[Q] 'Secure boot Error!' at boot, download mode and factory reset don't work - LG Optimus G (International)

Hello,
Here is what led to my issue:
I rooted my phone using this method: http://forum.xda-developers.com/showthread.php?p=38886073#post38886073
Downloaded clockwork rom manager.
Here comes the thing I don't remember. At least i know that the last thing i did was to click on 'backup current rom'
After this the phone reset itself and this message came up:
Secure booting error!
Cause: boot certification verify
Then i tried to reset using the power button, which led me to the 'battery full' screen - afterwards i was able to reboot. As stupid as I am I just tried the same thing again. And ever since i am stuck at the 'Secure booting error!' screen.
I am unable to enter download mode. I get to the 'Hard factory reset' screen, but if i accept doing so, it says 'Secure booting error!' again.
I also remember clicking on 'restart into recovery mode' at some point, but this is not the last thing i did.
I am really desperate. Please, help me!

Well i had the same issue today... It happened after i did two changes. One of them was to to try to relock from freegee and flash twrp again from freegee. In my case i was able to go in download mode and flash original kk rom with lg flash tool.

Unfortunatly, trying to boot in downloadmode, i still get the same error :/

Jubi-Wan said:
Unfortunatly, trying to boot in downloadmode, i still get the same error :/
Click to expand...
Click to collapse
How are you trying to boot into download mode? And what factory reset screen? It seems as though you did not unlock the bootloader using freegee, if you make any changes and relock the boot loader you will get that error. But it seems that it has not been unlocked. If you hold power and volume up what happens? Same thing when power and volume down, one of them is recovery (possibly factory reset you are seeing) and the other is download mode. I don't remember right now but you should read the whole softbrick thread and see if you are missing something. You may need to use LGPNST to go back to stock, you can also use that program to flash a new recovery so read carefully and follow all steps.
When this happened to me I was able to flash an unlocked bootloader and it allowed me to use my phone again as it was before doing something stupid (for me it was an attempt to re lock the bootloader).

well, i managed to get into download mode. Obviously i used the wrong method to get into download mode...
I used this method and everything worked fine, so far. : http://forum.xda-developers.com/showthread.php?t=2249500
My phone doesn't boot now. Fast Boot doesnt work aswell.
All that happens is a white battery showing on the screen and when i try to fastboot all that happens is that the LED is blinking or glowing red after some while.

Jubi-Wan said:
well, i managed to get into download mode. Obviously i used the wrong method to get into download mode...
I used this method and everything worked fine, so far. : http://forum.xda-developers.com/showthread.php?t=2249500
My phone doesn't boot now. Fast Boot doesnt work aswell.
All that happens is a white battery showing on the screen and when i try to fastboot all that happens is that the LED is blinking or glowing red after some while.
Click to expand...
Click to collapse
What do you mean when you try to fastboot? Fastboot is basically the bootloader and allows you to select recovery or download mode. What you should have done after following that thread is go to recovery and wipe everything and flash a new ROM.
If you are saying that the bootloader is not coming up and allowing you into recovery then I believe something was missed.

After trying out some varioants of this it worked: http://forum.xda-developers.com/showthread.php?p=40274560&highlight=red+led#post40274560
I wiped the phone, but since I had to leave over the weekend i just turned it off and went away.
Now that I am back, nothing works now :/ The Phone doesnt react to anything, not even donwload-mode.
Is the battery too low maybe? It's on the wall now for a few hours, but it still doesn't react. It's not warm either.
edit:
when i charge the phone, i will get a 'watchdog bark' after some time allowing me to get into recovery. accesing downloadmode from there doesn't do anything. strangely, the recovery isnt trwp although it should be because teenybin comes with it. it's 'bbs.gaodi.net' which doesn't have a sideload feature. what do i do now?
edit2:
after 10000 tries i got into download mode. i don't want to **** up now so i won't do anything until i know exactly what to do.
any advice?
edit3:
got it working by flashing another teenybin which included trwp - then i installed miui via sideload. i don't have signal though, but i will open another thread for this since this is another issue.

