Bootloader problem (plz help) - Nexus 7 Q&A, Help & Troubleshooting

hi
2 days back when i awake morning my tablet wont turn on and stuck on X logo and i have allow to go to recovery and bootloader and when i want to wipe its stuck on erase/data and nothing happend
yesterday i flash it and it failed because the bootloader lock now it go only in bootloader and show message boot failed then i try to unlock and show uknown error
my device was 4.2.2 stock and not rooted and lock bootloader
plz help me
sorry for my bad english

So you've tried this unbrick method?
http://forum.xda-developers.com/showthread.php?t=2072732&highlight=unbrick
If that doesn't work, you're in the line of people with similar problems, looking for a way to restore bootloader with nvFlash.

ameinild said:
So you've tried this unbrick method?
http://forum.xda-developers.com/showthread.php?t=2072732&highlight=unbrick
If that doesn't work, you're in the line of people with similar problems, looking for a way to restore bootloader with nvFlash.
Click to expand...
Click to collapse
yes i did when i want to unlock bootloader it show a unknwon error
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
What is Nvflash?
is there a quide for that?

plz help

plz somebody help me

can somebody help me?????

Nobody!!!!!

Try and look in any of these threads and see if you can sort something out:
http://forum.xda-developers.com/showthread.php?t=1781250
http://forum.xda-developers.com/showthread.php?t=2379283
http://forum.xda-developers.com/showthread.php?t=2375694
Sounds like you may have to reflash a complete stock factory image, including your bootloader. Those threads should be of help.
yes i did when i want to unlock bootloader it show a unknwon error
Click to expand...
Click to collapse
You should start over completely and make sure you have the right factory image and that all partitions are formatted etc. Start getting it to boot with stock image and locked bootloader, and take it from there.

djalireza_mixer said:
hi
2 days back when i awake morning my tablet wont turn on and stuck on X logo and i have allow to go to recovery and bootloader and when i want to wipe its stuck on erase/data and nothing happend
yesterday i flash it and it failed because the bootloader lock now it go only in bootloader and show message boot failed then i try to unlock and show uknown error
my device was 4.2.2 stock and not rooted and lock bootloader
plz help me
sorry for my bad english
Click to expand...
Click to collapse
u r not first one to get problem so search for answer
anyway >> Use NexusRootToolkit to repair it (unlock, root, lock, flash, recover to stock and ...)
:good:

Related

tried turning s-off, phone keeps rebooting :(

All commands typed into terminal emulator were double checked and were typed correctly, i do have root and S OFF but it keeps rebooting!!
http://forum.xda-developers.com/showthread.php?t=835777&page=1
Was using this thread to root my phone. Check did that succesfully
tried the S-off, check, then proceeded to "power off,power on" phone...and now it just constantly reboots!!!!.... i can however access Bootloader and i see that my S IS OFF....but the phone is stuck in a rebooting loop :S how do i fix that? need some help...not trying anything right now as fear to brick a 2nd phone.
edit** i was going to do a factory reset...but what else can i do? someone help me out
When i boot into bootloader, it shows a quick couple lines of text saying "no image" and some other lines....thne disappears in 1-3 seconds and send me to the normal bootloader screen where it shows, Hboot, fastboot, recovery, factory reset, simlock, system info, image crc.
edit* something about no pc10 or pcdiag img or wrong image.
for those wondering it is S OFF
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
hmm instead of Fastboot at the top, i have it saying HBOOT then fastboot, recovery, factory reset, simlock, system info, image crc.
I see this IMAGE
Referenced Here http://forum.xda-developers.com/showpost.php?p=9112375&postcount=142
He said his is working....i did everything like the instructions said and get the above image....so why is my phone keep rebooting?
Sent from my HTC Vision using XDA App
v8pwrdz28 said:
Did u flash the correct kernel afterward?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
No not yet, when the boot started looping, i decided to post here. what do i need to do? im using a bell htc desire z, i rooted, then did S off, got stuck in htc boot loop, and now am sitting here.
edit fioxed http://forum.xda-developers.com/showthread.php?p=9330530#post9330530

[Help] My phone can log in to bootloader but can't start.

