Downgrade from KitKat to CM10.1 - Nexus 7 Q&A, Help & Troubleshooting

After being unimpressed with 4.4 I am thinking about going back to CM10.1 ,however I have read some reports that users are having issues while downgrading referring to either kernels or bootloaders,is this correct? I have gone to completely stock 4.4 with locked boot loader,are there any steps I should take to ensure it all goes smoothly,last time I used wugfresh's toolkit and will be using it again this time.

UPDATE ! Managed to successfully downgrade to CM10.1 however wugfresh's toolkit could unlock the boot loader but not root and flash recovery, as it would just hang and display "waiting for device" for ever. So had to install recovery via fastboot , even then the version of twrp that the toolkit downloaded wouldn't run so installed a copy of CWM instead. After all this my initial concerns about the kernel / Bootloader didn't cause any issues anyway.

Related

Lost root after 4.1.2

I was running stock 4.1.1 rooted with NO cwm and I accepted the OTA undate two days ago. Now, I have SU still installed but nothing can obtain root permissions. I used Wugz toolkit to reflash su binaries through TWRP a few times and still no dice. Any thoughts?
Trickee360 said:
I was running stock 4.1.1 rooted with NO cwm and I accepted the OTA undate two days ago. Now, I have SU still installed but nothing can obtain root permissions. I used Wugz toolkit to reflash su binaries through TWRP a few times and still no dice. Any thoughts?
Click to expand...
Click to collapse
Here you go. Just follow the directions. It works fine for 4.1.2.
http://www.talkandroid.com/guides/misc/how-to-unlock-and-root-the-nexus-7/
veeman said:
Here you go. Just follow the directions. It works fine for 4.1.2.
http://www.talkandroid.com/guides/misc/how-to-unlock-and-root-the-nexus-7/
Click to expand...
Click to collapse
Welp, I've never actually used adb to push anything manually myself, but now is as good as time as any to try it. The link to CWM on that page is dead. Where else can I get it?
Trickee360 said:
Welp, I've never actually used adb to push anything manually myself, but now is as good as time as any to try it. The link to CWM on that page is dead. Where else can I get it?
Click to expand...
Click to collapse
http://www.clockworkmod.com/rommanager
You can download the Touch Recovery on the right side for Google Nexus 7 version. But make sure when you put in
Code:
fastboot flash recovery recovery-clockwork-touch-6.0.1.0-grouper.img
for step 5. instead of what they put.
veeman said:
http://www.clockworkmod.com/rommanager
You can download the Touch Recovery on the right side for Google Nexus 7 version. But make sure when you put in
Code:
fastboot flash recovery recovery-clockwork-touch-6.0.1.0-grouper.img
for step 5. instead of what they put.
Click to expand...
Click to collapse
got it. thanks much
Will only boot to stock recovery
veeman said:
You can download the Touch Recovery on the right side for Google Nexus 7 version. But make sure when you put in
Code:
fastboot flash recovery recovery-clockwork-touch-6.0.1.0-grouper.img
for step 5. instead of what they put.
Click to expand...
Click to collapse
Every time I reboot into recovery from the bootloader after flashing any recovery (except stock), it fails to boot into recovery. What happens is it shows the Google/Unlocked screen for a couple seconds, goes black (this is where it should enter recovery), but then shows the Google screen again and boots normally. I have tried this with two CWM recoveries and a TWRP recovery, both plugged into a computer and not. when flashing recovery it says OKAY. It seems as if something has gotten corrupted.
Before updating to 4.1.2 everything was working. To get the 4.1.2 update to install, I had to revert back to stock recovery and also revert back to the stock wallet app. Now 'su' is still a command, but it does not do what it is supposed to and no apps have root.
:'(
jphilli85 said:
Every time I reboot into recovery from the bootloader after flashing any recovery (except stock), it fails to boot into recovery. What happens is it shows the Google/Unlocked screen for a couple seconds, goes black (this is where it should enter recovery), but then shows the Google screen again and boots normally. I have tried this with two CWM recoveries and a TWRP recovery, both plugged into a computer and not. when flashing recovery it says OKAY. It seems as if something has gotten corrupted.
Before updating to 4.1.2 everything was working. To get the 4.1.2 update to install, I had to revert back to stock recovery and also revert back to the stock wallet app. Now 'su' is still a command, but it does not do what it is supposed to and no apps have root.
