Database Users

Downgrade to 4.1.2 possible for nonrooted ?

Hi everyone I was just wondering if its possible to downgrade my nexus from 4.2.1 to 4.1.2 if I'm not rooted. I'm currently not interested in rooting my device so is there a way to do it without rooting/unlocking?
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Follow this http://m.pocketnow.com/2013/01/29/how-to-flash-nexus-to-stock
Sent from my Nexus 7 using Tapatalk 2

desiresiscool said:
Follow this http://m.pocketnow.com/2013/01/29/how-to-flash-nexus-to-stock
Sent from my Nexus 7 using Tapatalk 2
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I can't flash things because I'm unrooted. So I don't think this method will work. Correct me if I'm wrong.
Sent from my Nexus 7 using xda app-developers app

Anyone know?
Sent from my Nexus 7 using xda app-developers app

I do not know for sure but I quite doubt it.
I am curious as to why you want to though. Not that there's anything wrong with wanting to downgrade, of course.

Have you tried one the took kits available? Check around in the Nexus 7 original development section. Look for Wuggs.
Sent from my Nexus 7 using XDA Premium HD app

Droid117 said:
Have you tried one the took kits available? Check around in the Nexus 7 original development section. Look for Wuggs.
Sent from my Nexus 7 using XDA Premium HD app
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Click to collapse
I looked at his toolkit but it basically says that I have to root in order to even use the toolkit so is there a way to downgrade without having to go through that rooting process? For now, I don't want to root my nexus
Sent from my Nexus 7 using xda app-developers app

Don't try to root it you'll only manage unlocking the boot loader then when you try and root it it will get stuck in fast boot mode I tried about every rooting program but it could be because my Comp is running windows xp lol
Sent from my Nexus 7 using xda app-developers app

served24 said:
I looked at his toolkit but it basically says that I have to root in order to even use the toolkit so is there a way to downgrade without having to go through that rooting process? For now, I don't want to root my nexus
Sent from my Nexus 7 using xda app-developers app
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It's so easy to just reflash stock and relock the bootloader that you really have nothing to worry about. If you want unrooted stock 4.1.2 just unlock the bootloader, then flash the stock image of 4.1.2, then relock the bootloader after. It's a really simple process.

dstryrwiz said:
It's so easy to just reflash stock and relock the bootloader that you really have nothing to worry about. If you want unrooted stock 4.1.2 just unlock the bootloader, then flash the stock image of 4.1.2, then relock the bootloader after. It's a really simple process.
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Doesn't this void the warranty though? I know it did when i rooted my phone.
Sent from my Nexus 7 using xda app-developers app

Is this even possible or should I stop furthering this question?
Sent from my Full Android on PrimoC using xda premium

served24 said:
Doesn't this void the warranty though? I know it did when i rooted my phone.
Sent from my Nexus 7 using xda app-developers app
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If i'm not mistaken, as long as you flash back to 4.2.1(which is the os it came with when u got it out of the box), and then re-lock the bootloader, unroot, then your warranty wont be voided mate. hope I helped.
Sent from my MB860 using xda app-developers app

JohnMacky said:
If i'm not mistaken, as long as you flash back to 4.2.1(which is the os it came with when u got it out of the box), and then re-lock the bootloader, unroot, then your warranty wont be voided mate. hope I helped.
Sent from my MB860 using xda app-developers app
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Click to collapse
Yeah, I've done this plenty of times with my Nexus 7 and even the Verizon Galaxy Nexus. As long as you're on a stock image with a locked bootloader, they won't give you any trouble or claim you voided your warranty, as there's really no way to tell. I've gotten into the habit of unlocking and rooting my device as soon as I get it, and if I find a problem I just revert back to a stock image, relock the bootloader, then send it back in. I have yet to have a single issue.

dstryrwiz said:
Yeah, I've done this plenty of times with my Nexus 7 and even the Verizon Galaxy Nexus. As long as you're on a stock image with a locked bootloader, they won't give you any trouble or claim you voided your warranty, as there's really no way to tell. I've gotten into the habit of unlocking and rooting my device as soon as I get it, and if I find a problem I just revert back to a stock image, relock the bootloader, then send it back in. I have yet to have a single issue.
Click to expand...
Click to collapse
How do you save your stock image?
Sent from my Nexus 7 using xda app-developers app