Few days ago, while charging I found my phone can't load any app. I tried to restart and it stuck at Nexus logo screen. I think I've got boot loop situation, so I rebooted in to bootloader mode and tried to flash it's stock rom following efrant's guide http://forum.xda-developers.com/nexus-4/general/how-to-how-to-flash-factory-image-t2010312 but it failed.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Has anyone faced the same problem and know how to fix it? I'm afraid the main board has crashed but I can still boot in to bootloader so I really confused.
hungtimb said:
Few days ago, while charging I found my phone can't load any app. I tried to restart and it stuck at Nexus logo screen. I think I've got boot loop situation, so I rebooted in to bootloader mode and tried to flash it's stock rom following efrant's guide http://forum.xda-developers.com/nexus-4/general/how-to-how-to-flash-factory-image-t2010312 but it failed.
Has anyone faced the same problem and know how to fix it? I'm afraid the main board has crashed but I can still boot in to bootloader so I really confused.
Click to expand...
Click to collapse
Recovery to a stock ROM may cause your phone lock again, please ensure you phone is in unlock status first (you may see an unlocked padlock at the bottom of the screen after power on), and try flash the recovery again.
nabor said:
Recovery to a stock ROM may cause your phone lock again, please ensure you phone is in unlock status first (you may see an unlocked padlock at the bottom of the screen after power on), and try flash the recovery again.
Click to expand...
Click to collapse
You mean the bootloader?? yes, I have it unlocked. In fact, i've just locked it back and unlocked again. But it still unable to flash anything.
hungtimb said:
You mean the bootloader?? yes, I have it unlocked. In fact, i've just locked it back and unlocked again. But it still unable to flash anything.
Click to expand...
Click to collapse
Then try to flash the factory image, this will truly reset your phone:
https://developers.google.com/android/nexus/images
Hopping this will help you
nabor said:
Then try to flash the factory image, this will truly reset your phone:
https://developers.google.com/android/nexus/images
Hopping this will help you
Click to expand...
Click to collapse
Thanks, but that won't help either.
hungtimb said:
Thanks, but that won't help either.
Click to expand...
Click to collapse
Doesn't work? uh... I have no idea for now...
hungtimb said:
You mean the bootloader?? yes, I have it unlocked. In fact, i've just locked it back and unlocked again. But it still unable to flash anything.
Click to expand...
Click to collapse
Try to unlock it again,Install CWM and flash the original ROM into the machine.
Having and unlocked bootloader and not being able to flash the stock factory images is a bad sign. Usually it means a corrupted emmc chip. Can you send it to RMA?
Erovia said:
Having and unlocked bootloader and not being able to flash the stock factory images is a bad sign. Usually it means a corrupted emmc chip. Can you send it to RMA?
Click to expand...
Click to collapse
Forgot to remind 1 more thing,Lock before sending to RMA...
androidvillage said:
Forgot to remind 1 more thing,Lock before sending to RMA...
Click to expand...
Click to collapse
Jeez, a month late for that bit of information.
Sent from my Nexus 5 using XDA Free mobile app

Secure boot error after reverting to KitKat via TWRP backup

Hey everybody! Please, I need urgent help!
So, yesterday, I upgraded my G2 D802 from rooted stock KitKat to the official European Lollipop, v30b. Before that, I made a TWRP backup of everything.
So, I rooted Lollipop, installed TWRP, and was about to install the new Xposed for Lollipop. Then, **** started freaking out and "LGSmartCover" kept crashing continuously, making it virtually impossible to navigate the UI.
Soooooo, I decided to revert back to KitKat via the TWRP backup.
Everything SEEMED fine, but now I cannot boot. I get the LG logo, then this message appears:
ERROR : boot certification verify
[800]_______________________
[850]
[900] Secure booting Error!
[950] Cause : boot certification verify
[1010]
[1060]_________________________
Click to expand...
Click to collapse
I do not seem to be able to enter download mode or recovery either.
My computer does recognise it as "qhsusb_bulk" when plugged in, though.
What do? I'll be eternally grateful if somebody can help me solve this.
UPDATE: I somehow managed to get into this "Hardware key control mode" by pressing and holding all three hardware buttons at once, while plugging the phone into the computer.
UPDATE2: Somehow, I managed to boot into Download mode, after doing the same thing over and over again! Trying to recover via LGMobileSupportTool now..
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
same error
How did you solve it ?
Hi,
I had a similar problem and I managed to repair the phone by using the TOT method with LG FlashTool v1.8 by reaching download mode.
Good luck!
If you can fully enter download mode(first screen and then the second screen),then try to flash a stock rom with LG Flashtool(KDZ method) or TOT method.
Since you were using TWRP,official LG Update tools will kill your phone if you try to flash the stock rom with them.
i have the same problem and i dont know how to reach download mode. when i connect my phome to the pc, it shows the same secure boot error. any help?
davvmaulana said:
i have the same problem and i dont know how to reach download mode. when i connect my phome to the pc, it shows the same secure boot error. any help?
Click to expand...
Click to collapse
Supposing the drivers are installed in windows, you need to have the phone plugged in to comp. and then hold volume-up+power until you get the "download mode" on your phone's screen

