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Softbricked Nexus S

Hi, I have unrooted Nexus somehow its not booting up no just shoing google Logo. I can only enter in dast boot mode and bootloader is locked hence can not load a new rom to it. Tried to unlock the loaded but unable to do so. Used most of the tools in the forumn but sill no success. Its still not boots into android
Any help will be appritiated.

Can you enter recovery? Like stock recovery or clockworkmod. You should be able to.
If you have stock recovery navigate to it using bootloader, then to active the menu press both the power button and the volume keys ( sorry I don't know which one). Wipe data and factory reset. Select it. BUT THIS WILL CLEAR ALL DATA.
If you have clockworkmod again boot into it like above and select wipe data factory reset. This will not delete you data.
If you have TWRP you can for the same as clockworkmod. But go to menu "wipe" and select wipe data factory reset.
Hope this helps,
UselessSniper001

Have you tried Wug's Nexus Toolkit? There's an option in the program for this type of thing. It'll flash full stock on your phone but at least it'll be working again, and from there you can flash CWM and root the phone as usual.
It's in the Nexus S Android Development forum, sorry I can't post links yet since I don't have the 10 posts needs.
Regards,
Bomboholic

scorpionzzz said:
Hi, I have unrooted Nexus somehow its not booting up no just shoing google Logo. I can only enter in dast boot mode and bootloader is locked hence can not load a new rom to it. Tried to unlock the loaded but unable to do so. Used most of the tools in the forumn but sill no success. Its still not boots into android
Any help will be appritiated.
Click to expand...
Click to collapse
I am 101% sure that you are missing something while unlocking either the drivers or the fastboot files.
Otherwise nothing can stop you from unlocking. Finally when you unlock, flash the factory image via fastboot and then proceed again towards rooting and customs. :good:

can u please tell me what method you are using to unlock boot loader?
follow these steps:
fastboot oem unlock
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader
fastboot flash radio radio.img
fastboot reboot-bootloader
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lock

[Q] Tecno P5 Stuck in Boot Loop And Recovery Not Accessible

I used Recovery-Tools to flash TECNO-P5_130916__recovery_140106-193223.img onto my phone. The process completed and I was prompted to boot into recovery. The reboot did not complete.
I can get into the boot menu (Volume Up + Power), but when I select Recovery mode or Normal mode the phone gets into a boot loop. Fastboot mode woks and I can connect from Windows 7.
The problem in Fastboot is that I cannot flash a ROM since the bootloader is locked (I get the error "Security deny - Err:0x2017").
Is there a tool that can either unlock the bootloader or reset the phone to factory settings so it can boot normally?
I already tried fastboot oem unlock and it just hangs at "..." No "fastboot oem ...." commands work
fastboot devices shows "mt6572v1_phone fastboot"

can I fastboot boot twrp to backup the original recovery ?

Or the distributed boot / system / data (rom) for restoration?
I figured to HTCDEV unlock to allow fastboot to write to recovery
and then fastboot boot twrp to backup whats there before overlaying it.

why not try it?
https://forum.xda-developers.com/showthread.php?t=2798853

fuzzynco said:
Or the distributed boot / system / data (rom) for restoration?
I figured to HTCDEV unlock to allow fastboot to write to recovery
and then fastboot boot twrp to backup whats there before overlaying it.
Click to expand...
Click to collapse
Yes.
Captain_Throwback said:
One thing to note is that you CAN fastboot boot TWRP on this device, so if you don't want to overwrite stock recovery, you don't have to
Click to expand...
Click to collapse

Just make sure to do that from the bootloader menu, not the download mode. Download didn't work for me, command line in Windows was stuck on booting and the download mode said finished flashing, that's it. Once rebooted to the bootloader menu everything was fine. That's how I backed my original recovery as well. You'll probably need to unlock the bootloader on htcdev first though, at least that's what I did.

BolecDST said:
Just make sure to do that from the bootloader menu, not the download mode. Download didn't work for me, command line in Windows was stuck on booting and the download mode said finished flashing, that's it. Once rebooted to the bootloader menu everything was fine. That's how I backed my original recovery as well. You'll probably need to unlock the bootloader on htcdev first though, at least that's what I did.
Click to expand...
Click to collapse
Yes, I figured that, (htcdev.com bootloader unlock).
Thanks for the pointer, I really don't know which mode is for what ...
I think bootloader mode is for direct fastboot flashing
fastboot flash <partition> <file>
or fastboot boot <file>
and download mode & RUU mode is for things packaged
like an RUU. fastboot flash zip <file>
fastboot oem <--->

fuzzynco said:
Yes, I figured that, (htcdev.com bootloader unlock).
Thanks for the pointer, I really don't know which mode is for what ...
I think bootloader mode is for direct fastboot flashing
fastboot flash <partition> <file>
or fastboot boot <file>
and download mode & RUU mode is for things packaged
like an RUU. fastboot flash zip <file>
fastboot oem <--->
Click to expand...
Click to collapse
Recovery is to be flashed in download mode as has been on the HTC 10 the case. In fact download mode can be viewed at as fastboot mode of the phone.
Sent from my htc_pmeuhl using XDA Labs

Left a note here.
My first-batch U11 can be booted to twrp with "fastboot boot twrp-blahblah.img" under bootloader menu (I wish I didn't remember it wrong)
But it can't be done after it came back from repair (no power issue with unknown reason), which motherboard had been replaced and updated to Oreo already.
Anyway, it seems that stock-recovery backup is not required since there's reliable source of stock-recovery which inside the OTA file.

Cannot boot into TWRP after flashing it

I have unlocked bootloader.
I enabled adb debugging from developer settings.
1. adb reboot bootloader
2. fastboot flash recovery twrp.img (tried all of those: peter's, from twrp website, from link on lineageos official thread)
Up to this point everything works fine
3A. fastboot reboot then hold PWR+VOL_UP
3B. Hold PWR+VOL_UP
And at this step I am seeing fastboot logo plus "Unlocked" label at bottom (while in regular fastboot I don't see Unlocked label)
My best guess that something went wrong while booting into twrp, and it fallbacks to fastboot. However I have no clue how to check what's wrong, where to check any logs etc.
Any help appreciated

My advice would be to flash recovery again and manually reboot into recovery and not using fastboot reboot
If this doesnt work flash rom again via bootloader....Then flash recovery....Do Not use fastboot reboot....
Manually holding buttons go into recovery

-Stuck Fastboot and Locked Bootlader Problem and Solution-

So, Iwas using Havoc Os 3.8 on my realme 5i, but I wanted to lock bootloader again, then I entered fastboot mode and locked bootloader, but I stucked in fastboot mode, It looped. Could not enter recovery or system. Only fastboot mode, because bootloader is locked I couldnt flash anything. I tried fastboot flashing unlock command but it did not work.
But solution was very easy, fastboot was not actually fastboot, everytime I power off device and power up there was not fastboot writing and robot icon, just directly fastboot itself. So actually it is fake fastboot, you just need to use volume buttons and select reboot to bootloader option, once device reboot you will see now fastboot- robot icon then fastboot itself, now you can unlock device with "fastboot flashing unlock_critical" command.

First, power off. Then wait for couple of minutes then start fastboot again.