[Q] how to restore stock recovery and unlock bootloader? - Nexus 10 Q&A, Help & Troubleshooting

Well, I was using the Unified Android Toolkit (SkipSoft) to restore the system before selling it.
It looks like it flashed everything correctly, I did the following:
1) Unroot
2) flash stock recovery
3) lock bootloader.
I confirmed that the bootloader is unlocked, and root no longer works.
However, when I try to boot to recovery I get the android with an '!' sticking out of his chest. Any ideas??

RedBullet said:
Well, I was using the Unified Android Toolkit (SkipSoft) to restore the system before selling it.
It looks like it flashed everything correctly, I did the following:
1) Unroot
2) flash stock recovery
3) lock bootloader.
I confirmed that the bootloader is unlocked, and root no longer works.
However, when I try to boot to recovery I get the android with an '!' sticking out of his chest. Any ideas??
Click to expand...
Click to collapse
That is stock recovery. You have to hit Volume Up (or Volume Down?) + Power at the same time to bring up the recovery menu.

charesa39 said:
That is stock recovery. You have to hit Volume Up (or Volume Down?) + Power at the same time to bring up the recovery menu.
Click to expand...
Click to collapse
Right, I thin it confirms I have the stock recovery. I got to it by gettng into fastboot then selecting boot recovery. As far as I know that's the only way to do it.
So, why does it boot to recovery in error and how do I fix it?

I did just try downloading the stock images from google and flashed them all (I needed to unlock bootloader first).
Everything flashed. Still couldn't boot to recovery.
locked bootloader again, still couldn't boot to recovery.
What gives??

Can't recall what stock recovery looks like but I believe you have it, as in the ! You see is the stock recovery just as charesa39 has said
http://forum.xda-developers.com/showthread.php?t=2670400
Post three here has the steps laid out, in your case though it sounds as you completed your goal if everything is booting
Sent from my Nexus 4 using XDA Premium 4 mobile app

RedBullet said:
Right, I thin it confirms I have the stock recovery. I got to it by gettng into fastboot then selecting boot recovery. As far as I know that's the only way to do it.
So, why does it boot to recovery in error and how do I fix it?
Click to expand...
Click to collapse
It's not an error. That's the way it was intended to work. It was the same on my Nexus 5 and 7 (2013) before installing a custom recovery. I have no idea why it was designed like that. Maybe some safety feature, as in, adding a necessary button combination (Power + Volume Button) so someone doesn't accidentally wipe his or her device? IDK. All I know is, your recovery seems to be normal.
You are correct in that the only way to get to recovery is through fastboot, unless you have enabled the advanced power menu in developer options, or use a ROM or Xposed Module (like myself) that allows you to reboot into recovery.

Related

Recovery problem (ICS4.0.3)

