Develop Bugs

[Q] What does the boot loader lock/unlock actually wipe out

I did the update to 4.0.4 and my phone is running like crap; laggy, radio doesn't perform well, and occasional crashes.
That said, I'm thinking it would be best to wipe it clean and start again. I was curious if doing the boot loader lock or unlock just wipes data that's been added, or if it would reset the entire phone to 4.0.1. I'm assuming it just wipes the data, but wanted to know for sure.
On a related note, would I be better off downloading the 4.0.4 image from google and just reflashing the phone with the Galaxy Nexus Toolkit if I'm seeing performance issues?

If you want a reinstall, just re-flash the images.
Locking then unlocking the bootloader wipes the entire device, and you have to reinstall the OS. Might as well just skip that step and completely re-flash the images. Using the bootloader is just an unnecessary step. Re-flashing the images will accomplish the same thing of reloading the OS from scratch.

Everything.
Sent from my Galaxy Nexus using XDA

martonikaj said:
If you want a reinstall, just re-flash the images.
Locking then unlocking the bootloader wipes the entire device, and you have to reinstall the OS. Might as well just skip that step and completely re-flash the images. Using the bootloader is just an unnecessary step. Re-flashing the images will accomplish the same thing of reloading the OS from scratch.
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Really??? I haven't heard anything about having to reinstall the entire os from relocking and unlocking the boot loader...
I'll probably just reflashing the 4.0.4 build on the google nexus builds page
pr3cision said:
Everything.
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
So does that mean it would go back to 4.0.1 and lose the 4.0.2 and 4.0.4 patches?

It does not wipe the is partition. When ur firmware is updated its updated. It won't revert back unless u flash a different image or stock ruu or image. It wipes all the data. Allll the data, not the os. You can't delete the os.
Sent from my Galaxy Nexus using XDA

ChazzMichaelMichaels said:
Really??? I haven't heard anything about having to reinstall the entire os from relocking and unlocking the boot loader...
I'll probably just reflashing the 4.0.4 build on the google nexus builds page
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What I'm saying is it won't wipe the update. If you want to go back to 4.0.1 or 4.0.2 you have to flash images. Locking then Unlocking won't just put you back to 4.0.1. Sorry if it was a little confusing.

Unlocking the bootloader wipes the user data partition only, which includes /sdcard. It does not wipe the system partition where the OS resides.
Sent from my Galaxy Nexus using Tapatalk

Factory Reset With Custom ROM?

Hey Guys..Verizon GN here. I was curious if someone who is rooted with a custom ROM goes to the Backup and Restore menu and clicks Factory Data Reset, what happens?I'm assuming it wouldnt go back to a factory rom.

you would assume incorrectly. it wipes user data, but does not restore stock images.

Zepius said:
you would assume incorrectly. it wipes user data, but does not restore stock images.
Click to expand...
Click to collapse
I said "wouldn't" assume
Sent from my Galaxy Nexus using XDA

it just factory resets.... deleting all logged in saved info/apps/etc.

How to "Factory Reset" via Clockworkmod Recovery

Hello All,
its a bit confusing for me. many threads describe that we should "Factory reset" the device before flashing a new ROM. what does it mean ? when i did factory reset my original stock ROM it deleted all my data and brought me an "out of box" phone. now when i have rooted my phone and flashed couple of roms, i just wiped cache and dalvik cache bla bla ... and of course my previous data was there..
actually what i want to do is ... i want to install a stock 4.2 and i don't want any previous data on my phone .. can it be possible ??
A little advice would be grateful ... ... thanks in advance ..

Hi,
Have you ever used the factory image that Google released to flash your phone?
takju has 4.2 factory image now.
You can download it, extract it, connect your galaxy nexus with fastboot mode to pc. Just double click flash_all.bat in the extracted folder if you are using windows.
"fastboot -w" will erase all user data. (include sdcard partition... remember to backup your file in the sdcard before you run this command)
The last fastboot command of flash_all.bat has the "-w" parameter. It'll clean all user data.
Sent from my Galaxy Nexus using xda app-developers app

V0odo0 said:
Hello All,
its a bit confusing for me. many threads describe that we should "Factory reset" the device before flashing a new ROM. what does it mean ? when i did factory reset my original stock ROM it deleted all my data and brought me an "out of box" phone. now when i have rooted my phone and flashed couple of roms, i just wiped cache and dalvik cache bla bla ... and of course my previous data was there..
actually what i want to do is ... i want to install a stock 4.2 and i don't want any previous data on my phone .. can it be possible ??
A little advice would be grateful ... ... thanks in advance ..
Click to expand...
Click to collapse
Why not use TWP, instead of CWM?

