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[Q] OPO has no OS and Bootloader is Locked

So two days ago my phone started to act up, first it rebooted while I was in the Play Store for no reason then when it rebooted it kept saying "Lockscreen has stopped working" and wouldn't stop doing that. I tried pulling up a backup I made on TWRP (Rooted) but it just did the same thing and wouldn't let me open the settings app when I had the chance. Then I did a Factory Reset but it just made things worse, it booted it up but when I had to choose a language it rebooted and kept doing it. After that I did a full wipe and went I tried to reboot it said I had no OS and now I'm stuck with just TWRP. And I have just found out earlier today that my bootloader is locked. So what could I possibly do? Thank you in advance for those who are able to help.

Zallus said:
So two days ago my phone started to act up, first it rebooted while I was in the Play Store for no reason then when it rebooted it kept saying "Lockscreen has stopped working" and wouldn't stop doing that. I tried pulling up a backup I made on TWRP (Rooted) but it just did the same thing and wouldn't let me open the settings app when I had the chance. Then I did a Factory Reset but it just made things worse, it booted it up but when I had to choose a language it rebooted and kept doing it. After that I did a full wipe and went I tried to reboot it said I had no OS and now I'm stuck with just TWRP. And I have just found out earlier today that my bootloader is locked. So what could I possibly do? Thank you in advance for those who are able to help.
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ok did you try to unlock your bootloader. did you try and sideload a rom?

playya said:
ok did you try to unlock your bootloader. did you try and sideload a rom?
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Yes I have and It does not do anything, I tried unlocking it manually and with a toolkit but no results. Also I have pushed CM11s to the phone and tried to flash it but no luck.

Zallus said:
Yes I have and It does not do anything, I tried unlocking it manually and with a toolkit but no results. Also I have pushed CM11s to the phone and tried to flash it but no luck.
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I was stuck in the same situation, unlocking via fastboot just rebooted and did nothing, however I managed to unlock the bootloader by flashing this in recovery...
http://forum.xda-developers.com/attachment.php?attachmentid=2859187&d=1405749374

installing a rom or factory reset doesn't work

the problem started when the phone started rebooting itself every minute and effectively going into reboot loop , I tried the following
1-factory reset , the reset is done but after the restart it is like nothing has been done , the same apps the same data are there and of course the problem is still there
2-Wiped dalvik cache, wiped cache and factory reset from cwm recovery , the same problem, like I have done nothing ,, the rom is still there with all the apps and data , still reboots itself.
3-Installed a stock rom and a modded rom using BOTH Odin and CWM still this freakin device is freezed on the old rom and wont change anything,
can anyone suggest a solution ?
Thanks a lot

mosh11 said:
the problem started when the phone started rebooting itself every minute and effectively going into reboot loop , I tried the following
1-factory reset , the reset is done but after the restart it is like nothing has been done , the same apps the same data are there and of course the problem is still there
2-Wiped dalvik cache, wiped cache and factory reset from cwm recovery , the same problem, like I have done nothing ,, the rom is still there with all the apps and data , still reboots itself.
3-Installed a stock rom and a modded rom using BOTH Odin and CWM still this freakin device is freezed on the old rom and wont change anything,
can anyone suggest a solution ?
Thanks a lot
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Sadly, it sounds like the end of the line for your tab bud. Keep trying but I'd start looking for something new. Good luck.

CSP III said:
Sadly, it sounds like the end of the line for your tab bud. Keep trying but I'd start looking for something new. Good luck.
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Oh Crap! What is damaged then? Is it a hardware issue?

Nexus 5 not starting

Urgent help reqd
randomly my nexus 5 restarted
google came on screen and now only those four animated circles are showing up and the phone doesnt go further
went in bootloader but cant wipe cache, cant format, or anything else from there.
usb debuggng must be off as far as i remember
trying to flash through sdk manager. have downloaded image. but stops at "waiting for device" in cmd and it doesnt go any further than that. even tried doing it manually through cmd.
when the phone is connected it is showing the drivers but it isnt installng and can see the yellow exclamation.
manually downloaded the drivers and tried installing manually but shows drivers are up to date.
uninstalled driver and reinstalled but same issue. it is connected to usb 2.0.
now how do i get it to work?
I have tried all the options i could search for on this forum but none of them solved my issue.

Is the bootloader unlocked?

How do i check that?

Ok got it
It is locked
How do i unlock?

