Related
Ok i know a thread of this kind has probably been made a couple of times, and i apologize for this, but i have been searching every where to find a way to make my nexus one back to stock. I know once the bootloader is locked i cant reverse that but i just want to have the original stock recovery image. I currently have amonRA 1.7.0 recovery image. I have tried everything possible that i know, and as I must mention im not a really a good adb user. I mostly know how to use custom recovery images, load roms, themes, mods, etc. I have read a couple of threads where it would help me revert back original state but i just cant figure it out. I would very much appreciate it if someone would help me out and give me a step by step procedure i can use to flash a recovery image.
I currently have my nexus on ERD79 stock rom, no mods no nothing.
Firmware is 2.1(not 2.1update1)
thanks for the help!
http://forum.xda-developers.com/showthread.php?t=614850
this puts everything back to original even recovery img.. this is full instructions
and once its "unlocked" it cant be Relocked.. it stays unlocked
http://forum.xda-developers.com/showthread.php?t=614057
the PASSIMG
Step 2. unzip the original shipping ROM and put it somewhere you can find.
Step 3. Plug in Nexus One with USB to computer (enable usb and debug modes)
Step 12. Skip to step 13 if you want to keep recovery (assuming you have a modified recovery such as Amon_RA's recovery). If not
fastboot flash recovery recovery.img
Step 13. fastboot reboot
Thanks for this but i came across this thread and to be honest i got lost after it asked to put the unziped file where i can find it.
Can you give me an idea where i could put it?
Oh and i downloaded the passimg.zip and i couldnt extract it, my comp said file is invalid.
thanks again.
Ok ill see if i can unzip it for you sir
or you can try it this way too
http://www.mediafire.com/file/e5t4504thl2ry42/recovery.rar
there you go man recovery image from the thread posted before
1. Plug the phone into the computer
2. Reboot into fastboot by holding TrackBall + Power (you should see three Androids on skateboards and the words 'fastboot USB' in red)
3. On the computer, open a command prompt cd to the sdk/tools directory (we will assume the SDK is located in C:\android-sdk and the recovery file is in the root of the sdk/tools directory for the following steps)
4. With the phone connect via USB, open up a cmd prompt
Code:
adb reboot recovery"
5.
Code:
adb devices
A device name and 'recovery' should be returned
6.
Code:
adb push recovery.img /sdcard/recovery.img
recovery.img is located on android-sdk/tools dir
7.
Code:
adb shell flash_image recovery /sdcard/recovery.img
This permanently flashes the recovery.img to your phone, you can now boot into it by holding Vol- while powering on the device
8. Reboot
Click to expand...
Click to collapse
i apologise if this seems like a noob question, but i searched everywhere, and couldn't find the answer.
I followed the steps to flash the stock recovery to my nexus, and when i boot into the recovery mode to test it, it's just a blank screen with an error triangle and a little android standing next to it.
Is this what the stock recovery is meant to be? or did something go wrong in the process?
Yeah that should be the stock recovery, you should be able to press the power button and volume up and get a blue text list saying reboot system now, apply sdcard:update.zip.... etc.
yes, thank you very much for clearing that up for me
see my guide: [UNROOT] Unroot al android devices which was also posted on the front page. this step allows you to get a stock recover image specifically for YOUR GOOGLE NEXUS PHONE, not just generic google nexus phones
hate to revive a thread thread but im having the same delima.
i just bought a nexus one from CL and it was loaded up with a 2.3 rom. Im guessing its not using stock kernals, baseband, etc etc.
Im trying to get it back to stock EVERYTHING. i know i cant relock the bootloader but other than that, i want to revert it back to what you get right when you open the box. im not even sure what a recovery image is... but if its different when u flash different roms, i would like that stock too lol.
i know about the passingimg method but i wasn't sure if thats compatible with all roms (kind of like how unlocking iphones only works with certain basebands). i also wasn't sure if that'll return everything to stock, kernal, OS, modem, radio, recovery (?), etc.
im not very familiar with adb either. can anyone PLEASE help me out?
this is the method im talking about http://forum.xda-developers.com/wik...des_&_Tutorials#Unroot_.2F_Restore_your_Nexus
would the passingimg get EVERYTHING back to stock? or would it leave the custom recovery, kernal, or something else etc.