After flashing ICS 4.0.3 update over Stock 2.3.6 i can't enter into recovery mode.
In bootloader if i choose RECOVERY it start loading and what i see is little green android that is shown for one second and after that the screen is black. Nothing else.
Anyone with the same problem?
Have you tried holding power and pressing volume up?
Yes, but nothing happens.
I have the same problem here
XXKF1->XXKI1
Can't get into recovery mode
just follow the sticky guides http://forum.xda-developers.com/showthread.php?t=895545
sashajovicic said:
After flashing ICS 4.0.3 update over Stock 2.3.6 i can't enter into recovery mode.
In bootloader if i choose RECOVERY it start loading and what i see is little green android that is shown for one second and after that the screen is black. Nothing else.
Anyone with the same problem?
Click to expand...
Click to collapse
You have to fastboot with the CWM recovery image
sorry for my poor eng
as far as i know there aren't root for ics(ota)
i think this problem will solve when root for ics(ota) is released.
Can't get into Bootloader with VolUp + Power anymore. It boots straight through.
Rebooting with "adb reboot bootloader" works, but then it says I have an i9020 (I have an i9023) and choosing recovery results in a black screen. I can flash CWM when in bootloader mode though.
Yes the same happens to me recovery is not working from bootloader or even from adb
The best it can be done is to use fastboot and upload recovery and it works but as soon as you want to call recovery again from adb or bootloader it forgets and you have to fastboot recovery yea is a pain
Sent from my Nexus S using XDA App
yeah.. same problem here... i have a 9023.. maybe we have to wait the ota for 9023... and then we will flash the right recovery..
Hello i have the nexus s i9023 i flashed the update manually and when i go to recovery it shows a black screen but i can confirm it's working i clicked on volume + and the power button (in normal cases this will show up the menu) but nothing showed on the screen,so i pressed the power button (if the menu is available this will chose the first option) the first option is usually reboot so when i clicked the power button the phone rebooted so i think the recovery is working but for some reason we cant see it.
Ca_PuNk said:
yeah.. same problem here... i have a 9023.. maybe we have to wait the ota for 9023... and then we will flash the right recovery..
Click to expand...
Click to collapse
The latest Gingerbread OTA was the same for the i9020T and the i9023. The only difference between those two is SLCD vs. Amoled display.
Call me nuts, but I can boot into bootloader menu with VolUp+Power again.
Choosing recovery now displays a green android with a red explanation mark for about a second, then the screen goes black, so I have to pull the battery.
Z3rO` said:
The latest Gingerbread OTA was the same for the i9020T and the i9023. The only difference between those two is SLCD vs. Amoled display.
Call me nuts, but I can boot into bootloader menu with VolUp+Power again.
Choosing recovery now displays a green android with a red explanation mark for about a second, then the screen goes black, so I have to pull the battery.
Click to expand...
Click to collapse
+1
same here
Please, as soon as someone fastboot a CWM recovery and successfully revert to stock GB 2.3.6, report.
Stefanauss said:
Please, as soon as someone fastboot a CWM recovery and successfully revert to stock GB 2.3.6, report.
Click to expand...
Click to collapse
Fastbooting CWM works fine. Didn't try going back to GB though, but I'm pretty sure it works with Odin if everything else fails.
Hey guys,you can just use fastboot to flash recovery and DO NOT reboot into OTA,
just go into recovery from bootloader.
Then you can go into CWM without any problem.
I use the above way to revert to gingerbread.
The OTA has a recovery check for every boot,so you should delete /etc/install-recovery.sh to avoid the f*ck rewrite of the stock recovery.
Also to get root access to remount /system, you should flash superuser.zip.
However this will only give you root privillege in ADB shell,no root privillege for app.
I also succeed in deleting the damn script in the OTA.
adam900710 said:
The OTA has a recovery check for every boot,so you should delete /etc/install-recovery.sh to avoid the f*ck rewrite of the stock recovery.
Click to expand...
Click to collapse
Better rename it. You never know for what you could use it.
Hey guys, i9023 here. Manually updated to ICS (pure awesomeness).
Now, I can report the known issue while accessing recovery: green robot, then the vacuum.
So, my question is: shall we able to restore STOCK recovery when i9023 rolls out?
Jac0verflow said:
Hey guys, i9023 here. Manually updated to ICS (pure awesomeness).
Now, I can report the known issue while accessing recovery: green robot, then the vacuum.
So, my question is: shall we able to restore STOCK recovery when i9023 rolls out?
Click to expand...
Click to collapse
it appear it's just an LCD/AMOLED issues... there are multiple reports that the ICS recovery itself is working properly (you can do blind "clicks") and it's just not showing the screen output
Same problemen here
Sent from my Nexus S using xda premium