I checked some unlocking bootloader threads but they all require usb debugging to be on.
My phone is not starting at all so i cannot do that
How do i go about it now

Tried nexus root toolkit. It isnt detecting the device.

Unlocking will wipe you device.
Google themselves have a guide on how to flash, not sure why you are using toolkits.
Also, you will wipe your device, if you haven't already. Make sure you have the right drivers, make sure you get the device to come up under "fastboot devices"

Already tried all methods mentioned by google or xda.
If you read my initial post my phone is not getting detected as well but shows installing drivers when connected but the installation fails.

Manually install the correct drivers.

Tried that but i get the error that you already have latest drivers. But its not detecting the phone

Try removing the drivers and reinstalling
Also, try different USB ports and cables.

Did all of that a number of times. Still no luck

Other phones are getting connected and detected just fine.

useruser12 said:
Urgent help reqd
randomly my nexus 5 restarted
google came on screen and now only those four animated circles are showing up and the phone doesnt go further
.
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Click to collapse
Hi all, i have a similar problem
this morning my n5 boots into "optimizing apps", but stops when reach around 15/20 apps and reboot (3 or 4 times)...
Now, only keeps in android animation like useruser12.
I can see my data in TWRP, battery 95%...
I wipe cache/dalvik... nothing
I reflash the kernel (ElementalX 6.17), still nothing
Any ideas?
PS: latest news. After make a backup, I made a factory reset and restore a system-boot-cache partition from old backup. Now the phone boots but i hate lose all my data xD. I want try to solve my problem using my "corrupted" backup for avoid losing data. If that fails, I can always restore this functional backup. Any ideas again?

Used the nexus root toolkit.managed to unlock bootloader but immediately the device reboots and goes into the bootloop again.
Tried the flash stock + unroot function as well which detected my factory image and everything went smooth till it came back to unlocking the bootloader and rebooting the device after that and again went into the bootloop
Though i have installed the drivers, on reboot windows 7 automatically starts installing the mtp usb device driver but fails. Manually downloaded the drivers and installed as well.
Still its not worked and whatever i do it comes back and get stuck at the bootloop.
Any expert can give a solution? Thanks

After unlocking the bootloader, does the bootloader relock when the phone is rebooted? If it does, the memory chip is defective.

Phone doesnt reboot completely.goes into a loop after the google logo and doesnt go further.
If i switch off the phone midway here without it booting up and then restart the bootloader then its locked again.
But what i read was that the process of complete reboot needs to finish and i need to turn on usb debugging. So is it because of that the bootloader locks again?
Anyways, this what im facing

Dalamar666 said:
Hi all, i have a similar problem
this morning my n5 boots into "optimizing apps", but stops when reach around 15/20 apps and reboot (3 or 4 times)...
Now, only keeps in android animation like useruser12.
I can see my data in TWRP, battery 95%...
I wipe cache/dalvik... nothing
I reflash the kernel (ElementalX 6.17), still nothing
Any ideas?
PS: latest news. After make a backup, I made a factory reset and restore a system-boot-cache partition from old backup. Now the phone boots but i hate lose all my data xD. I want try to solve my problem using my "corrupted" backup for avoid losing data. If that fails, I can always restore this functional backup. Any ideas again?
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Click to collapse
Lucky that you could do a factory reset. I wasnt even able to do that from the bootloader.

useruser12 said:
Lucky that you could do a factory reset. I wasnt even able to do that from the bootloader.
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Sorry, i did it via TWRP.

If the bootloader relocks itself upon reboot, it's the memory chip that is damaged.

[SOLVED] Constant reboot, need urgent help!

Hey guys,
I have encountered a serious problem on my device. Today I rebooted my phone once and it has just stuck on the samsung logo. Then the phone began to reboot without ending....It could not just start. With the help of TWRP I have made a full wipe and tried to reinstall my actual firmware Superman 1.10.5, but I always stuck at 25%, the phone did not respond to any actions. I even tried to flash the stock 4-file firmware with Odin, but it did not help, the phone constantly reboots. Sometimes it manages to boot to the stage where the sign "installation of applications" appears, but a while later it stucks again and reboots. Please, help me to solve the issue, because I am begininng to think that it would be unpossible to recover the phone. I am only able to enter the download mode or recovery, anything else does not work.
Thanks....