Hi,
I recently got asked by a friend to flash his google nexus one phone. like a mug i said yes and now i have a issue where it turns on, vibrates 7 times and stays at the splash screen with the x on it. I can boot into the fast boot / recovery mode but nothing works.
this happened after i tried to root the phone, it said waiting for device and didnt do anything so i killed the app (Superoneclick) the phone disappeared from device manager and now wont go past the splash screen.
Does anyone have any idea how i can get it back? .. thanks in advance for any help.
James
I'm guessing, since you used S-O-C, the bootloader is not unlocked. The only way I know how to fix it is if you OEM unlock it. You'll need fastboot and your Android SDK setup correctly.
Once you have the setup done, change directories to the tools folder, wherever you put your sdk. Boot your phone into fastboot by holding the trackball while powering it on.
Code:
cd C:\asdk\tools\
Plug your phone into USB, and check if the computer sees it
Code:
fastboot devices
Unlock the bootloader (THERE IS NO GOING BACK! You can never re-lock a Nexus)
Code:
fastboot oem unlock
Now you can flash a boot.img and system.img (preferably pre-rooted) from fastboot, and it should boot normally. If the phone boots, the phone is perma-rooted, and won't need any other rooting procedure (you just need to flash a rooted rom). Next time, be a little more careful
Hi wdfowty
at running the risk of asking for more help and making you cross could you post some links to these downloads?
I am a total newbie to these phones and want to make sure i have the right apps.
thanks again for the help and the quick response... and if i manage to get this phone back believe me it will be the last one i try to flash !!
cheers
James
Nah, you've got me wrong. I'm all about helping people that are willing and able to be helped.
Follow this guide, it'll walk you through the steps to set up your sdk and unlock the bootloader. The guide is a little dated, so the info might not be 100%, but it's generally everything you'll need to know. If you get stuck, feel free to ask.
Hi again,
when i run the command fastboot devices i get an error AdbWinApi.dll is missing.
it tells me to reinstall the app but i have done that and also run all the updates and i still get the same error?
Interstingly i also get the phone to fastboot and it says in red text on the phone fastboot.usb but i cant see anything in device manager that says Nexus one etc?
any more help appreciated.... worst case you dont fancy a christmas break over in England do you?
cheers
james
jamesabennett said:
Hi again,
when i run the command fastboot devices i get an error AdbWinApi.dll is missing.
it tells me to reinstall the app but i have done that and also run all the updates and i still get the same error?
Interstingly i also get the phone to fastboot and it says in red text on the phone fastboot.usb but i cant see anything in device manager that says Nexus one etc?
any more help appreciated.... worst case you dont fancy a christmas break over in England do you?
cheers
james
Click to expand...
Click to collapse
With the latest version of the SDK tools, they changed the directory for adb and fastboot. Unfortunately I'm not on my Windows machine... but check in the directory where you have the SDK extracted to and look for a platform-tools directory (iirc). From there, you should see fastboot.
So basically where it says this "Type: cd C:\android-sdk-windows\tools" change it to "C:\android-sdk-windows\platform-tools". Keep in mind that directory name may change... again, I'm not on my Windows machine right now.
Hi again,
thanks for the continued help. I have managed to get past that, i have OEM unlocked the phone and managed to copy the flash image to the device using the commands in the link you sent me.
problem i have now is when i go into recovery the phone again just pulls up the splash screen and vibrates 7 times.
i believe what should happen according to the link is to follow the 6 steps below.. even i can do that, but the phone doesnt get that far
//Turn phone off -> Hold Volume Down, hold Power button
//Press Volume Down to highlight Recovery -> press Power to select Recovery
//Backup/Restore -> Nand backup
//Wipe -> Wipe data/factory reset
//Wipe -> Dalvik Cache
//Flash zip from sdcard -> alpha-r##-update-modacocustomrom-nexusone-desire-withadditions-signed.zip (Or whatever other ROM you're using.)
another point is it runs a couple of lines of blue txt relating to the sd card, but it flashes up and dissapears too quickly for me to be able to read it and send across to you.
thanks again and if you can work this out i owe you a beer !!