Updated TWRP and now not booting

I updated TWRP today to 2.3.0.0 from within GooManager then rebooted into recovery and fixed my permission. It was done unusually fast and when I rebooted, it would get stuck on the booting screen. When I tried to boot into recovery by pressing power and both volume buttons, it would get stuck on the google logo.
Please advise.
Any other way I can fix this or somehow restore from a backup?
A lot of users are having issues with cwm and twrp not booting with new boot loader. You can revert back to old version or some have had success by deleting "recovery-from-boot." file. You can look at http://forum.xda-developers.com/showthread.php?t=1779092 I'm going to wait patiently for a twrp update that should resolve the issue.
Sent from my Nexus 7 using xda premium
Gigabitex2 said:
A lot of users are having issues with cwm and twrp not booting with new boot loader. You can revert back to old version or some have had success by deleting "recovery-from-boot." file. You can look at http://forum.xda-developers.com/showthread.php?t=1779092 I'm going to wait patiently for a twrp update that should resolve the issue.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
Thank you very much!
I'm sorry but I'm not too much of an expert on Android. AFAIK Recovery mode is the only way I know to do some low system stuff. If I can't boot into recovery, how else can I do anything to fix this?
How can I revert back to old version?
I know you linked the other thread but there are 33 pages I was hoping you would have a short answer hehe thanks.
Is it constantly rebooting at the google screen or just stuck?
goofball2k said:
Is it constantly rebooting at the google screen or just stuck?
Click to expand...
Click to collapse
If I try to boot into system, it's stuck on boot animation.
If I try to boot into recovery manually (power + volume buttons then select recovery) it would get stuck on Google. It doesn't loop.
I see that you posted over on the twrp thread, hopefully those guys can help you. I am assuming that you have updated to 4.1.2? If you're really stuck maybe try a tool kit like wugs or n7 toolkit? Sorry but SDK isn't one of my strong points either
Sent from my Nexus 7 using xda premium
woshiweili said:
If I try to boot into system, it's stuck on boot animation.
If I try to boot into recovery manually (power + volume buttons then select recovery) it would get stuck on Google. It doesn't loop.
Click to expand...
Click to collapse
You can reflash recovery from fastboot. If you've updated to 4.1.2 you might be experiencing same issue as many of us - being unable to boot to recovery. If that is the case, flash bootloader 3.34 from the JRO03D factory image as well.
Sent from my Nexus 7 using Tapatalk 2
comminus said:
You can reflash recovery from fastboot. If you've updated to 4.1.2 you might be experiencing same issue as many of us - being unable to boot to recovery. If that is the case, flash bootloader 3.34 from the JRO03D factory image as well.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
From what I understand, in order to reflash recovery from fastboot would require me to get the file to the device. However, right now I can't seem to get access at all as it never boots up whether into system or recovery. Are there any other ways to get files onto there?
---
OK this is weird. I tried rebooting into recovery again and it worked! I then rebooted into system and that worked too! This is so strange because I didn't do anything different. I guess it just took 20+ tries... I am not rebooting in a while... lol
woshiweili said:
From what I understand, in order to reflash recovery from fastboot would require me to get the file to the device. However, right now I can't seem to get access at all as it never boots up whether into system or recovery. Are there any other ways to get files onto there?
---
OK this is weird. I tried rebooting into recovery again and it worked! I then rebooted into system and that worked too! This is so strange because I didn't do anything different. I guess it just took 20+ tries... I am not rebooting in a while... lol
Click to expand...
Click to collapse
Hey, glad to hear you're in. In an earlier post you described
woshiweili said:
If I try to boot into recovery manually (power + volume buttons then select recovery) it would get stuck on Google. It doesn't loop.
Click to expand...
Click to collapse
which sounds like you were able to get to fastboot mode (power + vol buttons) - your N7 should look like this. From there you can issue fastboot commands to the device to flash recovery. kerne, and bootloader to name a few.
Actually I spoke too soon.
I can boot into recovery TWRP 2.3 with USB plugged in, but still can't boot into system.
Is it possible for me to downgrade to TWRP 2.2 from within TWRP? I kind of doubt it but am pretty desperate at the moment lol.
Yes, I can get into fastboot, but I'm not sure how to do anything besides pressing volume up or down to start, recovery, fastboot or shut down.
woshiweili said:
Actually I spoke too soon.
I can boot into recovery TWRP 2.3 with USB plugged in, but still can't boot into system.
Is it possible for me to downgrade to TWRP 2.2 from within TWRP? I kind of doubt it but am pretty desperate at the moment lol.
Yes, I can get into fastboot, but I'm not sure how to do anything besides pressing volume up or down to start, recovery, fastboot or shut down.
Click to expand...
Click to collapse
If you can get in to fastboot you are in good shape. :good:
You'll need the fastboot program (and the driver if on Windows) on your computer in order to issue commands. This guide can direct you on how to get that set up.
comminus said:
If you can get in to fastboot you are in good shape. :good:
You'll need the fastboot program (and the driver if on Windows) on your computer in order to issue commands. This guide can direct you on how to get that set up.
Click to expand...
Click to collapse
Thanks for all your help comminus!
Fortunately I was able to wipe everything while I was in recovery and restore from my most recent backup and now it's working fine. At the very least it's allowing me to boot into system
OK I'm really not rebooting for a while lol
I installed twrp a few weeks ago through GooManager and made a backup. When the 4.1.2 update came out, I downloaded it manually with the intent on flashing it via cu custom recovery, but low and behold twrp wasn't working at all. Even with my device plugged into my Win 7 pc... nothing but the exclamation point droid.
I was able to install an updated version of twrp and get everything sorted out, but now I don't have a lot of faith in it, and am booting into recovery at least once a day to make sure it's still working. I never had any problems with cwm.
Twrp has been updated if you're still having issues.
Sent from my Nexus 7 using xda premium
I'm using twrp version 2.3.0.0, and have no plans on updating it because it's stable and working great now
Gigabitex2 said:
Twrp has been updated if you're still having issues.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
Updated to 2.3.1.0 but still having booting issues