served24 said:
How do you save your stock image?
Sent from my Nexus 7 using xda app-developers app
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You don't need to worry about saving your stock image. The person above you is talking about saving the stock image to return to after flashing a custom ROM.
There is no way to revert back to 4.1.2 without root access. Doing a factory reset, about the only thing you can do without root, will only return you back to stock 4.2.1
My advice just stay on 4.2.1 whatever your issue is with it.
Otherwise use a toolkit. You will need a PC and the 4.1.2 image. Wugfresh has a website. I would start there.
Sent from my Nexus 7 using xda premium

ezas said:
You don't need to worry about saving your stock image. The person above you is talking about saving the stock image to return to after flashing a custom ROM.
There is no way to revert back to 4.1.2 without root access. Doing a factory reset, about the only thing you can do without root, will only return you back to stock 4.2.1
My advice just stay on 4.2.1 whatever your issue is with it.
Otherwise use a toolkit. You will need a PC and the 4.1.2 image. Wugfresh has a website. I would start there.
Sent from my Nexus 7 using xda premium
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Click to collapse
I actually was just referring to the stock images you can get directly from Google or from goo.im. It's easy enough to just use the 4.2.1 stock image from Google to just restore back to how it shipped, and then relock the bootloader.

served24 said:
Hi everyone I was just wondering if its possible to downgrade my nexus from 4.2.1 to 4.1.2 if I'm not rooted. I'm currently not interested in rooting my device so is there a way to do it without rooting/unlocking?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
dstryrwiz said:
It's so easy to just reflash stock and relock the bootloader that you really have nothing to worry about. If you want unrooted stock 4.1.2 just unlock the bootloader, then flash the stock image of 4.1.2, then relock the bootloader after. It's a really simple process.
Click to expand...
Click to collapse
Completely agree with this... I have, on several occasions, reflashed stock, switching between 4.1.2 and 4.2.1 - (for me, it was more of an exercise in learning about fastboot and adb... and making sure I had TRIED AND TESTED factory images on my laptop as contingencies should anything go wrong when I came to start flashing custom ROMs).
-----
You don't need root to flash a factory image... everything is done with fastboot; with the Nexus 7 in FASTBOOT/BOOTLOADER mode (from complete shutdown, press and hold Volume Down button... whilst holding, press the Power Button).
(Root is meaningless anyway, here in FASTBOOT/BOOTLOADER mode, since /dev/block/mmcblk0p3, the SYSTEM partition, hasn't even been mounted yet - so no SU binary available... whether or not it exists, it's sort of irrelevant).
- here, for example, is the flash-all script from 4.1.2 (nakasi-jzo54k)... (Nexus 7, WiFi model only).
Code:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot flash bootloader bootloader-grouper-3.41.img
fastboot reboot bootloader
sleep 10
fastboot -w update image-nakasi-jzo54k.zip
After running this script (flash-all.bat if in Windows, or flash-all.sh if an Apple user) you can optionally choose to lock the bootloader with... (if you're concerned about warranty issues).
Code:
fastboot oem lock
-----
If it was the case you needed root to run...
Code:
fastboot flash [partition to be flashed] [IMG file to flash]
...you wouldn't be able to flash a CUSTOM RECOVERY like CWM or TWRP... and thus, you wouldn't be able to flash Chainfire's UPDATE-SuperSU-v1.00.zip (http://download.chainfire.eu/310/SuperSU/UPDATE-SuperSU-v1.04.zip) in order to gain root in the first place!... (you see the paradox!).
Rgrds,
Ged.

[HELP] Nexus 4 stuck on boot screen

Hi.
Guys. I need help. I tried changing font on my rooted Nexus. I used font installer from Play Store. After installation the app asked me to reboot the device. Now the phone is stuck on boot screen. I tried going in to recovery and wiping all the data. It did not help.
Can anyone in this community help me?
Sent from my LG-P970 using xda app-developers app

indian84 said:
Hi.
Guys. I need help. I tried changing font on my rooted Nexus. I used font installer from Play Store. After installation the app asked me to reboot the device. Now the phone is stuck on boot screen. I tried going in to recovery and wiping all the data. It did not help.
Can anyone in this community help me?
Sent from my LG-P970 using xda app-developers app
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Click to collapse
reflash your rom

simms22 said:
reflash your rom
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Click to collapse
Hi. Can you please suggest the post where I can get the procedure...
Sent from my LG-P970 using xda app-developers app

indian84 said:
Hi. Can you please suggest the post where I can get the procedure...
Sent from my LG-P970 using xda app-developers app
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are you running a custom rom?