James
jamesabennett said:
Hi again,
thanks for the continued help. I have managed to get past that, i have OEM unlocked the phone and managed to copy the flash image to the device using the commands in the link you sent me.
problem i have now is when i go into recovery the phone again just pulls up the splash screen and vibrates 7 times.
i believe what should happen according to the link is to follow the 6 steps below.. even i can do that, but the phone doesnt get that far
//Turn phone off -> Hold Volume Down, hold Power button
//Press Volume Down to highlight Recovery -> press Power to select Recovery
//Backup/Restore -> Nand backup
//Wipe -> Wipe data/factory reset
//Wipe -> Dalvik Cache
//Flash zip from sdcard -> alpha-r##-update-modacocustomrom-nexusone-desire-withadditions-signed.zip (Or whatever other ROM you're using.)
another point is it runs a couple of lines of blue txt relating to the sd card, but it flashes up and dissapears too quickly for me to be able to read it and send across to you.
thanks again and if you can work this out i owe you a beer !!
James
Click to expand...
Click to collapse
Have you flashed the recovery image using fastboot, or did you only copy the recover image to the sdcard? Step IV in that guide.
It sounds like you need to reinstall your recovery.
Download the recovery found here: http://forum.xda-developers.com/showthread.php?t=611829
Rename that file to recovery.img and place it somewhere you can remember
Boot the phone into fastboot by holding down the trackball and pressing power button.
Code:
fastboot devices
Code:
fastboot flash recovery C:\path\to\recovery.img
If all went well, there should be no errors. On the phone, use the volume keys to select "Bootloader". It will take you to a white screen with the blue text (ignore it, it's looking for update files like "PASSIMG.zip"). Select recovery, and it'll boot into recovery. If you see menu items, you are good!
I ran the fastboot command and used the flash image ending 2.0.0
this is driving me round the bend !!
What happened when you used the fastboot flash command? Did you see a bar on the top right of the phone?
wdfowty said:
It sounds like you need to reinstall your recovery.
Download the recovery found here: http://forum.xda-developers.com/showthread.php?t=611829
Rename that file to recovery.img and place it somewhere you can remember
Boot the phone into fastboot by holding down the trackball and pressing power button.
Code:
fastboot devices
Code:
fastboot flash recovery C:\path\to\recovery.img
If all went well, there should be no errors. On the phone, use the volume keys to select "Bootloader". It will take you to a white screen with the blue text (ignore it, it's looking for update files like "PASSIMG.zip"). Select recovery, and it'll boot into recovery. If you see menu items, you are good!
Click to expand...
Click to collapse
i do that and it accepts the recovery file and the progress bar goes up on the right hand side and the cmd prompt says its all good. then when i select recovery the phone goes to the black background with the four coloured cross and the unlocked padlock, vibrates 7 times and just hangs on that screen
beleive it or not it booted up a moment ago and the phone worked like it did before with v2.2 on it. so i am happy now it can be recovered... i just dont know what to do to straighten it out!
yes. the bar goes up on the right hand side of the phone. and i have definitely unlocked it as it now says unlocked at the top of the menu.
Have you tried to reimage the phone with the passimg method? Directions are provided in the wiki, under the unlock/restore heading:
http://forum.xda-developers.com/wik...des_&_Tutorials#Unroot_.2F_Restore_your_Nexus
Follow PASSIMG method (filename is case sensitive).
The link to the files is on the word "here" on step 2.
Use FRG33.
Sent from my Nexus One using XDA App
Hello today I attempted something that I thought was going to be a quick video tutorial fix. I tried Rooting my HTC one. I followed several guides and read many posts I easily managed to unlock my phone. The problem started when trying to flash the recovery onto my phone, first I tried through commands: fastboot flash recovery and I received the error (FAILED data transfer failure unknown error) I've searched for 7 hours looking for a fix. Since I cant root reverting back to a fresh install is impossible, I cant find a RUU for telus, (I live in canada). I just don't know what to do, when I try to flash anything my bootloader freeze, drivers are up to date, tried restarting computer. Used One_M7_All-In-One_Kit_v1.0 doesn't work. This is a nightmare come save me before I jump off a cliff.
EDIT: What I did from beginning was followed this video "How to Root the HTC One-FlamingArio"to the point where you try and flash the recovery fastboot. That didnt work so after trying to fix that I tried How To Root HTC One & Unlock Bootloader - Easiest & User Friendly- The smoking Android ( super boot a 1 click install) that made my bootloader screen turn to tampered. after that I tried One_M7_All-In-One_Kit_v1.
Note in all in one kit I did erase cache and standard recovery works fine, I've re-installed it may times.
Cant post links yet but I gave video names.
EDIT: when I do the cmd fastboot devices my device shows up when I do adb devices nothing shows up could this be part of the problem?