Can't boot or flash to TWRP or CMW

Today I tried booting up to recovery (power+vol down), after choosing Recovery Mode from the menu and hitting Power button, it gets to a screen with the green Android guy with a red triangle and just stays there.
So I rebooted the phone. Launch Nexus Root Toolkit, I tried to install CWM or TWRP, neither works. It gets to the same recovery mode and gets stuck there, only this time, it gets stuck on the Google logo instead of the Android guy with red triangle. I even try to flash stock recovery, and it also doesn't work.
Why can't I get into CWM or TWRP nor can I flash them?
Thanks for any help.
bebopblues said:
Today I tried booting up to recovery (power+vol down), after choosing Recovery Mode from the menu and hitting Power button, it gets to a screen with the green Android guy with a red triangle and just stays there.
So I rebooted the phone. Launch Nexus Root Toolkit, I tried to install CWM or TWRP, neither works. It gets to the same recovery mode and gets stuck there, only this time, it gets stuck on the Google logo instead of the Android guy with red triangle. I even try to flash stock recovery, and it also doesn't work.
Why can't I get into CWM or TWRP nor can I flash them?
Thanks for any help.
Click to expand...
Click to collapse
Be sure u are bootloader unlocked.
Android guy is normal... Is a safety step before entering on stock recovery, to pass that: hold power and hit once volume +
Probably u cant flash images cuz fastboot isnt working(old fastboot.exe file), wrong recovery file,...
sent from my NEXUS 4 tasting a revamped cooking recipe of Jellybeans (stock 4.3).
C4SCA said:
Be sure u are bootloader unlocked.
Android guy is normal... Is a safety step before entering on stock recovery, to pass that: hold power and hit once volume +
Probably u cant flash images cuz fastboot isnt working(old fastboot.exe file), wrong recovery file,...
sent from my NEXUS 4 tasting a revamped cooking recipe of Jellybeans (stock 4.3).
Click to expand...
Click to collapse
Bootloader was unlocked. I launched the CMD Prompt from Nexus Root Toolkit and ran the fastboot command to manually flash the downloaded CWM and it worked.
Code:
adb reboot bootloader
fastboot flash recovery recovery-clockwork-x.x.x.x-mako.img
So maybe something's odd about the simple one-click utilities in Nexus Root Toolkit that is not working.
Thanks for the help nonetheless. :good:
bebopblues said:
Bootloader was unlocked. I launched the CMD Prompt from Nexus Root Toolkit and ran the fastboot command to manually flash the downloaded CWM and it worked.
Code:
adb reboot bootloader
fastboot flash recovery recovery-clockwork-x.x.x.x-mako.img
So maybe something's odd about the simple one-click utilities in Nexus Root Toolkit that is not working.
Thanks for the help nonetheless. :good:
Click to expand...
Click to collapse
well ui never used tollkits... i like to know what im doing, and IMO doing it urself is better wich turned out to be true in ur case
im glad u got it working

Red triangle

Hi
I messed up so hard. Long story short, I messed up with flashing TWRP recovery and then tried to fastboot flash everything and now I'm bootlooping. When I'm trying to get into recovery, I get the RED triangle Andy. Is there a way for me to fix this?
Thank you
Can you boot into fastboot?
I had this and I was accidentally flashing recovery to boot!
Make sure you've got your commands correct.
Fastboot flash recovery recovery. IMG
Fastboot flash boot boot.img
Finally fixed the problem using the Unified Tool Kit. My recovery was borked, but not my bootloader. Got into the Bootloader and fixed stuff. Awesome.
asianrage said:
Finally fixed the problem using the Unified Tool Kit. My recovery was borked, but not my bootloader. Got into the Bootloader and fixed stuff. Awesome.
Click to expand...
Click to collapse
Can you tell me how you fixed your stock recovery? Mine gives me the red triangle too. I haven't done anything to the phone yet.
I booted into the bootloader (power + volume up & down). Run the Unified Tool kit, select the option to load a factory image, and went from there. It is easy if you read everything carefully. Originally, I was running many fastboot command but loaded the wrong one recovery.
Sent from my Nexus 7 using Tapatalk
lynseyw said:
Can you tell me how you fixed your stock recovery? Mine gives me the red triangle too. I haven't done anything to the phone yet.
Click to expand...
Click to collapse
That is stock recovery. Hold Vol Down and press Power. Boom. Don't feel bad though, I've been doing this for quite some time, and I still had to look up the command to get the menu to pop.