:'(
Click to expand...
Click to collapse
You can just root again and you will have root access.
I lost root too, so I just opened wugtoolkit and hit root. no unlock needed so no loss of programs either.
jphilli85 said:
Every time I reboot into recovery from the bootloader after flashing any recovery (except stock), it fails to boot into recovery. What happens is it shows the Google/Unlocked screen for a couple seconds, goes black (this is where it should enter recovery), but then shows the Google screen again and boots normally. I have tried this with two CWM recoveries and a TWRP recovery, both plugged into a computer and not. when flashing recovery it says OKAY. It seems as if something has gotten corrupted.
Before updating to 4.1.2 everything was working. To get the 4.1.2 update to install, I had to revert back to stock recovery and also revert back to the stock wallet app. Now 'su' is still a command, but it does not do what it is supposed to and no apps have root.
:'(
Click to expand...
Click to collapse
Any news about this. I stay in the same problem.
Here's my experience:
Stock ROM, rooted, custom kernel.
Got the notification for the 4.1.2 OTA update, so I did a nandroid backup in TWRP. Then I flashed back to the stock recovery and boot.img.
I was thinking that I might lose root, based on other's problems. Looked into installing Root Keeper by Voodoo. In the description it said the same feature is built into SuperSU. Problem was it's built into the paid version, which I didn't have (discovered this after it was too late). Installed 4.1.2 OTA. I lost root. My bootloader was updated to 3.41. I also was not able to flash a recovery. Fastboot flash would not work, Wugs toolkit didn't work. Tried several methods. After reading several threads that have been pretty active for the last few days, here's what finally worked for me. Found it in another thread, which I can't find at the moment.
adb reboot bootloader
fastboot flash bootloader bootloader-grouper-3.34.img from the JRO03D factory image
fastboot flash recovery TWRP img
fastboot reboot-bootloader
TWRP recovery started up :laugh:.
flashed SuperSU to re-root, it was sucessful.
updated busybox binaries.
installed OTA rootkeeper, so hopefully this won't happen again.
I'm not really sure I want to try flashing the 3.41 bootloader.
What a pain in the A.
Now it's time to flash faux kernel.
jayyo said:
Here's my experience:
Stock ROM, rooted, custom kernel.
Got the notification for the 4.1.2 OTA update, so I did a nandroid backup in TWRP. Then I flashed back to the stock recovery and boot.img.
I was thinking that I might lose root, based on other's problems. Looked into installing Root Keeper by Voodoo. In the description it said the same feature is built into SuperSU. Problem was it's built into the paid version, which I didn't have (discovered this after it was too late). Installed 4.1.2 OTA. I lost root. My bootloader was updated to 3.41. I also was not able to flash a recovery. Fastboot flash would not work, Wugs toolkit didn't work. Tried several methods. After reading several threads that have been pretty active for the last few days, here's what finally worked for me. Found it in another thread, which I can't find at the moment.
adb reboot bootloader
fastboot flash bootloader bootloader-grouper-3.34.img from the JRO03D factory image
fastboot flash recovery TWRP img
fastboot reboot-bootloader
TWRP recovery started up :laugh:.
flashed SuperSU to re-root, it was sucessful.
updated busybox binaries.
installed OTA rootkeeper, so hopefully this won't happen again.
I'm not really sure I want to try flashing the 3.41 bootloader.
What a pain in the A.
Now it's time to flash faux kernel.
Click to expand...
Click to collapse
So, the bootloader 3.41 is the problem?
Southmad said:
So, the bootloader 3.41 is the problem?
Click to expand...
Click to collapse
For some people, yes. No idea why.
veeman said:
http://www.clockworkmod.com/rommanager
You can download the Touch Recovery on the right side for Google Nexus 7 version. But make sure when you put in
Code:
fastboot flash recovery recovery-clockwork-touch-6.0.1.0-grouper.img
for step 5. instead of what they put.
Click to expand...
Click to collapse
Would that image work ok for Galaxy s3? Or there is no difference at all, just matter the 4.1.2 android version?
Cuz i updated my device throught Kies (cuzz from the device itself it didnt allow, stating that the image has been modifyied :angel: ) and after that even with the persistent mode on Super SU the root is gone