Thank you all for your help, I re-installed all the programs on my laptop and redid all the steps and it worked. Bye!
Try this in ABD fastboot erase cache then flash the recovery again i hope this helps:fingers-crossed:
What did you do from the beginning? Could you post a step by step traceback of what got you to this point? Let's see if you missed any steps
Tonberry23 said:
Hello today I attempted something that I thought was going to be a quick video tutorial fix. I tried Rooting my HTC one. I followed several guides and read many posts I easily managed to unlock my phone. The problem started when trying to flash the recovery onto my phone, first I tried through commands: fastboot flash recovery and I received the error (FAILED data transfer failure unknown error) I've searched for 7 hours looking for a fix. Since I cant root reverting back to a fresh install is impossible, I cant find a RUU for telus, (I live in canada). I just don't know what to do, when I try to flash anything my bootloader freeze, drivers are up to date, tried restarting computer. Used One_M7_All-In-One_Kit_v1.0 doesn't work. This is a nightmare come save me before I jump off a cliff.
Click to expand...
Click to collapse
Keep an eye on this thread http://forum.xda-developers.com/showthread.php?t=2302870
Many people are looking for the Telus RUU.
Can you still access standard recovery? If so try reverting to factory settings (all data will be lost) and try to boot.
If you can get it to boot you should have more luck in trying to root your device.
I know that I had some issue's trying to get root on my device. But once I got S-off with revone, I was able to install root no problem.
ArmedandDangerous said:
What did you do from the beginning? Could you post a step by step traceback of what got you to this point? Let's see if you missed any steps
Click to expand...
Click to collapse
But I would agree, if you can post the steps you have taken so we know where the bottleneck is.
Hope this helps you out bud
Still need help
Tonberry23 said:
Still need help
Click to expand...
Click to collapse
Nice to see you sorted it
Assuming you have actually flashed a recovery image to your device, you will then need to push a ROM to your sd card so that you can flash it in recovery.
Just do the following:
1. I am guessing you have the HTC drivers installed on your PC.
2. Download the attached adb.zip and unzip it to a folder on your C drive and call the folder whatever you like.
3. Boot your device into recovery and plug it in to a powered USB port on your PC.
4. Navigate to the folder that you just created on your PC and copy your ROM zip into it. rename the ROM zip to 'rom.zip' to make life easy.
5. Inside the folder, press and hold the shift key and right click in a blank part of the window and select 'Open command window here' (screenshot attached).
6. Type 'adb push rom.zip /sdcard' (don't use the quote marks)
7. Press 'enter'
8. Once the zip has finished being pushed to your sdcard, you can reboot into recovery and then flash it as normal.
EDIT: That will teach me not to read to the very end of a post. I'll leave this here for someone else.
Alright so last night i was able to unlock my phone and root it no problem on my mac computer (which I regret and wish i did it on windows) but the phone worked great after. But after debating if I should unroot I went ahead and tried unrooting the phone but the phone would not activate, it became stuck in bootloader. Ive tried everything that I could look up online and even called google for help but they said to search online and ask the developers. Ive tried flashing the stock image back on but it wouldnt work, it kept saying ivalid boot image header fastboot reason fall-through from normal boot mode. I dont even think my computer is recognizing the phone anymore so I dont know how I would get back into terminal to flash anything. If anyone can help me I would appreciate it. I have no idea what to do now after trying for a whole day. Thanks all, hope someone can be a savior.
Firstly, if you want help... please please please use paragraphs and lines and not 1 blob of text. It makes it extremely difficult to know your problem.
Secondly, do not ever call Google or Motorola (or any manufacturer) or any carrier for help. What you do on XDA is not their problem, that is why there is a warning when you unlock the bootloader.
Third, if you're able to get into bootloader mode then you can fix your phone by flashing the stock images. You most likely had the wrong environment or it is not set up properly to flash the stock images.
If you don't feel comfortable doing this kind of stuff, stick to using the phone out of the box rather than tinkering with it.
zephiK said:
Firstly, if you want help... please please please use paragraphs and lines and not 1 blob of text. It makes it extremely difficult to know your problem.
Secondly, do not ever call Google or Motorola (or any manufacturer) or any carrier for help. What you do on XDA is not their problem, that is why there is a warning when you unlock the bootloader.
Third, if you're able to get into bootloader mode then you can fix your phone by flashing the stock images. You most likely had the wrong environment or it is not set up properly to flash the stock images.