Ran EasyRecowvery 1.3b3. Now phone doesn't boot to any recovery. (including stock!)

After attempting to use this tool:
http://forum.xda-developers.com/v20/development/lg-h918-t-mobile-one-click-recowvery-t3491969
It appears that I do not have any recovery installed or it appears I don't have a bootable recovery. Previously I got the custom TWRP recovery to work but the installer went ahead before I was able to wipe data. Now I cannot even boot into stock recovery. even the command "adb reboot recovery" just makes the phone start up normally. Volume down + Power makes the phone start normally as well.
attempting to run the tool again will cause it to deny flashing the custom IMG file as it tells me my recovery is already modified and won't continue unless I turn off verification (highly ill-advised) It refuses to flash TWRP.
At least I have a working phone and not a boot looping brick but is there a way to get stock recovery back just so I can try again? I have been told I need to re-lock my bootloader and hopefully that will restore everything back to the way it was so I can start again.
Any help is greatly appreciated!
stanleyopar2000 said:
After attempting to use this tool:
http://forum.xda-developers.com/v20/development/lg-h918-t-mobile-one-click-recowvery-t3491969
It appears that I do not have any recovery installed or it appears I don't have a bootable recovery. Previously I got the custom TWRP recovery to work but the installer went ahead before I was able to wipe data. Now I cannot even boot into stock recovery. even the command "adb reboot recovery" just makes the phone start up normally. Volume down + Power makes the phone start normally as well.
attempting to run the tool again will cause it to deny flashing the custom IMG file as it tells me my recovery is already modified and won't continue unless I turn off verification (highly ill-advised) It refuses to flash TWRP.
At least I have a working phone and not a boot looping brick but is there a way to get stock recovery back just so I can try again? I have been told I need to re-lock my bootloader and hopefully that will restore everything back to the way it was so I can start again.
Any help is greatly appreciated!
Click to expand...
Click to collapse
Are you pressing volume down and power then releasing power for one second and repressing it while still.holding volume down?
Swizzle82 said:
Are you pressing volume down and power then releasing power for one second and repressing it while still.holding volume down?
Click to expand...
Click to collapse
Hmm...could Try that. But the adb command doesnt do anything either
Edit: tried it. It gave me a factory reset option but no stock or custom recovery
stanleyopar2000 said:
Hmm...could Try that. But the adb command doesnt do anything either
Edit: tried it. It gave me a factory reset option but no stock or custom recovery
Click to expand...
Click to collapse
That's the path to recovery,, press yes twice,,
Swizzle82 said:
That's the path to recovery,, press yes twice,,
Click to expand...
Click to collapse
And this wont brick? I'm worried about potentially not having a recovery and wiping the current OS and not having a way for it to reinstall it (since i may not have a useable recovery)
Btw i appreciate your help greatly
stanleyopar2000 said:
And this wont brick? I'm worried about potentially not having a recovery and wiping the current OS and not having a way for it to reinstall it (since i may not have a useable recovery)
Btw i appreciate your help greatly
Click to expand...
Click to collapse
If it is the stock recovery it will only format your system to how it is out of the box.
If it goes into TWRP then you'll know.
Double0EK said:
If it is the stock recovery it will only format your system to how it is out of the box.
If it goes into TWRP then you'll know.
Click to expand...
Click to collapse
Much appreciated friend, i will definitely try this and report back
stanleyopar2000 said:
much appreciated friend, i will definitely try this and report back
Click to expand...
Click to collapse
THIS GUY saved the damn day!
Thanks to everyone else who assisted me! @Double0EK , @Swizzle82
Swizzle82 said:
Are you pressing volume down and power then releasing power for one second and repressing it while still.holding volume down?
Click to expand...
Click to collapse
That doesn't work for me on my Freedom Mobile H915 with a locked bootloader. I only ask how to without ADB because I want to help someone else that bricked their device upgrading the firmware to factory reset it and/or wiping cache hoping it'll help.

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