simms22 said:
are you running a custom rom?
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No. I was on Stock. Rooted. No recovery installed..
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indian84 said:
No. I was on Stock. Rooted. No recovery installed..
Sent from my LG-P970 using xda app-developers app
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fastboot flash a recovery, and you could load a custom rom. twrp recovery has an option to push files to your phone with adb. you can push a rom to your phone then flash it in your recovery. or you can flash the stock image via fastboot http://forum.xda-developers.com/showthread.php?t=2183555

simms22 said:
fastboot flash a recovery, and you could load a custom rom. twrp recovery has an option to push files to your phone with adb. you can push a rom to your phone then flash it in your recovery. or you can flash the stock image via fastboot http://forum.xda-developers.com/showthread.php?t=2183555
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Click to collapse
Thanx Bro. My nexus is up and running now..
Sent from my Nexus 4 using xda premium

Today I tried fastboot and flash 4.3 stock rom on my nexus 4, root and stock rom.
For some reason the zip on "sdcard" is failing (error 7 code strange as it was full stock) letting me a stuck google boot.
I tried to wipe cache without success.
I am sure the solution is somewhere here as already said in that topic: http://forum.xda-developers.com/showthread.php?t=2183555
But what line should I follow first? Ideally I would like to flash 4.3 or 4.2.2 without factory reset.
Any advice?

Is your boot loader unlocked?? If yes you won't loose any data if you follow the above procedure.. But if not, I think the chances of saving data are low. You can install 4.3 directly if you have the files. I updated mine yesterday using the same method.. I was on slimbeam..
Sent from my Nexus 4 using xda premium

indian84 said:
Is your boot loader unlocked?? If yes you won't loose any data if you follow the above procedure.. But if not, I think the chances of saving data are low. You can install 4.3 directly if you have the files. I updated mine yesterday using the same method.. I was on slimbeam..
Sent from my Nexus 4 using xda premium
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Yes I am unlocked/rooted. The thing is 4.3 install fails either from sdcard or doing a sideload. I will try 4.2.2 but I am starting to worry a bit...

looppingz said:
Yes I am unlocked/rooted. The thing is 4.3 install fails either from sdcard or doing a sideload. I will try 4.2.2 but I am starting to worry a bit...
Click to expand...
Click to collapse
If you are unlocked, try this. http://forum.xda-developers.com/showthread.php?t=2010312
Download 4.3 factory image from here https://dl.google.com/dl/android/aosp/takju-jwr66v-factory-c2ef855e.tgz.
Hopefully this should help.

indian84 said:
If you are unlocked, try this. http://forum.xda-developers.com/showthread.php?t=2010312
Download 4.3 factory image from here https://dl.google.com/dl/android/aosp/takju-jwr66v-factory-c2ef855e.tgz.
Hopefully this should help.
Click to expand...
Click to collapse
Thanks this is what I am currently following but I trying to do some good backup before doing step d10 over there.
I just manage to adb pull the sdcard content. Anyuthing else I should and can recover with adb pull?

looppingz said:
Thanks this is what I am currently following but I trying to do some good backup before doing step d10 over there.
I just manage to adb pull the sdcard content. Anyuthing else I should and can recover with adb pull?
Click to expand...
Click to collapse
Not sure mate.. Search the forum.. Should help...

indian84 said:
Not sure mate.. Search the forum.. Should help...
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Click to collapse
I have been reading and applying more carrefully http://forum.xda-developers.com/showthread.php?t=2010312 without D10. It is well writen and it is looking to be a safe and efficient to me. I even started by installing 4.2.2 again, then backup then 4.3 with the same method.
4.3 up running and rooted!
No data loss, some stuff learnt and a new backup!
If a new OTA is popping up I will look for the same method.

looppingz said:
I have been reading and applying more carrefully http://forum.xda-developers.com/showthread.php?t=2010312 without D10. It is well writen and it is looking to be a safe and efficient to me. I even started by installing 4.2.2 again, then backup then 4.3 with the same method.
4.3 up running and rooted!
No data loss, some stuff learnt and a new backup!
If a new OTA is popping up I will look for the same method.
Click to expand...
Click to collapse
That's what XDA is for.. Enjoy flashing..
Good Luck..:good:

stuck on nexus X logo

i have a problem i flash stock rom android 4.3 in fastboot and the phone stuck on the X logo of nexus
i read that if i flash 4.2.2 baseband the problem will gone and it work but i want the 84 baseband
how can i fix it ? and why i have this problem i flash my phone many times and this is the first time i hace this problem
thnx

Try going into the stock recovery and wiping the cache. If that doesnt work, do a factory reset using the stock recovery.