If you don't feel comfortable doing this kind of stuff, stick to using the phone out of the box rather than tinkering with it.
Click to expand...
Click to collapse
Yea, my bad. I typed it in a hurry on my phone.
Bootloader is the only screen I am able to get into. Whatever option I choose and hit power, all it does is flash the screen and go back to bootloader.
The stock image I download was from the google developers page but it did not work.
Will anything even work if my computer doesn't recognize the phone? If so how would I go about doing it?
I used to this this years ago and never ran into problems, just for some reason when I tried to unroot it messed up.
Is there anyway to possibly delete the terminal so I could start over and re-root it??
Anyways thanks for your response.
Is the device recognized by the fastboot command when connected to either the mac or pc?
zylstrajs said:
Is the device recognized by the fastboot command when connected to either the mac or pc?
Click to expand...
Click to collapse
Not sure to be exact, if I just go into terminal and enter "adb devices" nothing will pop up but if I enter cd then space and drag the android file into it, it wont say my device number anymore it'll say device. I'm wondering if I could somehow delete my terminal and possibly start over?
dnasr87 said:
Not sure to be exact, if I just go into terminal and enter "adb devices" nothing will pop up but if I enter cd then space and drag the android file into it, it wont say my device number anymore it'll say device. I'm wondering if I could somehow delete my terminal and possibly start over?
Click to expand...
Click to collapse
Adb is for android. You want to use the command: fastboot devices
dnasr87 said:
Yea, my bad. I typed it in a hurry on my phone.
Bootloader is the only screen I am able to get into. Whatever option I choose and hit power, all it does is flash the screen and go back to bootloader.
The stock image I download was from the google developers page but it did not work.
Will anything even work if my computer doesn't recognize the phone? If so how would I go about doing it?
I used to this this years ago and never ran into problems, just for some reason when I tried to unroot it messed up.
Is there anyway to possibly delete the terminal so I could start over and re-root it??
Anyways thanks for your response.
Click to expand...
Click to collapse
If you want to start over you'd want to be flashing the stock images https://developers.google.com/android/nexus/images
Have your phone in bootloader mode (vol down + power)
Go into the directory with fastboot and type fastboot devices.
If your environment is set up properly then it should display your device as the output. From there you can flash back to stock.
dnasr87 said:
Not sure to be exact, if I just go into terminal and enter "adb devices" nothing will pop up but if I enter cd then space and drag the android file into it, it wont say my device number anymore it'll say device. I'm wondering if I could somehow delete my terminal and possibly start over?
Click to expand...
Click to collapse
what does it say why you type
>fastboot devices
zylstrajs said:
what does it say why you type
>fastboot devices
Click to expand...
Click to collapse
command not found, but all I did was open terminal and entered fastboot devices. Not sure if I should enter anything before it.
dnasr87 said:
command not found, but all I did was open terminal and entered fastboot devices. Not sure if I should enter anything before it.
Click to expand...
Click to collapse
You have to change directory to the folder that contains fastboot. Do you even have fastboot environment set up? You need that.
Google search on how to set it up before posting back. There are many guides on XDA on how to accomplish this.
Okay, your environment isn't set up ideally. Follow these instructions to install fastboot and adb on your PC.
http://forum.xda-developers.com/showthread.php?t=2317790
---
Once you've done and you get a reply to the following command, you can move on.
>fastboot devices
---
open the google factory image file (using something like 7zip) : shamu-lrx21o-factory-e028f5ea.tgz
There is a folder in the .tgz file. Extract the contents of that folder to the directory listed for your command prompt (where you successfully ran fastboot just before).
> fastboot flash bootloader bootloader-shamu-moto-apq8084-71.05.img
>fastboot flash radio radio-shamu-d4.0-9625-02.55.03a.img
>fastboot reboot-bootloader
---
The device will reboot. Don't close the terminal window. Now, extract the contents of image-shamu-lrx21o.zip to the same folder that you've been working in. The folder that contains the bootloader and radio files you just flashed.
---
>fastboot flash recovery recovery.img
>fastboot flash boot boot.img
>fastboot flash system system.img
Some time will pass, this img may be sent in parts.
>fastboot flash cache cache.img
>fastboot flash userdata userdata.img
>fastboot reboot
zephiK said:
You have to change directory to the folder that contains fastboot. Do you even have fastboot environment set up? You need that.