Redmi 4 pro no longer wants to turn on -_-

Hello community ,
I install TWRP on my redmi 4 pro for the flash,
but when I finished the installation I clicked on "erase system" on TWRP
I only want to re-flash but it does not work
just the MI logo appears on the screen and it isturn off
I can put it in FASTBOOT and never in DONWLOAD MODE :crying:
I tried the software miUnlock download and adb commands but still nothing
Help me please
NB: I have already received the XIAOMI unlocking SMS
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
It is still locked or you don't the false, false, false? After oem info it said failed and then try flashing twrp makes no sense
Reflash stock fastboot rom with miflash or use a deep flash cable. And then unlock it correctly
If nothing works you have to open your device and use testpoint method.
really nothing works.
miFlash gives me an error in red.
I already tried with the flash cable qualcomm but the phone when it vibrates it displays the MI logo and is off.
I tried recovery twrp.img but still the same error message
Method MiFlash:
Rom FASTBOOT for Redmi 4 prime: markw_global_images_V8.5.4.0.MBEMIED_20170925.0000.00_6.0_global
------------------
------------------
-------------------
Fastboot method won't work as your bootloader is locked. Try with deep flash cable or test point method.
Trying to flash twrp also not gonna work.
kibria.mgk said:
Fastboot method won't work as your bootloader is locked. Try with deep flash cable or test point method.
Trying to flash twrp also not gonna work.
Click to expand...
Click to collapse
I tried the deep flash cable:
click on the + and - button of the volume
plug in the phone and click on the button of the deep flash cable until the phone vibrates ... except that ... when it vibrates it displays the MI logo and ends ... but it is visible on the manager peripheral
Don't use "wipe_all_except_storage".
Use wipe_all only.
N1ck474 said:
Don't use "wipe_all_except_storage".
Use wipe_all only.
Click to expand...
Click to collapse
You can explain to me please
Nobody can help me?

Did i just Bricked my phone trying to install lineage OS ?

Hello guys, sorry for not great wording, english is not my main lenguage
i'm kinda desperate to solve my situation
i had my G7 (regular one) with Root (magisk) and bootloader unlocked, in a attempt to install Linage OS who allways didn't worked (invalid zip file), i tried to change the slot to "B" on TWRP, i know the wasn't the smastest thing to do, but i din't imagined the my OEM could be locked
now i can't pass trouth this screen on the image and all the attempts to go to the stock room get stuck on the OEM mode (locked)
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
i've read alot and din't find anyone with the same problem as myself, if someone could point me to a direction i would apreciate, thx in advance
A little bit of a update
for what i can undestand, my bootloader now is locked and this is the problem, since i'm trying to unlock again so i can flash TWRP one more time.
when i try to put the active slot on "A" ("fastboot --set-active=x") the erro that i get is
"(bootloader) Command is not allowed
FAILED (remote failure)"
if anyone knows how to unlock my bootloader form that screen, i would apreciante any kind of help
You can't. Unless OEM unlock is ticked in the developer options setting already.
I've seen this on g7 power and one was to solve problem waas let phone die then charge and power up problem is you didn't flash copy partitions zip file and their is no active bootloader in slot b
i Was able to solve this problem flashing a blank flash for my device
thankfully the telegram group for this phone was able to save mine
thx anyway
Hi,
I have the same problem. But, as I see in the forum rules, Telegram links are forbidden so I cannot ask you for it.
Could you please explain how did you do it? Do I need a blank flash file?
Thanks!
586968 said:
i Was able to solve this problem flashing a blank flash for my device
thankfully the telegram group for this phone was able to save mine
thx anyway
Click to expand...
Click to collapse
luis4a0 said:
Hi,
I have the same problem. But, as I see in the forum rules, Telegram links are forbidden so I cannot ask you for it.
Could you please explain how did you do it? Do I need a blank flash file?
Thanks!
Click to expand...
Click to collapse
Look your inbox
hey, i have the same problem, archived it the same way you did=)
can you explain the blank flash to me?
thanks
*Edit:
found it out for myself in the mentioned telegram group. solution is:
1. Download the blankflash.zip attached and unpack it.
2. Run the fastboot command
Code:
fastboot oem blankflash
3. Run the blankflash.bat File
4. Reboot
Important Note: This will only work if your bootloader was unlocked before the softbrick occured. Don't try when the bootloader has never been unlocked!

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