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Phone suddenly rebooted, not turning on properly and powering off

Micromax Canvas A1 India. Yesterday evening the phone suddenly turned off. Since then whenever I want to turn on, it shows last following screens and turns off again.
{
"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's not rooted. Just upgraded to lollipop over OTA last week. Tried clearing cache from recovery, didn't gelp. Yet to factory reset. But want to know if there is anyway to do it by not factory resetting. Have some data in it.

since you can't really get in to the OS, you can't really do anything besides a factory reset. install a custom recovery if you don't have one already either from ADB or from a toolkit, go on to the recovery, get a backup. Then do a reset. If the data on your phone that you want to save is all app data, google probably already backed them up. plus, with google's restoring feature when starting up the phone and login in to a google account for the first time (or after a reset) you can restore apps, app settings and even wallpapers and homescreen icons just from a touch.

flash the stock rom.
You must have messed things up. Flash the stock lollipop.
to do so, you need to switch your device off, and then press the "Volume up" and "power" button at the same time. then by using volume up select the "fastboot" option. Then connect your phone to your PC.
https://drive.google.com/file/d/0BzS3UbVEklJCVDh3dG9kTFdyT1k/view?usp=sharing Download this ( SDK File ) and install drivers from http://adbdriver.com/downloads/ here. Then open SDK File ( after extracting it ) give it a command "fastboot devices" - if you get something like this,
continue. After this give the command "OEM Unlock". Let it do the thing. After thant do not do anything. stay calm the first boot will take 10-20 mins. Now if your phone is good, then https://www.google.com/url?q=http:/...s-cse&usg=AFQjCNEzNufF7sIICgRpx58wVOczOYDCrw relock your bootloader with this. DO NOT UNLOCK YOUR BOOTLOADER WITH THIS TOOL.
Press thanks if i helped.
---------- Post added at 10:37 AM ---------- Previous post was at 10:15 AM ----------
Another simple way.
https://www.youtube.com/watch?v=W9Co-2QBRZU
This requires an unlocked bootloader and adb drivers.
ADB Drivers once again - http://adbdriver.com/downloads/

Turns out, something was wrong with the Android system. When I turned it on, it would stay black after showing that "process system isn't responding" message. But if I pressed power + volume down, it'll show that it took a screenshot(you can hear the sound and see the white border of the screenshot), which was of course all black. Not exactly sure what went wrong. Factory resetting from recovery fixed it.

Cant oem unlock my nexus 6

So before I start I just wanted to say that I have been rooting and installing roms back at the time when I had my galaxy s3, I knew this stuff before upgrading to my nexus 6.
So the problem as you can see on the title that I cant unlock the oem option, means I cant unlock my bootloader, but there is a twist.
When I bought my nexus, I remember it was 5.0, and there was an update to 5.1, the update was OTA, and I remember the update had problems, it couldn't finish and the phone stayed on 5.0 and you could not
update to 5.1 unless you flash 5.0 again. So I unlocked my bootloader back at the time, and installed 5.0 all over again, and everthing was fine until now(now I am on 7.0)
Now I want to root my phone and install things and I cant do that, because of the oem options, but when i go into fastboot it says device is unlocked, and when I turn my phone on under the google sign there is small open lock sign that I know tells the bootloader is unlocked.
So there is my problem, I cant root it and so on, very sorry of the long post but I think it was necessary so I could explaine my problem.
{
"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"
}

Not quite sure what your problem is. Your bootloader is already unlocked, you just flash twrp via faatboot
Code:
faatboot flash recovery nameoffile.img
then flash SuperSU. If it asks for a password, or you can't find any files on your device in twrp, that means you're encrypted, and will have to completely wipe data on device. You do that by hitting cancel (if it's asking for a password) then go to wipe. Then select format. You'll have to type yes. Now you'll be unencrypted.
As a side note, you may be able to get away with just flashing twrp, and then sideloading the SuperSU zip

dictionary said:
Not quite sure what your problem is. Your bootloader is already unlocked, you just flash twrp via faatboot
Code:
faatboot flash recovery nameoffile.img
then flash SuperSU. If it asks for a password, or you can't find any files on your device in twrp, that means you're encrypted, and will have to completely wipe data on device. You do that by hitting cancel (if it's asking for a password) then go to wipe. Then select format. You'll have to type yes. Now you'll be unencrypted.
As a side note, you may be able to get away with just flashing twrp, and then sideloading the SuperSU zip
Click to expand...
Click to collapse
Thank you very much, apparently it worked even if the oem option is not available, hope I wont get into more troubles.

To start android enter new password

My old phone mi 3w. After i dont what happen after i turn on phone again, its stuck on screen. To start android enter password. I dont have password lockscreen.
After i enter random password its come message:
The password you entered is correct, but unfortunately data is corrupt. And suggest to factory reset.
I have tried:
1. Wipe data from mi recovery
2. Flash from fastboot mi pcsuite english china
3. Enter edl mode
4. Fastboot wipe
5. Flash miflash
Bootloader is locked so i cant install twrp
But all failed. Please help me

isfun00 said:
My old phone mi 3w. After i dont what happen after i turn on phone again, its stuck on screen. To start android enter password. I dont have password lockscreen.
After i enter random password its come message:
The password you entered is correct, but unfortunately data is corrupt. And suggest to factory reset.
I have tried:
1. Wipe data from mi recovery
2. Flash from fastboot mi pcsuite english china
3. Enter edl mode
4. Fastboot wipe
5. Flash miflash
Bootloader is locked so i cant install twrp
But all failed. Please help me
Click to expand...
Click to collapse
Hey @isfun00
Is your Bootloader locked?
Impossible!
Mi3 is opened...
Is it MIUI password screen? Like this:
{
"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"
}
Or Android password screen? Like this:
???
I think last. So you need to boot to TWRP, and after you need make FORMAT DATA (not Wipe data).