[Q] Help update to stock 4.2.2 from custom rom 4.2.1

Hi
First of all, this is don't habitual for me since I used to read related post (and more if an update has just arrived) but I just could not find an specific instructions (sorry if I am being too demanding) to go from custom 4.2.1(PA) to stock and finish with rooted 4.2.2, there are a lot of several procedures or recommendations to perform the update :S
well this is what I have planed
- return to stock 4.2.1 (using nexus toolkit)
- download and flash manually the update to 4.2.2 (first try to use the ota update option)
- get root... how??? lol
- restore my apps/data
Since I will return to stock I think I will lose root, that is ok but only if i can root the nexus again, Will I be able to get root on 4.2.2? or I have to root in 4.2.1 and keep it (in some way) at the time I update to 4.2.2
Srryforbad/basicenglish:silly:
Rooting every nexus is the same. Flash/boot a custom recovery and flash supersu.zip. it doesn't matter what OS version its on.
Sent from my Nexus 7 using Tapatalk HD
Pirateghost said:
Rooting every nexus is the same. Flash/boot a custom recovery and flash supersu.zip. it doesn't matter what OS version its on.
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
ok, I think I have missing that simple thing...
I don't have to worry about get the bootloader locked again therefore I just have to flash a recovery and SU when I have my N7 on 4.2.2, but...flash from... bootloader I guess, well, I will check that.
Thanks!
Learn the manual way of doing it and don't rely on toolkits. There are many tutorials walking you through the entire process
Sent from my Nexus 7 using Tapatalk HD
SLver said:
ok, I think I have missing that simple thing...
I don't have to worry about get the bootloader locked again therefore I just have to flash a recovery and SU when I have my N7 on 4.2.2, but...flash from... bootloader I guess, well, I will check that.
Thanks!
Click to expand...
Click to collapse
To elaborate on Pirateghost's points...
After flashing the 4.2.2 update... you will lose your recovery (CWM or TWRP)... but getting your recovery back is also part of how you (re)gain root.
As I have posted elsewhere...
Rooting is really simple.
(You will need an unlocked bootloader for this).
Get a custom recovery .img for your device...
Either CWM - http://www.clockworkmod.com/rommanager
...or TWRP - http://www.teamw.in/project/twrp2/103,
...it matters little which...
-----------
fastboot flash it.
-----------
Get Chainfires SU .zip package here http://download.chainfire.eu/310/SuperSU/UPDATE-SuperSU-v1.04.zip
Flash it using the custom recovery you've just fastboot flashed..
Reboot... and you're rooted.
-----------
...and that's it basically... you have root, a custom recovery from which you can flash ROMs, perform nandroid backups, etc.
But fastboot is the key... learn how to use it, and you will never need to be reliant on anybodies toolkit.
Rgrds,
Ged.

Unable to root 4.3 with Nexus tool kit

My nexus is running 4.3 stock flashed. I used 1.72 nexus root tool kit to root it and when I try to run SU, i get "there is no SU binary installed and superSU cannot install it"
I tried doing a factory reset and still the same issue.
Any thoughts?
rdefino said:
My nexus is running 4.3 stock flashed. I used 1.72 nexus root tool kit to root it and when I try to run SU, i get "there is no SU binary installed and superSU cannot install it"
I tried doing a factory reset and still the same issue.
Any thoughts?
Click to expand...
Click to collapse
Hi, rdefino...
Yes... don't use a toolkit. Use fastboot instead. It's much easier, and less prone to error.
Rooting the Nexus 7 is relatively straightforward...
-----------------------------------------------
1). Unlock the bootloader (I assume you've already done this).
2). Fastboot flash a Custom Recovery... with fastboot flash recovery name-of-recovery-file.img.
- Custom Recoveries available here...
- TWRP for 'grouper'
- TWRP for 'tilapia' or alternatively,
- CWM versions for both 'grouper' and 'tilapia' - it's important you get the right version for your device.
3). Boot into that Recovery, and flash Chainfire's SuperSU root updater.
4). Reboot, and you're rooted.
-----------------------------------------------
Takes about 5 minutes.
Good luck.
Rgrds,
Ged.
rdefino said:
My nexus is running 4.3 stock flashed. I used 1.72 nexus root tool kit to root it and when I try to run SU, i get "there is no SU binary installed and superSU cannot install it"
I tried doing a factory reset and still the same issue.
Any thoughts?
Click to expand...
Click to collapse
I used 1.7.2 and rooted my Nexus7 (4.3) successfully.
Nexus root toolkit 1.7.2 already support 4.3.
Your problem may be due to the toolkit cannot download the needed files to root.
Try to run toolkit again and make sure the updater successfully download all the files needed.
Flash superuser1.51 or 1.60 at WWW.too.im
Sent from my Huawei MediaPad using XDA Premium 4 mobile app
GedBlake said:
Hi, rdefino...
Yes... don't use a toolkit. Use fastboot instead. It's much easier, and less prone to error.
Rooting the Nexus 7 is relatively straightforward...
-----------------------------------------------
1). Unlock the bootloader (I assume you've already done this).
2). Fastboot flash a Custom Recovery... with fastboot flash recovery name-of-recovery-file.img.
- Custom Recoveries available here...
- TWRP for 'grouper'
- TWRP for 'tilapia' or alternatively,
- CWM versions for both 'grouper' and 'tilapia' - it's important you get the right version for your device.
3). Boot into that Recovery, and flash Chainfire's SuperSU root updater.
4). Reboot, and you're rooted.
-----------------------------------------------
Takes about 5 minutes.
Good luck.
Rgrds,
Ged.
Click to expand...
Click to collapse
There are some ways to root the Nexus 7. And the toolkit was made to make it easy.
Furthermore, I can root my Nexus7 without flashing custom recovery. This way I can OTA update (if any) without falling back to stock.

