few minutes.
While holding down Power, tap Volume Up
Use the volume keys to scroll to "wipe data/factory reset" and press Power to select it
Scroll down to "Yes - erase all user data" and press Power to select it