I tried do what you suggest but still don't work :/

blior32017 said:
I tried do what you suggest but still don't work :/
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Click to collapse
Try locking and unlocking the bootloader, that wipes everything too
Sent from my Nexus 4 using xda app-developers app

Tunderpimp said:
Try locking and unlocking the bootloader, that wipes everything too
Sent from my Nexus 4 using xda app-developers app
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Click to collapse
still don't work :/
there any different between the versions ? 48/54 and 84

Not much I've used all of them. When I flashed 4.3 I did it with images from the Google page in bootloader mode. I updated all my Android pc software "I use Windows". I locked and unlocked, then flashed in bootloader. I had one issue I missed spelled something but very thing went well
Sent from my Nexus 4 using xda app-developers app

Tunderpimp said:
Not much I've used all of them. When I flashed 4.3 I did it with images from the Google page in bootloader mode. I updated all my Android pc software "I use Windows". I locked and unlocked, then flashed in bootloader. I had one issue I missed spelled something but very thing went well
Sent from my Nexus 4 using xda app-developers app
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Click to collapse
Try flashing the 4.3 baseband and see if it loads. If it does then I suggest you use a hybrid baseband by morrislee.

Question on returning to stock

Hello wonderful XDA Peoples. I am planning on returning my Nexus 4 in the near future as part of T-Mobile Jump. I'm currently on a stock ROM; but unlocked with CWM recovery installed.
To return to stock, would I need to fastboot the entire stalk image (via flash all.bat) or would I just need to flash the stock recovery image, then relock the boot loader? Thanks guys! Keep up the absolutely spectacular work.
Sent from my Nexus 4 using xda app-developers app

You could just flash the recovery.img and then re-lock it
Sent from my Nexus 5

joshvader8 said:
Hello wonderful XDA Peoples. I am planning on returning my Nexus 4 in the near future as part of T-Mobile Jump. I'm currently on a stock ROM; but unlocked with CWM recovery installed.
To return to stock, would I need to fastboot the entire stalk image (via flash all.bat) or would I just need to flash the stock recovery image, then relock the boot loader? Thanks guys! Keep up the absolutely spectacular work.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
on the nexus 4 rom,kernel .... index there is a stock recovery flasher, if you dont wanna use the pc
if you have root you can lock bootloader via an app
or else just via pc.

n-cry toolkit
With n-cry toolkit is posbly.
He][razor said:
I have offered. The developer didn't seem interested.
He] [razor
Click to expand...
Click to collapse

So, just flash the stock recovery image and then lock it? In that order? Thanks for the reply
Sent from my Nexus 4 using xda app-developers app

joshvader8 said:
So, just flash the stock recovery image and then lock it? In that order? Thanks for the reply
Sent from my Nexus 4 using xda app-developers app
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Click to collapse
Yes.

Hard bricked?

OK, back when kit Kat first come out I flashed a updated boot loader and when I rebooted the phone will no longer turn on. All I get is a red light. It seems I had a corrupted file. I can not get into recovery, and it seems I can't get into download mode either.
So here is my question. I read somewhere I can JTAG this phone and that will fix it. I'm unfamiliar with JTAG process so that's why I'm asking here.
Also, is there any other options?
Sent from my Nexus 5 using XDA Free mobile app

If you tried to flash a bootloader you most likely hard bricked your phone. Do you have a link to what you flashed? If you have to jtag check out mobiletechvideos.com. they've gotten very good reviews.
Sent from my Nexus 5 using XDA Free mobile app

jd1639 said:
If you tried to flash a bootloader you most likely hard bricked your phone. Do you have a link to what you flashed? If you have to jtag check out mobiletechvideos.com. they've gotten very good reviews.
Sent from my Nexus 5 using XDA Free mobile app
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Click to collapse
I don't have the link because it was almost a year ago. I'm using a nexus 5 now but want to save this phone if possible. I'll check that out. Thanks
Sent from my Nexus 5 using XDA Free mobile app

Did you unlock the bootloader before flashing a new bootloader? I'm not sure if this makes a difference.

audit13 said:
Did you unlock the bootloader before flashing a new bootloader? I'm not sure if this makes a difference.
Click to expand...
Click to collapse
Yes, I was running PA ROM at the time. Its possible I flashed a boot loader for another phone. Lol it was early in the morning, and it was totally my fault. I'm just looking for a way to save it because its in mint condition, not even a scratch on it.
So if JTAG is the only option, I'll gladly pay for it as long as it will work.
But I was told with JTAG, or motherboard replacement is required to fix what was done.
Sent from my Nexus 5 using XDA Free mobile app