[Q] Updating from 4.2.2 to 4.3 failing repeatedly.

Hi everyone, I'm having a hell of a time trying to update my phone from 4.2.2 to 4.3 (stock rom). I have searched the forums (or tried to) and have done general Google searches, but nothing with my problems came up. I rooted my phone a while back, lost root when my phone updated to 4.2.2, then used wugfresh's Nexus Root Toolkit to get it back. Ever since 4.3 came out, I have been unable to update. I was using TWRP, and when updating through the phone it would simply dump me back there and not continue. I was then instructed to manually flash through TWRP, which I tried to do, but halfway through the flash it simply stops. I believe it said "signature verification failed". Someone had me try using the NRT to push the update as well, but that hasnt worked either. It just fails.
After asking around some more, I was instructed to flash the stock recovery, which I have now done. Now when I try to update (through the phone), it takes me to stock recovery, starts installing the update, and (yet again) halfway through the android guy just has an X on it and it says "failed". With Kit Kat supposedly coming out in two days, I really want to be ready to get the update asap. Could anybody help me out?
Also, if possible I would like there to be a way to do so without losing the data on my phone. But its not necessary.
I am sorry if this same problem has come up before. I tried going through other threads and the ones suggested after typing in the thread title.
Why don't you just use the toolkit to bring you back to stock and unroot? Once that is done you will get the update OTA
I am on stock, and I am getting the update OTA. It is just failing to install every time I try to install the update.
Your did something wrong when going back to stock. Did you unroot and relock the boot loader?
Sent from my Nexus 4 using XDA Premium 4 mobile app
Or you can just flash all the .img file of the 4.3 using adb.
To blankit, no I did not unroot or relock the bootloader. I simply re-flashed the stock recovery. Relocking my bootloader would cause me to lose all my data, and by all accounts has nothing to do with installing updates. I will try disabling root access.
To arffrhn, flashing the .img through adb is what I have done through different toolkits. No matter how I have gone about trying to manually flash the 4.3img or install through the OTA update, it is failing.
To blankit, no I did not unroot or relock the bootloader. I simply re-flashed the stock recovery. Relocking my bootloader would cause me to lose all my data, and by all accounts has nothing to do with installing updates. I will try disabling root access.
To arffrhn, flashing the .img through adb is what I have done through different toolkits. No matter how I have gone about trying to manually flash the 4.3img or install through the OTA update, it is failing.
I did same thing without any problems after I unrooted and installed stock kernel.
Just use Wug toolkit and factory 4.3 image.
Now open image and extract radio, bootloader and system img.
Now use Wug and flash only these img.
Then reroot and start flashing custom kernel or roms.
Sent from my NookColor using Tapatalk 4
If everything else fail, do it manually.. Seek this thread.. http://forum.xda-developers.com/showthread.php?t=2010312.
Never do anything using toolkits.. Manual way is always the best.
this tool may help you:
Have you ever get into a situation where you have a custom recovery on a stock rom and then get a OTA update then you find out that you need to flash the stock recovery to flash?, well this Nexus 4 Stock Recovery Flasher will sort it all out.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2413550