Google search on how to set it up before posting back. There are many guides on XDA on how to accomplish this.
Click to expand...
Click to collapse
I did when I rooted it then once it crashed I tried to start over but wiped my computer.. I'll re download and try again
zylstrajs said:
Okay, your environment isn't set up ideally. Follow these instructions to install fastboot and adb on your PC.
http://forum.xda-developers.com/showthread.php?t=2317790
---
Once you've done and you get a reply to the following command, you can move on.
>fastboot devices
---
open the google factory image file (using something like 7zip) : shamu-lrx21o-factory-e028f5ea.tgz
There is a folder in the .tgz file. Extract the contents of that folder to the directory listed for your command prompt (where you successfully ran fastboot just before).
> fastboot flash bootloader bootloader-shamu-moto-apq8084-71.05.img
>fastboot flash radio radio-shamu-d4.0-9625-02.55.03a.img
>fastboot reboot-bootloader
---
The device will reboot. Don't close the terminal window. Now, extract the contents of image-shamu-lrx21o.zip to the same folder that you've been working in. The folder that contains the bootloader and radio files you just flashed.
---
>fastboot flash recovery recovery.img
>fastboot flash boot boot.img
>fastboot flash system system.img
Some time will pass, this img may be sent in parts.
>fastboot flash cache cache.img
>fastboot flash userdata userdata.img
>fastboot reboot
Click to expand...
Click to collapse
I did it on my mac, if i try to connect my phone to a pc it wont recognize it because its stuck in bootloader. I have already tried connecting it
Why does this thread make me LoL so much?
This thread is all over the place. Are you using your PC or Mac right now to do this? If it is a PC, what does Device Manager say when you plug your phone in while its in Bootloader mode?
PaisanNYC said:
Why does this thread make me LoL so much?
This thread is all over the place. Are you using your PC or Mac right now to do this? If it is a PC, what does Device Manager say when you plug your phone in while its in Bootloader mode?
Click to expand...
Click to collapse
Im using mac right now. I want to start from scratch, not sure if possible. but nothing really shows when I connect the device. I think I wipe the software off my computer. Would I be able to start doing it all over on a pc even if its stuck on bootloader and computer wont recognize?
dnasr87 said:
Im using mac right now. I want to start from scratch, not sure if possible. but nothing really shows when I connect the device. I think I wipe the software off my computer. Would I be able to start doing it all over on a pc even if its stuck on bootloader and computer wont recognize?
Click to expand...
Click to collapse
Are you in the NYC area? I'd just come over with my laptop and do it for you.
PaisanNYC said:
Are you in the NYC area? I'd just come over with my laptop and do it for you.
Click to expand...
Click to collapse
Dude im in NH but at this point I will ship the phone to anyone who can fix it and I will pay you guys $100
PaisanNYC said:
Are you in the NYC area? I'd just come over with my laptop and do it for you.
Click to expand...
Click to collapse
dnasr87 said:
Dude im in NH but at this point I will ship the phone to anyone who can fix it and I will pay you guys $100
Click to expand...
Click to collapse
not necessary some one can just use hangouts remote desktop to help you i thinks that's what they use on xda assist
Acer ADB
Your PC might not be recognizing because you got the Acer ADB of doom...
Just roll back your driver.
dnasr87 said:
Dude im in NH but at this point I will ship the phone to anyone who can fix it and I will pay you guys $100
Click to expand...
Click to collapse
Don't send it to a stranger on the internet. You never know who is who behind a screen lol
Honestly bro, if i were close to you, I'd just do it for you. I have the stock image, drivers, and adb/fastboot all set up. i'm good at fixing things, horrible at explaining things.
I need to lock my bootloader to do an exchange at T-Mobile. I have 20R stock flashed, but it still says custom bootloader upon boot, how do I relock it safely?
I read that "fastboot oem lock" will work, but will brick it if I don't do it perfectly. Any advice on what to do?
TechGuruGJ said:
I need to lock my bootloader to do an exchange at T-Mobile. I have 20R stock flashed, but it still says custom bootloader upon boot, how do I relock it safely?
I read that "fastboot oem lock" will work, but will brick it if I don't do it perfectly. Any advice on what to do?
Click to expand...
Click to collapse
ive done it .. it works. it will build dalvik once it reboots.
I was able to Lock the bootloader.