Related

Stuck on Google Screen after JB Update

Hi,
I've attempted the JB update
http://forum.xda-developers.com/showthread.php?t=1737899..
fastboot flash boot boot.img etc.. which said all was well..
But now find that my phone will not boot up, doesn't get past the Google and unlock screen.
I've tried all combinations of volume buttons, I can get to the fasboot menu where I can choose either Recovery Mode, Power Off, Start or Restart bootloader.
None of these appear to do anything, recovery goes to the google a screen followed by an Android on it's back with an exclamation mark over it.. then goes to the Google and unlocked icon screen and stays there...
I fear my phone is bricked... Please help..
bevnet said:
Hi,
I've attempted the JB update
http://forum.xda-developers.com/showthread.php?t=1737899..
fastboot flash boot boot.img etc.. which said all was well..
But now find that my phone will not boot up, doesn't get past the Google and unlock screen.
I've tried all combinations of volume buttons, I can get to the fasboot menu where I can choose either Recovery Mode, Power Off, Start or Restart bootloader.
None of these appear to do anything, recovery goes to the google a screen followed by an Android on it's back with an exclamation mark over it.. then goes to the Google and unlocked icon screen and stays there...
I fear my phone is bricked... Please help..
Click to expand...
Click to collapse
1.) Your phone is far from bricked at all. You have access to the boot loader (i.e. the screen with the options). The recovery you're seeing is stock recovery. All you need to do is go into boot loader and fastboot flash recovername (CWM) and you will have your custom recovery back to wipe data and reinstall a rom or restore a nandroid backup
Mine is doing the same thing, weird thing is, it was working since yesterday on jellybean, it just randomly froze this morning and and now won't boot..
im currently at work so i don't have admin rights to do a fastboot flash..
any idea why it would randomly stop working when i havn't flashed anything on it besides the jb rom?
Sorted..
Thanks for the comments.. yeah i was over-reacting a bit there..
I downloaded the Galaxy Nexus Toolkit, got a stock rom form gopogle, flashed it.. back to normal, well, it will be after i restore the CWM backup i took.. phew..
Thanks again
Ian.
Still stuck
I'm also stuck in the same situation(google with the unlock screen). I fear I'm a little more stuck. I also can see the recovery/restartbootloader screen. However, everything I try still comes back to that same google screen and gets hung up. Need some help!
this has happened twice today and i think it from using volume+
Steelbully said:
I'm also stuck in the same situation(google with the unlock screen). I fear I'm a little more stuck. I also can see the recovery/restartbootloader screen. However, everything I try still comes back to that same google screen and gets hung up. Need some help!
Click to expand...
Click to collapse
Boot into recovery, wipe cache, Reboot

Soft Brick Please Help

I am soft-bricked (I hope). A boot jig does nothing for me, but I am able to get into twrp recovery. It won't let me flash my current rom though (Mijjz). What should I do? (I am able to access odin through the twrp recovery right now though, and the computer does recognize it.) I am not able to boot directly into it. When attempting to flash in twrp it can't verify the partition size. I believe this is emmc?
Edit: This helped, but... http://forum.xda-developers.com/showpost.php?p=27852689&postcount=435
So this got my phone to boot again (yay) and now it can go into download mode and such, but my phone appears to be in a boot loop of the sprint logo, turning on and off. =( now what?
Edit #2: I am posting how I got this running for future visitors with my issue to see that there is hope of getting there device back online . So after I was able to get into download mode, I was able to go and flash the El26CWM and then do a Wipe on everything. I then was able to flash my favorite ICS rom, and get on my way. Unfortunately somewhere along the way my Modem got wiped out so I had to go back into download mode to flash it, and I found a new issue. For some reason, my phone still refuses to enter download mode without a jig. So I put my jig in, and downloaded the modem. All is working now (except I still can´t figure out why I need a jig to enter download mode, and the recovery wont boot for me either. It just goes and boots up normally. Its like until the Rom is loaded, it doesn´t take any imput from the buttons. I´m now running an FF18 kernel, so I find this to be odd, but at least I have a working device. Now I´m off to buy myself a nice memory card to compensate for the lost 8 gigs. The only thing that I can think of that may be causing the no download mode issue (although I can´t see why or how) is that I had a custom splash screen (not boot animation, splash screen) before I corrupted my emmc. Throughout the whole process of restoring, it displayed my custom one, except when I put on EL26, it went back to the Normal Boot screen. (the only time since the emmc screwed up that my buttons responded) But when I flashed back up, the custom one came back, and my controls to get into recovery and download mode stopped working again.

Phone is stuck on teamwin screen flashing on and off.