[Q] Help with 4.4.4 OTA

I was running 4.4.3 Rooted with TWRP recovery. Bootloader was unlocked.
I accepted the 4.4.4 OTA update and when it was done I found I lost root.
Tried to go into recovery to install Supersu.zip but had also lost TWRP.
Just got the dead android with the ! mark.
My Boot loader is still unlocked. I ran fastboot. Verified that I got a device id with Fastboot devices.
Then used Fastboot to install openrecovery-twrp-2.6.3.1-manta.img
Completed with no errors. Rebooted the device and then shut it down.
Rebooted into Fastboot, selected recovery and I still get the dead Android with the ! mark.
What did I do wrong?
Len
If you want to stay stock here you go. Look at the last page or so and it also has a link to the newest TWRP which you need to get going again.
http://forum.xda-developers.com/showthread.php?t=2529492
sfobrien said:
If you want to stay stock here you go. Look at the last page or so and it also has a link to the newest TWRP which you need to get going again.
http://forum.xda-developers.com/showthread.php?t=2529492
Click to expand...
Click to collapse
No, I don't want to stay stock. I want to be able to install TWRP so I can flash SuperSu.zip and get root back. When I do a fast boot install of the TWRP Image, it completes with no errors but when I reboot into recovery, I get the dead Android with the exclamation point not TWRP
Lenster45 said:
No, I don't want to stay stock. I want to be able to install TWRP so I can flash SuperSu.zip and get root back. When I do a fast boot install of the TWRP Image, it completes with no errors but when I reboot into recovery, I get the dead Android with the exclamation point not TWRP
Click to expand...
Click to collapse
Since you took the OTA your bootloader may be locked. After you get it unlocked I gave you where to get the recovery you need, the one you have is not KitKat friendly.
Lenster45 said:
I was running 4.4.3 Rooted with TWRP recovery. Bootloader was unlocked.
I accepted the 4.4.4 OTA update and when it was done I found I lost root.
Tried to go into recovery to install Supersu.zip but had also lost TWRP.
Just got the dead android with the ! mark.
My Boot loader is still unlocked. I ran fastboot. Verified that I got a device id with Fastboot devices.
Then used Fastboot to install openrecovery-twrp-2.6.3.1-manta.img
Completed with no errors. Rebooted the device and then shut it down.
Rebooted into Fastboot, selected recovery and I still get the dead Android with the ! mark.
What did I do wrong?
Len
Click to expand...
Click to collapse
Well, you didn't do anything wrong per se. When you flash the OTA (which I assume you did in TWRP), you lose root and your custom recovery since it replaces it with stock. You did the right thing by fastboot flashing your custom recovery back. However, the only thing you did "wrong" was rebooting into the Android OS instead of booting into the newly flashed recovery first. After you flash the custom recovery, select the recovery option in the bootloader, and it will boot into your custom recovery. If you don't boot directly into your custom recovery, and instead boot into the OS, the recovery will revert back to stock, which is why you saw the dead Android with the ! mark (that is the stock recovery). Just fastboot flash TWRP again, and boot straight into it. Then, just flash the SuperSU zip and reboot system. You should be good to go.
EDIT: Oh, and having an unlocked bootloader has no effect on receiving an OTA or your ability to flash it. If your bootloader was unlocked before flashing an OTA, it will remain unlocked. The only way it would become locked again is if you locked it yourself. You can even completely flash the stock image, and the bootloader will remain unlocked.
charesa39;53763629
EDIT: Oh said:
Strange, had a friend who took the OTA awhile back and it locked the bootloader. It was a JB version maybe they changed it with KitKat ? ( he could have locked it prior to my getting it going who knows) Thanks for the info, have never used an OTA since I got my N10 when it first came out.
Click to expand...
Click to collapse
charesa39 said:
Well, you didn't do anything wrong per se. When you flash the OTA (which I assume you did in TWRP), you lose root and your custom recovery since it replaces it with stock. You did the right thing by fastboot flashing your custom recovery back. However, the only thing you did "wrong" was rebooting into the Android OS instead of booting into the newly flashed recovery first. After you flash the custom recovery, select the recovery option in the bootloader, and it will boot into your custom recovery. If you don't boot directly into your custom recovery, and instead boot into the OS, the recovery will revert back to stock, which is why you saw the dead Android with the ! mark (that is the stock recovery). Just fastboot flash TWRP again, and boot straight into it. Then, just flash the SuperSU zip and reboot system. You should be good to go.
EDIT: Oh, and having an unlocked bootloader has no effect on receiving an OTA or your ability to flash it. If your bootloader was unlocked before flashing an OTA, it will remain unlocked. The only way it would become locked again is if you locked it yourself. You can even completely flash the stock image, and the bootloader will remain unlocked.
Click to expand...
Click to collapse
That did it. Thanks
Hi,
Could you add a [SOLVED] tag to the title, as it is now solved ?
~Lord
"Dream On! Dream Until Your Dreams Come True!" - Dream On (Aerosmith)
Sent from my GT-I9505

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