AuroraLX said:
Hey guys,
I have encountered a serious problem on my device. Today I rebooted my phone once and it has just stuck on the samsung logo. Then the phone began to reboot without ending....It could not just start. With the help of TWRP I have made a full wipe and tried to reinstall my actual firmware Superman 1.10.5, but I always stuck at 25%, the phone did not respond to any actions. I even tried to flash the stock 4-file firmware with Odin, but it did not help, the phone constantly reboots. Sometimes it manages to boot to the stage where the sign "installation of applications" appears, but a while later it stucks again and reboots. Please, help me to solve the issue, because I am begininng to think that it would be unpossible to recover the phone. I am only able to enter the download mode or recovery, anything else does not work.
Thanks....
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Really sad to hear that story mate. First things first, I assume your BL version is matching with the firmware your flashing right. And when you go to TWRP, can you see /system and /data partition from the mount menu? If not, you have to perform a factory reset. I had issue like that with my Galaxy S7 and usually factory reset(not wiping) helped me with that situation. Since your system can boot up, but crashes after awhile, I do suspect that some of your partition might be corrupted(at least its what happened to me). So trying factory reset can be a good bet for you.
And... I think you have to provide more information with which variant you are using, and your BL version, TWRP version too, solve the problem quicker. Hope this information helps.

CenteaOSD said:
Really sad to hear that story mate. First things first, I assume your BL version is matching with the firmware your flashing right. And when you go to TWRP, can you see /system and /data partition from the mount menu? If not, you have to perform a factory reset. I had issue like that with my Galaxy S7 and usually factory reset(not wiping) helped me with that situation. Since your system can boot up, but crashes after awhile, I do suspect that some of your partition might be corrupted(at least its what happened to me). So trying factory reset can be a good bet for you.
And... I think you have to provide more information with which variant you are using, and your BL version, TWRP version too, solve the problem quicker. Hope this information helps.
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Yep, you are right, BL versions always matched firmwares. I tried to wipe the phone with TWRP 3.0.2.3 and also to make a factory reset with the stock recovery. The stock firmware, which I tried to flash, was G930FXXU1BPH6_G930FOXE1BPH1_SER consisting of 4 files including BL,AP,CP and CSC. After 3rd or 4th flash of the same stock firmware the phone suddenly became alive and began to boot. Wu-huuu:silly: I was happy as a child. After having successfully launched the stock rom I have again flashed TWRP 3.0.2.3, went to "wipe" option and formatted data. Then I have installed a Superman Rom 1.12 and everything went the right way. I don't understand only one thing: why after having wiped the phone several times and having reseted it through the stock as well as TWRP recovery it didn't want to boot.
As you said, I suppose that the one of partitions was corrupted. Oh damn, I thought that I won't be able to resuscitate this phone.
I have flashed about 20 phones during my life, but I have never ever encountered such serious problems.

One PlusOne recovery loop- Help needed

Hello, I need serious help with my phone.
So, after a long while of having my phone rooted, and had a case of boot loop with twrp, I decided to go back to stock os and hung up the root days. I thought i did it right by getting a stock os and flashed it, and it worked for couple months, until yesterday.
My phone keeps going into Cyanogen Recovery, I tried rebooting so many times, once it did boot up to OS, but it went back after i restarted phone or it died.
Now I can't no longer get back, I thought factory resetting will work but it didn't. (Tried both wipe cache partition and Full factory reset option from the recovery) I found unroot your phone toolkits, thinking it could help fix my problem and just unroot/ give me back to OS (I wished i found this before flashing that custom stock rom).
But the toolkit doesn't work for me, it finds adb devices, but it cant find fast boot devices, because my phone cant even go into fast boot.
I tried manual, and the option from the recovery, it keeps going back to recovery. I have an option for apply update, and then apply from ADB, that was the only way for my pc to recognize my phone from adb devices. Any clues on how to fix?

Hi !
I may suggest you this thread https://forum.xda-developers.com/oneplus-one/general/tool-oneplus-one-return-to-stock-t2970390
Good luck !

xanthrax said:
Hi !
I may suggest you this thread https://forum.xda-developers.com/oneplus-one/general/tool-oneplus-one-return-to-stock-t2970390
Good luck !
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Will try, Ill respond back if anything happens!

Hmm I'm still having trouble because, I can't get into fast boot for some reason. It's keep going back to Cyanogen recovery. It has the option to reload into bootloader, but goes into cyanogen recovery again.

There is an option in dev options, uncheck the "update cyanogen recovery" and flash twrp again
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