1. I connected the phone to my PC
2. Powered on the Phone (it took a few tried of pulling the battery and powering on)
3. Check the box for OEM Unlock in Dev. Option
4. Use Minimal ADB and Fastboot and type in
Quote:
adb devicecs
- you should see the phone listed as one of the devices in the command line window
Quote:
adb reboot bootloader
- phone should reboot and you shouold see 3 lines of text on top
Quote:
fastboot oem lock
- nothing will happen on the phone, but on in the commandline it should say that it is done
Quote:
fastboot reboot
Phone reboots and the boot screen does not show the unlocked bootloader message anymore
I'm terribly sorry if bumping is not ok.
Thought it wasn't worth making a new thread, since my post is about the one above.
Has anybody actually tried these steps above? (Since every other thread mentioning this says it's a one-way only thing..)
Does locking the bootloader means also loosing the custom recovery? (I'd expect that, but asking to be sure)
Does it return the phone to it's original state? (ie. before one unlocked the bootloader, or there are some differences?)
Does it also means I would be able to get official OTA updates and so on? (since with a custom recovery, that's not possible)
Thanks in advance.
Yes, it does work. I did it, worked perfectly. Yes it does return your device to it's original state. Just make sure the stock ROM is flashed and all should be well. I didn't try, but I see no reason why it wouldn't let you get OTA updates from T-Mobile. Let me know if you need help.
Nadeox1 said:
I'm terribly sorry if bumping is not ok.
Thought it wasn't worth making a new thread, since my post is about the one above.
Has anybody actually tried these steps above? (Since every other thread mentioning this says it's a one-way only thing..)
Does locking the bootloader means also loosing the custom recovery? (I'd expect that, but asking to be sure)
Does it return the phone to it's original state? (ie. before one unlocked the bootloader, or there are some differences?)
Does it also means I would be able to get official OTA updates and so on? (since with a custom recovery, that's not possible)
Thanks in advance.
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Click to collapse
ive said ive done it. on the above instructions you dont beleive.??
i think you loose the twrp phone doesnt show unlocked bootloader message did not check recovery but it must revert t stock one.. not sure about OTA since am not in tmobile network.
you dont need OTA. you can always download KDZ and flash it with LGUP.
and stay uptodate.
raptorddd said:
ive said ive done it. on the above instructions you dont beleive.??
i think you loose the twrp phone doesnt show unlocked bootloader message did not check recovery but it must revert t stock one.. not sure about OTA since am not in tmobile network.
you dont need OTA. you can always download KDZ and flash it with LGUP.
and stay uptodate.
Click to expand...
Click to collapse
Thanks both for replying.
And no @raptorddd , I did not mean that.
Your post is the only mentioning that locking the bootloader is possible, while all the other similar threads have ony people saying otherwise / it's not possible. I guess a slightly doubt is legit to have, don't take it wrongly
raptorddd said:
ive done it .. it works. it will build dalvik once it reboots.
I was able to Lock the bootloader.
1. I connected the phone to my PC
2. Powered on the Phone (it took a few tried of pulling the battery and powering on)
3. Check the box for OEM Unlock in Dev. Option
4. Use Minimal ADB and Fastboot and type in
Quote:
adb devicecs
- you should see the phone listed as one of the devices in the command line window
Quote:
adb reboot bootloader
- phone should reboot and you shouold see 3 lines of text on top
Quote:
fastboot oem lock
- nothing will happen on the phone, but on in the commandline it should say that it is done
Quote:
fastboot reboot
Phone reboots and the boot screen does not show the unlocked bootloader message anymore
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Click to collapse
I have follow this instructions and now it giving me and error. Any fix??
WARMANH811 said:
I have follow this instructions and now it giving me and error. Any fix??
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Click to collapse
What error?
TechGuruGJ said:
What error?
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Secure booting Error!
Error code: 1003
MODIFIED ! !
WARMANH811 said:
Secure booting Error!
Error code: 1003
MODIFIED ! !
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Click to collapse
are you sure you have h811.? i did not get that error ive tried this twice..
i remeber getting an security boot error on LG G2 i fix by flashing firmware .. so maybe KDZ could help..
if not am not sure then search for that error and find out how to fix.
raptorddd said:
ive done it .. it works. it will build dalvik once it reboots.
I was able to Lock the bootloader.