I cannot use the hardware buttons any longer to even get into fastboot mode. I tried to insert a new TWRP theme, named it ui.zip, place it in the theme folder, then rebooted the phone and now it will not even go into recovery, fastboot mode, nor turn on. Anybody have any suggestions on how to get through to the recovery. I guess I locked up the recovery, and can no longer boot my phone to even be able to delete that ui.zip file from the theme folder under TWRP.
OK, now I managed to get it into fastboot mode. But that is it.
Can I extract a file from the phone in fastboot mode?
Thanks,
chevy383surfing
Well, I finally figured it out. I'll add an explanation on this whole deal after I get off work. Just in case anybody else runs into the same problem, maybe my little routine will help someone else.
chevy383surfing said:
I cannot use the hardware buttons any longer to even get into fastboot mode. I tried to insert a new TWRP theme, named it ui.zip, place it in the theme folder, then rebooted the phone and now it will not even go into recovery, fastboot mode, nor turn on. Anybody have any suggestions on how to get through to the recovery. I guess I locked up the recovery, and can no longer boot my phone to even be able to delete that ui.zip file from the theme folder under TWRP.
OK, now I managed to get it into fastboot mode. But that is it.
Can I extract a file from the phone in fastboot mode?
Thanks,
chevy383surfing
Well, I finally figured it out. I'll add an explanation on this whole deal after I get off work. Just in case anybody else runs into the same problem, maybe my little routine will help someone else.
Click to expand...
Click to collapse
Next time you loop, vol up and power for 10 seconds with phone Unplugged, then vol down and power to go to boot loader
If for some reason it doesn't restart put the phone close to a bright light
Similar problem
Hi. I am on a Kindle Fire HD 7 and just got cynogeanmod 12. I was going through settings when device got laggy. And somehow the device thought I wanted factory reset so thats what it did. My Kindle Rebooted and now I get a screen that says "teamwin" and every 2 secs. the screen flashes. None of the tips using buttons worked. It can only turn on and off. I need assistance in finding a way to get this back to stock(from there I can re-root and do the process again to get back cynogeanmod).
Thanks,
aputtapa000
aputtapa000 said:
Hi. I am on a Kindle Fire HD 7 and just got cynogeanmod 12. I was going through settings when device got laggy. And somehow the device thought I wanted factory reset so thats what it did. My Kindle Rebooted and now I get a screen that says "teamwin" and every 2 secs. the screen flashes. None of the tips using buttons worked. It can only turn on and off. I need assistance in finding a way to get this back to stock(from there I can re-root and do the process again to get back cynogeanmod).
Thanks,
aputtapa000
Click to expand...
Click to collapse
First, this is the M8 forum, not the Kindle forum. However, I actually can help you with that.
Most stock recoveries seem to have a problem with doing factory resets. Flash the stock recovery for your device, let it perform the factory reset, boot back into the OS (to make sure it worked), then reflash your custom recovery.
jshamlet said:
First, this is the M8 forum, not the Kindle forum. However, I actually can help you with that.
Most stock recoveries seem to have a problem with doing factory resets. Flash the stock recovery for your device, let it perform the factory reset, boot back into the OS (to make sure it worked), then reflash your custom recovery.
Click to expand...
Click to collapse
Tank you for this quick reply :good: . I will try to get back into my stock recovery but if it is on my device, how will I access this on my computer and force flash it on my tablet. I only need help making the tablet responsive/workable. Once this is done I should be able to figure out the rest.
Thanks

How to fix blocked boot recovery samsung?

Hello guys,
A few months ago, I rooted my phone using kingroot. After a few weeks, i tried to install TWRP custom recover to unlock bootloader. I accidently downloaded a wrong version of it and flashed it using flashify app, after which i booted into recovery to check the new recover mode. But, something awkward happened. THE BOOT MODE DIDN'T OPEN AND THE SCREEN GOT STUCK AT "Booting into recovery". I read on the internet and realised that my device has got soft-bricked. Also, phone wasn't rebooting. So, i found a solution atleast start my phone. I took out my battery, pressed the buttons for download mode and then placed the battery back in and pressed the buttons for download mode and somewhow rebooted my phone (i read about this technique in xda forums). Now, although my phone works but i cannot access the recovery mode as it has got soft-bricked. Thus, i cannot perform a hard reset as it gets caught in that "recovery booting stuck cycle". So, can anyone tell me how to fix this? PLS QUICKLY. aLSO, i don't know much about ADB, so pls explain that too as my friend suggested me to use ADB to fix softbrick but im not sure!!
:crying:

V521 bricked

So far, I decided since my tablet was running slower than it did when I first got it, to reset it. And since I was doing that, might as well unlock the bootloader.
Well, I unlocked the device, attempted to install TWRP, then got the remote failed error, unknown command. Apparently you have to install it via flashify or whatever. Anyhow...
I rebooted the device, but now, all it does is go into recovery, shows the android robot on its side for a split second, then starts flashing white then black on the screen. The only way to stop it is to pull off the battery connector.
The LG mobile tool can see it in download mode, send it the latest kdz image or whatever, works, but still goes back to the same error - boots to recovery then hangs.
Is there a way to fix this? Trying to get it to boot a recovery img didn't work. Erasing all data seemed to have done nothing.
Did you ever unbrick it...?

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