Go to twrp and backup data on internal card.
Then fastboot the device.
Type this in command line or whatever : fastboot -w
***Triple star this is gonna eat the internal mem***

Question I locked the bootloader by misstake

Hello, what I did was the following:
1. signed on a new phone with account A, waited a week and unlocked the bootloader
2. signed on the same phone with account B
3. flashed fastboot rom on the device with mi flash tool, but forgot to uncheck the " lock the bootloader"
4. the phone is not starting - i can only get the recovery and the fastboot mode.
5. mi flash tool wont let me flash to locked device . Mi flash tool2 makes me go into Mi assistant mode, starts the instalation process but failes after a few mins ( on the pc i reach ~ 700% but on the phone the bar is on 4.99 or 52.78 % )
6. Xiaomi ADB/Fastboot Tools doesnt want to flash as the device is locked and if i try the OEM UNLOCK button i get "FAILED (status read failed (Too many links))"
7. If I try to unlock the bootloader again and I log account B i get message that i need to log on the phone and wait for a week
If i log accont A i get this :
{
"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"
}
Any Idea how to fix it
Thanks in advance, and sorry if this is the wrong place for this question

As far as I know, the only way is to ask after-sale for help.

ddspj said:
As far as I know, the only way is to ask after-sale for help.
Click to expand...
Click to collapse
They might have more underlying tools to unlock and flash your phone.

fastboot flashing unlock
for most of aosp rom this is the command. but i'm not sure that works on miui. i found a java tool that maybe can help you. https://miui.blog/any-devices/xiaomi-adb-fastboot-tools-one-utility/ i have used to debrand my phone without unlock it

I had to send it to a friend of mine who was able to install chaina rom, using EDL mode, but now, for some reason the IMEI's are gone. I can not add mi account, and for that reason I can't unlock the bootloader, right now I am battaling with the IMEI restoration ( i have the original imei's on the phone case) I am trying to use modem_meta_tool, but with no suxcess . I can't get my phone connected
Long story short, EDL mode was needed to get out of my original situation

seem you have lost imei cause you have installed china rom. or a rom incompatible with your region. try install global rom via edl. but if you lost imei, restore it is not simply... you can try to enter into engineering mode. i'm not sure but there's a function to change imei. but not working for all mtk processors

Question Soft-Bricked - How to Recover?

Hy Guys,
i rly need your helps.
I Installed the Xioami.eu A12 Beta Rom (and used the windows_fastboot_first_install_with_data_format.bat).
The Script runs thorugh the installation process and after that my phone did a reboot.
And now it appears the screen with
"This device is locked,
This device is associated with an existing Mi Account. For security reasons, you need to enter password to verify the device"
but it seems that the touch screen is not working, so i can't select the network or move into the enter password field.
After seome seconds the phone reboots and ends up in the same screen.
1) Bootloader is unlocked
2) Enter Recovery is still possible (and via MiAssistant recognized by windows)
3) Enter Fastboot is possible but not reconized by windows anymore
but i dont know how i can now get my phone back to work ;-(
I hope someone can help my and let me know what i can do.
For the Final Solution i will pay 25€ as a little gift ;-)
//Edit: Ok i can now Enter Fastboot again (via MiAssistent an then "abd reboot fastboot") and its recognized in windows but when i try to reflash the A12 i got a lot of errors:
{
"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"
}
After this reflash, phone still stuck on the "This device is locked" and Touch still not working ;-(
//Edit: If i try to flash A11 via MiFlash i get the following error:

You might have fully bricked it, the initial problem you was just about entering you Xiaomi account password cause your device is protected by find me the xiaomi find device APp

try to recover with the venus engineering rom which was posted

1. Enter in fastboot mode.
2, reflash xiaomi eu 12.6 21.22.10 (and use the windows_fastboot_first_install_with_data_format.bat).
3, phone autostartup
4,first screen go to wireless, set
5.Back, enter yours passord an your xiaomi mi user.

Spegeli said:
Hy Guys,
i rly need your helps.
...
Click to expand...
Click to collapse
You can try two others things because apparently you have access to fastboot mode
1/ Flash lastest Stable Xiaomi .eu A11 from TWRP (Boot TWRP, format data, reboot TWRP, flash Xiaomi.eu)
2/ Flash AOSP ROM from LOS Recovery (but you must have a stable base A11 MIUI before)
and you don't have locked device prompt on the AOSP rom

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Install the modded Xiaomi tool By Francesco Tescari
And Go for the bricked device flash , Voila
The same thing happened to My Mi 10 5G , i managed to unbrick it