1. I connected the phone to my PC
2. Powered on the Phone (it took a few tried of pulling the battery and powering on)
3. Check the box for OEM Unlock in Dev. Option
4. Use Minimal ADB and Fastboot and type in
Quote:
adb devicecs
- you should see the phone listed as one of the devices in the command line window
Quote:
adb reboot bootloader
- phone should reboot and you shouold see 3 lines of text on top
Quote:
fastboot oem lock
- nothing will happen on the phone, but on in the commandline it should say that it is done
Quote:
fastboot reboot
Phone reboots and the boot screen does not show the unlocked bootloader message anymore
Click to expand...
Click to collapse
My H811 T-mobile phone needs service. It has original 20v software version. It is unlocked with TWRP and rooted. Can I use this method? Do I first have to downgrade software to some other version? Will this method also take out TWRP and root or do I still have to take them out before doing this? How? Please help.
joecandle said:
My H811 T-mobile phone needs service. It has original 20v software version. It is unlocked with TWRP and rooted. Can I use this method? Do I first have to downgrade software to some other version? Will this method also take out TWRP and root or do I still have to take them out before doing this? How? Please help.
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Click to collapse
no need to downgrade. to remove root and any trace if phone works. is to use KDZ then once it boots into system do the lock procedure. so it locks and the small white letter are removed. this way its like stock rom and recovery and the above commmands will make bootloader locked. and sent to repair. if bootloops try the freezing method.
Used on an LG Aristo that has Cyanogen and it worked
raptorddd said:
ive said ive done it. on the above instructions you dont beleive.??
i think you loose the twrp phone doesnt show unlocked bootloader message did not check recovery but it must revert t stock one.. not sure about OTA since am not in tmobile network.
you dont need OTA. you can always download KDZ and flash it with LGUP.
and stay uptodate.
Click to expand...
Click to collapse
This was the only one i found that didnt brick my phone and trust me ive bricked and unbricked this phone many times
When you use the fastboot command to lock back your bootloader, the phone doesn't revert automatically to the stock recovery and actually that is partly the reason why it bricks and other main reason is that changes made to bootloader to obtain root brick the phone. before you relock bootloader, if you have SuperSU (in-app menu option) or Magisk (uninstall zip file), use their respective methods to unroot the phone, then use twrp to flash .image file of stock recovery to recovery partition then use the fastboot command to lock the bootloader. Even then it may or may not work because if whatever method the phone uses to check the integrity of bootloader and/or recovery, such as md5, if it doesn't match, the phone will still brick. Since all your data on phone will be erased regardless as soon as you lock the bootloader, i personally just fastboot lock the bootloader, remove battery to power down, use the volume up and plug usb cable in from pc to put phone in download mode and just use LGUP (uppercut) if have kdz file already, which i do, i just let LG Bridge download the file, find it in programs folder and copy it to another location before LG Bridge deletes it --OR-- just use error recovery option in Software Update tab in LG Bridge as both LGUP and LG Bridge will detect the phone in download mode even if it is bricked.
By the way, I have used both methods above dozens of times without any issues, someone above who mentioned phone boot-looping because of locking the bootloader, it is boot-looping not because of hardware flaw which was widespread in LG G3 but a software issue (phone boots up, doesn't find the software configuration it is looking for and just restarts) and they are not the same issues, no need to freeze the phone, won't help.
the method works, but no OTA from T-Mobile. "verification problem".
When I try to "adb reboot bootloader" I get "security error".
If I try reboot recovery, TWRP is definitely not there.
Just want to update from20Q to 20X.
Any help would be appreciated.
metropical said:
the method works, but no OTA from T-Mobile. "verification problem".
When I try to "adb reboot bootloader" I get "security error".
If I try reboot recovery, TWRP is definitely not there.
Just want to update from20Q to 20X.
Any help would be appreciated.
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Click to collapse
The above points to you not giving permission possibly because either you missed the permission pop-up or selected option that didn't allow permission.
Can anyone help me?
When i unlock bootloader on my lg velvet 4g the fingerprint stop working so i want to relock. But when i put this on cmd "adb reboot bootloader" it only restarts my phone. Doesnt shows me the bootloader menu it only restarts normaly
Lukasz23 said:
Can anyone help me?
When i unlock bootloader on my lg velvet 4g the fingerprint stop working so i want to relock. But when i put this on cmd "adb reboot bootloader" it only restarts my phone. Doesnt shows me the bootloader menu it only restarts normaly
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managed to solve?