Bootloop after recent Android OTA Update

P

pangyaaaaaa

Senior Member
Nov 28, 2012
211
61
0
Jan 22, 2019 at 1:59 PM
Hello Community,

i have a Problem after the installation of the newest android Update (OTA).
The A2 just Boot till the white AndroidOne Logo and it hangs there after a time it seems it shut down itself.

My Device:
-USB Debugging is disabled, its a new testing device.
-I cant boot in recovery mode (vol-UP+Power) just boots to the white androidOne Screen and there it hangs
- I can enter fastboot(VOL-Down+power) mode and the device is listed when i type fastboot devices in my terminal on pc
- when i fire up MiFlash tool it list my device after clicking refresh, if i want flash the latest FW (http://en.miui.com/download-353.html) i get the error:
error:"Flash bluetooth_a error"
- My bootloader is locked.

Question:
How can I flash a offical Android with a locked bootloader?
is it a good idea? or better send it back for a warranty solution (i dont want wait)
is there another way to solve my problem? i really dont know whats the problem is. i did not rooted the device or anything.
would be lovely if someone could help me. with an instruction what i can try.

Thank you very much and have a nice day

Regards :cowboy:
 
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R

Reptant

Senior Member
Jun 5, 2015
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29
0
Jan 22, 2019 at 2:22 PM
If you have enabled 'OEM Unlock' setting in Developer settings, you will probably be good, you can unlock bootloader(oem/flashing/critical) and flash the official ROM ( as per now, 10.0.2.0 )

If not, you have 2 options
-Boot into EDL using short points and flash from there
-Warranty

Same thing happened to a friend's phone, it wasn't touched and just went brick after 10.0.2.0 OTA.
Guess everyone should enable 'OEM Unlock' in case this happens(Data Encrypted anyway, worst case stolen phone better than the chance of brick every time an OTA comes)

edit: If you want to save your data, you obviously shouldn't try the bootloader unlock way...EDL flashing allows flashing without wiping data, but haven't tested that personally
 
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P

pangyaaaaaa

Senior Member
Nov 28, 2012
211
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Jan 22, 2019 at 4:27 PM
Abrilabr said:
Just an advice for everyone reading this message from a Xiaomi Android One device: ALWAYS KEEP UR BOOTLOADER UNLOCKED, IT DOESNT MATTER IF USB DEBUG ISNT ACTIVE, JUST UNLOCK BOOTLOADER

sorry for caps, is just an important thing, i also had the issue but with unlocked bootloader i solved it easily
Click to expand...
Yea, but if you want use it as enterprise Device the open Bootloader is a problem.

ilyas111 said:
Just flash using fastboot

Sent from my LG-V930 using Tapatalk
Click to expand...
that seems not possible with a locked Bootloader (very new phone)
or can you provide a working solution with a locked bootloader? i wont use this EDL thing because its just new and i dont want open it.


Thank you all anyways
 
X

xotob

Member
Dec 18, 2017
7
0
0
Jan 22, 2019 at 10:13 PM
With Xiaomi mi flash tool, you can re active bootloader protection !
Simple flash with this tool with the option "clean and lock critical"
Works for me !
 
Cizzle4

Cizzle4

Senior Member
Nov 25, 2013
393
136
0
Jan 23, 2019 at 8:16 AM
xotob said:
With Xiaomi mi flash tool, you can re active bootloader protection !
Simple flash with this tool with the option "clean and lock critical"
Works for me !
Click to expand...
you had bootloader unlocked, i dont, i cant flash nothing with bootloader locked and i have unchecked the option in debug menù.
 
Last edited:
B

boonc

Member
Feb 22, 2011
20
3
0
Pathumthani
Jan 23, 2019 at 8:42 AM
Reptant said:
If you have enabled 'OEM Unlock' setting in Developer settings, you will probably be good, you can unlock bootloader(oem/flashing/critical) and flash the official ROM ( as per now, 10.0.2.0 )

If not, you have 2 options
-Boot into EDL using short points and flash from there
-Warranty

Same thing happened to a friend's phone, it wasn't touched and just went brick after 10.0.2.0 OTA.
Guess everyone should enable 'OEM Unlock' in case this happens(Data Encrypted anyway, worst case stolen phone better than the chance of brick every time an OTA comes)

edit: If you want to save your data, you obviously shouldn't try the bootloader unlock way...EDL flashing allows flashing without wiping data, but haven't tested that personally
Click to expand...
After got OTA update to 10.0.3.0 and Today i try to unlock bootloader but I can't unlock_critical and I can't flashing unlock
 
U

UnlimitedBB

Member
Nov 3, 2011
43
16
28
Jan 24, 2019 at 3:14 AM
I think if your bootloader is not unlocked, the only possible solution left is to shorting the test points on motherboard. Those who have warranty can return the unit for claim. Yet another mess up from Xiaomi and this will be my last phone from them.
 
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P

pangyaaaaaa

Senior Member
Nov 28, 2012
211
61
0
Jan 24, 2019 at 6:54 AM
UnlimitedBB said:
I think if your bootloader is not unlocked, the only possible solution left is to shorting the test points on motherboard. Those who have warranty can return the unit for claim. Yet another mess up from Xiaomi and this will be my last phone from them.
Click to expand...
I can understand that. I will claim warranty because its new and i dont want do that test point thing.
on private i would buy and recommend xiaomi anyways but if you want these hardware for some enterprise things then better not.

Iam out of this Thread now but if you want talk here some more feel free.. maybe somebody can bring a solution for all you guys who face this problem but i think its not possible without a open BL or the TestPoint Method. :(

Regards and have a nice day :cowboy:
 
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