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[Q] Samsung Nexus S not booting

Hi I was routing my phone and trying to downgrade the OS. It was already unlocked.
I typed the following command
sudo ./fastboot flash recovery recovery-clockwork-5.0.2.0-crespo.img
it completed successfully. Post which I restarted and wanted to boot into recovery mode. However it got stick in the Google logo and pulled out the battery and tried to restart it. But it will not start.
I tried again and again and there is nothing happening.
What do I do? Please help me.

krish.ubuntu said:
Hi I was routing my phone and trying to downgrade the OS. It was already unlocked.
I typed the following command
sudo ./fastboot flash recovery recovery-clockwork-5.0.2.0-crespo.img
it completed successfully. Post which I restarted and wanted to boot into recovery mode. However it got stick in the Google logo and pulled out the battery and tried to restart it. But it will not start.
I tried again and again and there is nothing happening.
What do I do? Please help me.
Click to expand...
Click to collapse
Will it go into boatloader mode?
Vs Nexus S4G using tapatalk2

[Q] N5 Won't Start After Ota Update To 5.1

I recieved the ota update on my device this afternoon, and downloaded and installed it. Installation appeared to be successful, and device rebooted and went through the app optimization. I then recieved an error "unfortunately, system ui stopped" and a blank screen. I attempted to restart several times and the device boots to a blank (black screen everytime). I also restarted in safe mode with the same result (safe mode does appear at the bottom of the screen). I face also tried a factory wipe/rested with the same result.
Is there anything else I can try?

djdragan said:
I recieved the ota update on my device this afternoon, and downloaded and installed it. Installation appeared to be successful, and device rebooted and went through the app optimization. I then recieved an error "unfortunately, system ui stopped" and a blank screen. I attempted to restart several times and the device boots to a blank (black screen everytime). I also restarted in safe mode with the same result (safe mode does appear at the bottom of the screen). I face also tried a factory wipe/rested with the same result.
Is there anything else I can try?
Click to expand...
Click to collapse
Have you tried flashing factory images?

Elluel said:
Have you tried flashing factory images?
Click to expand...
Click to collapse
I found this tutorial - http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701
I am able to put the device in fastboot mode, but I am stuck on trying to unlock the bootloader. I am not able to see the device when I use the "fastboot devices" command. I am also not able to enable USB Debugging as I cannot get the phone to startup.

djdragan said:
I found this tutorial - http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701
I am able to put the device in fastboot mode, but I am stuck on trying to unlock the bootloader. I am not able to see the device when I use the "fastboot devices" command. I am also not able to enable USB Debugging as I cannot get the phone to startup.
Click to expand...
Click to collapse
USB Debugging is irrelevant. It is ONLY used for adb while booted into Android, NOT for fastboot while in the bootloader nor adb while in recovery.
Do you have drivers correctly installed? http://forum.xda-developers.com/showthread.php?t=2588979

Phone Stuck in Bootloop

Hello,
Recently I flashed a CWM file for 'Lava Iris X1' found on this site for my android 'Lava Iris X1 Grand'. Now my phone is stuck in a bootloop. For some reason i cant enter recovery mode even before my phone was stuck in a bootloop. I am not sure whether my phone has USB debugging enabled or not. I rooted my android with KingRoot before all this happened. I have downloaded your Minimal Adb and Fastboot but it cant find my device.
Overall problem:
1) Phone Stuck in Bootloop
2)USB debugging enabled ? Not sure
3) Can't enter recovery mode
4) ADB wont find my device
Note : When I used Minimal Adb and Fastboot, I typed 'fastboot devices' and some numbers appear:
0123456789ABCDEF devices
but when I used the command 'adb devices' my device is not shown:
List of devices attached
I have a backup at my phone through the Flashify app but since recovery mode cant show I cant recover it. I also need a some flash recovery images.
Please help me out here. I don't know what else to do.
Thank You in advance

Fixed
Nevermind guys, i was able to get my phone out of bootloop using SP Flash Tool.
Now all I have to do is restore IMEI.

Marticco said:
Nevermind guys, i was able to get my phone out of bootloop using SP Flash Tool.
Now all I have to do is restore IMEI.
Click to expand...
Click to collapse
Can you please tell me how did you do that.. i am also in the same situation.

Stuck at "...unlocked...booting now..." Bricked?