ilu73224 said:
Hi,
Have you ever used the factory image that Google released to flash your phone?
takju has 4.2 factory image now.
You can download it, extract it, connect your galaxy nexus with fastboot mode to pc. Just double click flash_all.bat in the extracted folder if you are using windows.
"fastboot -w" will erase all user data. (include sdcard partition... remember to backup your file in the sdcard before you run this command)
The last fastboot command of flash_all.bat has the "-w" parameter. It'll clean all user data.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
yes i did flashed factory image of 4.1 .. before rooting my phone .. so unlocking bootloader did work for me that time ... i appreciate for what you have guided me to .. but what if i want to use 4.2 roms .. not stock image using fastboot .. and if i use fastboot to erase all things ... will i have to flash recovery again too .. ?
Sorry if it sound dumb ..
Sent from my Galaxy Nexus using xda premium

tufel said:
Why not use TWP, instead of CWM?
Click to expand...
Click to collapse
Does TWRP have an option to factory reset .. ?
Sent from my Galaxy Nexus using xda premium

V0odo0 said:
Does TWRP have an option to factory reset .. ?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
They both do and in the context of a custom recovery they wipe data and cache, your sdcard is untouched in this factory reset
Sent from my Galaxy Nexus

go in the dev section download the 4.2 factory image zip.. then in cwm or twrp
wipe data
wipe system
wipe cache
wipe dalvik
flash the factory image
reboot

As far as I know all custom Recovery's leave your sd card untouched so unless u flash a factory image or relock/unlock or bootloader there's no way to reset to a factory state. Another method is to flash just the stock recovery using fast boot then factory reset using that then flash cwm again
Sent from my Galaxy Nexus using Tapatalk 2

@k786: Flash the factory image? Thought it could only be done through fastboot. Is there something I missed, like making a zip file with a factory image? If so, how? Tnx.

What people mean when they say to do a factory reset before flashing is to choose that option in your recovery. It removes your previously installed apps and configurations so that you are starting from a known configuration. They are not telling you to restore the factory rom for an "out of the box" configuration.
Sent from my Nexus 7 using Tapatalk 2

Okie .. i got that ... i use to wipe cache and dalvik .. etc... and its called factory resetting when flashing a rom ..
But what if i want to delete the contents on my phone's storage .. particularly in sd card folder .. obviously nexus has no physical sd card to format .. and it cant be mounted either to copy a flashable zip like i used to do with my wildfire ..
One option above was locking and unlocking boot loader again .. will it work now after rooting and custom recovery and custom rom .. ??
Sent from my Galaxy Nexus using xda premium

As I said flash stock recovery. It will reset everything
Sent from my Galaxy Nexus using Tapatalk 2

Stuck at Google/flashing the wrong kenel

OK. I flashed the wrong kernel on my new Nexus 7 (2013). My stupid, I flashed the kernel (franco) for the old Nexus 7 on the new one.
Luckily, I can still access bootloader and recovery (TWP). Now it's stuck at Google (again, I can still go to bootloader and recoery).
Where can I find the stock kernel that I can use? Or Can I flash a custom kernel?
Thank you in advance and I appreciate every comment.

http://forum.xda-developers.com/showthread.php?t=2380380
I recommend flashing a custom kernel.

Username invalid said:
http://forum.xda-developers.com/showthread.php?t=2380380
I recommend flashing a custom kernel.
Click to expand...
Click to collapse
Thank you indeed.

opticaldh said:
Thank you indeed.
Click to expand...
Click to collapse
I have flashed this kernel http://forum.xda-developers.com/showthread.php?t=2390173
and I'm still stuck at Google, I can go to bootloader and recvery (TWP). Please help me (

Have you considered trying this which will return your Nexus 7 to its original factory settings with a stock image? I haven't used this method but it may get your tablet working again. Also, for future reference, you should always make a nandroid backup before you flash something new in case you run into problems like this.

Wiping the cache/dalvik cache usually works for me when it would hang on the boot screen after a flash.

Username invalid said:
Wiping the cache/dalvik cache usually works for me when it would hang on the boot screen after a flash.
Click to expand...
Click to collapse
I did it but nothing changes

Do you have a ROM installed?
Try restoring to factory settings, reflashing a ROM, and then flashing the kernel. Wipe cache/dalvik once you're done and see if that works.

cyberprodigy said:
Do you have a ROM installed?
Try restoring to factory settings, reflashing a ROM, and then flashing the kernel. Wipe cache/dalvik once you're done and see if that works.
Click to expand...
Click to collapse
I'm running on STock, so I have to download a custom ROM, right?
and how to restoring to factory settngs, btw? in twp, a factory reset is wipes data, cach and dalvik. I did that.