Solved.
AL10, NXT-C900B133, rescue0.3, NEXT
I unlocked bootloader, installed TWRP, and rooted using SuperSU with no problem by following these directions:
http://forum.xda-developers.com/mate-8/general/guide-unlock-bootloader-root-install-t3301371
I then formatted data using TWRP wipe, then tried to install Stock Rooted No Encrypted Boot from
http://forum.xda-developers.com/mate-8/development/rom-stock-rooted-encrypted-boot-t3303606
The phone never gets past "...unlocked...booting now...." (I did not install insecure_boot because I had trouble finding it---it is not in Mate 8 Android Development, only in Mate 8 Original Android Development.)
I can get to fastboot and to the Huawei recovery in Chinese (which doesn't work---wifi downloading stops with an exclamation point), but TWRP is gone, and I can't get it back by reflashing it. I've tried HiSuite recovery, unbricking using the Italian knife following these instructions:
http://forum.xda-developers.com/mate-8/general/unbrick-updating-to-b321-t3375934
with various roms, and I've tried force flashing an UPDATE.APP from /sdcard/dload. No joy.
I caused the problem by installing a B331 rom when I was at B133—dyslexic much? Once I got TWRP back, flashing a B180 rom worked fine.
The difficulty was getting TWRP back. To do that, I flashed the following files using fastboot—it may be overkill:
TWRP-2.8.7.0-ENG.img,
insecure_boot_b331.img,
and the files in
L29Fastboot.rar.
TWRP

Hey ho!
I had exactly the same problem yesterday.
I figured out my system only was able to boot when I hold down [vol-]&[power].
Then the "not trusted message" had a few more lines and the phone booted up.
When it's up again, you can use adb to reboot to fastboot: adb reboot bootloader
You can also try to go directly to recovery if you alrteady flashed it: adb reboot recovery
From threre you can try again.
btw: I had to use a complete different TWRP version. 3.x somewhat. I think it was from here: http://forum.xda-developers.com/mate-8/development/recovery-twrp-huawei-mate-8-t3298567
Info: I was NOT able to use [vol+]&[power] for Recovery, eRecovery or anything else. I was just stuck.
I hope it helps.

I recommend after getting your device back on track to use twrp to make a recovery on your microsd card. That way u have a sure chance of getting bwck to working order

Same problem here, but when I try to flash recovery or boot image using fastboot, I get the message "FAILED <Remote: command not allowed> ".
Any idea?

iAngus said:
Same problem here, but when I try to flash recovery or boot image using fastboot, I get the message "FAILED <Remote: command not allowed> ".
Any idea?
Click to expand...
Click to collapse
Make sure you have turned on debugging mode and that your device is listed with "fastboot devices".

Make sure you have turned on debugging mode and that your device is listed with "fastboot devices".
Click to expand...
Click to collapse
The debugging mode is on since I unlocked and rooted the phone and the device is listed in "fastboot devices".

iAngus said:
The debugging mode is on since I unlocked and rooted the phone and the device is listed in "fastboot devices".
Click to expand...
Click to collapse
you could fix the same problem I have is not to do help me

Need help regarding rooting!

Hello!
I tried to root my Micromax E484 through adb and fastboot. It flashed TWRP Recovery but upon giving the command - fastboot boot recovery.img, it gave an error - FAILED : UNKNOWN COMMAND
After this, my phone is not booting up! Upon starting the phone, TWRP logo appears then some lines written in red color but within a flash, the device restarts! And this keeps on happening continuously.
Can you pls. tell what is this problem? And what is its solution? It my phone bricked? Pls. help!

techie_vintage said:
Hello!
I tried to root my Micromax E484 through adb and fastboot. It flashed TWRP Recovery but upon giving the command - fastboot boot recovery.img, it gave an error - FAILED : UNKNOWN COMMAND
After this, my phone is not booting up! Upon starting the phone, TWRP logo appears then some lines written in red color but within a flash, the device restarts! And this keeps on happening continuously.
Can you pls. tell what is this problem? And what is its solution? It my phone bricked? Pls. help!
Click to expand...
Click to collapse
The problem is the command.
The command to flash recovery is
fastboot flash recovery path-to-recovery.img.
Write fastboot flash recovery and then drag and drop recovery.img and the path will come itself.

Bewildered Wolf said:
The problem is the command.
The command to flash recovery is
fastboot flash recovery path-to-recovery.img.
Write fastboot flash recovery and then drag and drop recovery.img and the path will come itself.
Click to expand...
Click to collapse
Thanks for the prompt reply!
But, my phone is not booting up!
Pls. chk the image I have attached! This is the error it displays for a second or two on bootup and then restarts and then again shows this screen and then restarts! This cycle keeps taking place continuosly!
So, what can I do now? Pls. guide!

techie_vintage said:
Thanks for the prompt reply!
But, my phone is not booting up!
Pls. chk the image I have attached! This is the error it displays for a second or two on bootup and then restarts and then again shows this screen and then restarts! This cycle keeps taking place continuosly!
So, what can I do now? Pls. guide!
Click to expand...
Click to collapse
Here : https://www.youtube.com/watch?v=Rs4zcryNt5Y
I hope it helps.

Bewildered Wolf said:
Here : https://www.youtube.com/watch?v=Rs4zcryNt5Y
I hope it helps.
Click to expand...
Click to collapse
Thanks for the help! But it didn't work! As I am unable to do anything on my phone! But, I tried flashing custom ROM through SP Flash tool but that too of no use as it doesn't flast at all! The process doesn't start and the problem remains the same! It's the same error (attached in my previous post) which it shows and that too for a second only and then automatically restarts! I mean it's entering TWRP but then shows that error and restarts! I can't do anything else!
Any other solution pls.?