opticaldh said:
I'm running on STock, so I have to download a custom ROM, right?
and how to restoring to factory settngs, btw? in twp, a factory reset is wipes data, cach and dalvik. I did that.
Click to expand...
Click to collapse
Try flashing the stock rooted ROM here.
To restore to factory settings, go to "Wipe" then slide the slider at the bottom of the screen.
Sent from my Nexus 7 using xda app-developers app

opticaldh said:
I'm running on STock, so I have to download a custom ROM, right?
and how to restoring to factory settngs, btw? in twp, a factory reset is wipes data, cach and dalvik. I did that.
Click to expand...
Click to collapse
Thanks cyberprodigy and Username invalid for helping me.
I fixed it.
After flashing 2 custom kernels (all of them were said to be completed install) but I was stuck at Google.
So I tried to flash a stock kernel (I downloaded it from here, sorry for hotlink-ing from another forum: http://droidbasement.com/asus/razor/flo/sys-backup/jb-4.3_ota-full_n7_razor-flo.zip). I will also uploaded the stock kernel file extracted from that link in case somebody needs it but doesn't want to download the whole Stock ROM.
The file extension is .img, so for people not knowing how to flash this file, use this command
"fastboot flash boot <the file name.img>"
Thanks again.
Here is the llink to the stock kernel for N7(2013). it's 16Mb so I can't attach it.
http://www.mediafire.com/download/8t7lu3jc00mt0b9/bootN7.img

Anyone know why system uses 19 GB of storage ?

I finally got PN on my PixelXL and just looked at storage and it says the system uses 19.9 GB and I'm wondering if I can clean the alternate slot to free up this space

My 128gb XL on latest update only use 6.79gb system
Sent from my Pixel XL using XDA-Developers Legacy app

You need to flash a factory image which will wipe all data as I had the same issue I believe its the only fix as you need a full wipe to fix and if your going to full wipe your better off to just flash a full factory image and be 100% factory fresh.

M9guy said:
You need to flash a factory image which will wipe all data as I had the same issue I believe its the only fix as you need a full wipe to fix and if your going to full wipe your better off to just flash a full factory image and be 100% factory fresh.
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Click to collapse
I had the same issue. This ^^^ was the only fix.

toknitup420 said:
I had the same issue. This ^^^ was the only fix.
Click to expand...
Click to collapse
Did you try > fastboot format userdata

cam30era said:
Did you try > fastboot format userdata
Click to expand...
Click to collapse
Formatting didn't work for me. I needed fresh system image too

What I did was flash the new Google image then I locked the boot loader then unlocked it again. When I booted up, my storage was back to normal. After that I flashed the custom ROM. This has happened to me often.

Yamalito said:
What I did was flash the new Google image then I locked the boot loader then unlocked it again. When I booted up, my storage was back to normal. After that I flashed the custom ROM. This has happened to me often.
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Click to collapse
If you are on Verizon, DO NOT LOCK BOOTLOADER! Just a friendly reminder.

Yamalito said:
What I did was flash the new Google image then I locked the boot loader then unlocked it again. When I booted up, my storage was back to normal. After that I flashed the custom ROM. This has happened to me often.
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That's a silly way of wiping data. Factory reset from os or fastboot erase userdata will accomplish the same thing.

tiny4579 said:
That's a silly way of wiping data. Factory reset from os or fastboot erase userdata will accomplish the same thing.
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Click to collapse
If someone is going to format user data they might as well flash the newest factory image. It just makes sense its also preventative maintenance and can keep your phone running at top performance.

M9guy said:
If someone is going to format user data they might as well flash the newest factory image. It just makes sense its also preventative maintenance and can keep your phone running at top performance.
Click to expand...
Click to collapse
Flashing the image is fine. Locking and unlocking the bootloader is unnecessary and should not be done if you're just trying to format. Locking th bootloader while playing around with a messed up system is the perfect storm for a bricked device.

toknitup420 said:
Flashing the image is fine. Locking and unlocking the bootloader is unnecessary and should not be done if you're just trying to format. Locking th bootloader while playing around with a messed up system is the perfect storm for a bricked device.
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Click to collapse
Oh definitely, I never would recommend to relock the bootloader that would be just asking for trouble. I replied to the guy saying to just wipe user data, which if your going to do that it just makes sense to flash the newest factory image and make good use of wiping user data and get back to factory fresh in the process that is just a no brainer.

I agree that locking and unlocking bootloader is silly, it can cause trouble, I'm aware of that, however that was the ONLY thing that worked for me in this case. I tried everything and the storage was still at 19 GB. I'm sorry if the method that worked for me is silly and unorthodox but for me that is all that worked. It's happened to me three times.