Lumia 720 brick while unlocking bootloader

[pikachu117788]

People, please help!
I decided to unlock my lumia 720, I did everything according to the instructions. At first everything went fine, but then wpinternels got stuck on flashing done. rebooting. Then the computer just stopped seeing the phone. Now the phone does not turn on and does not charge, generally like a dead one. Even wdrt doesn't see it. Is it a brick or not? Help!

 

[pikachu117788]

People, please help!
I decided to unlock my lumia 720, I did everything according to the instructions. At first everything went fine, but then wpinternels got stuck on flashing done. rebooting. Then the computer just stopped seeing the phone. Now the phone does not turn on and does not charge, generally like a dead one. Even wdrt doesn't see it. Is it a brick or not? Help!

 

[pikachu117788]

People, please help!
I decided to unlock my lumia 720, I did everything according to the instructions. At first everything went fine, but then wpinternels got stuck on flashing done. rebooting. Then the computer just stopped seeing the phone. Now the phone does not turn on and does not charge, generally like a dead one. Even wdrt doesn't see it. Is it a brick or not? Help!

 

[JoachimP]

Hi,
please have a look into your device manager. If you find something like Qualcomm Boot loader device, proceed with one of those many instructions "unbrick without JTAG". I think your Lumia is in emergency mode.
You may also look for thor2.exe on your computer, it is in the Windows Device Recovery Tool subdirectory. Open a command line window, type thor2>help.txt and open help.txt with a text editor. Look up emergency mode. You will find something like [thor2 -mode emergency -hexfile D:\Packages\Products\RM-994\FAST8930_BATMANROW.hex -mbnfile D:\Packages\Products\RM-994\RM994_msimage_v1.0.mbn]. Notice, that is for my phone, not a 720. File name and directory entries must be changed to your needs, but hopfully you will understand the pattern.

Good luck!
Joachim

 

[pikachu117788]

I'm found hex and mbn files for my lumia 720, changed your command for my files, but thor2 wrote this log:

C:\Program Files (x86)\Microsoft Care Suite\Windows Device Recovery Tool>thor2 -
mode emergency -hexfile "E:\720\hex.hex" -mbnfile "E:\720\mbn.mbn"
THOR2 1.8.2.18
Built for Windows @ 13:36:46 Jun 16 2015
Thor2 is running on Windows of version 6.2
thor2 -mode emergency -hexfile E:\720\hex.hex -mbnfile E:\720\mbn.mbn
Process started Sat Jun 03 13:32:23 2023
Logging to file C:\Users\pikachu\AppData\Local\Temp\thor2_win_20230603133223_Th
readId-4876.log
Debugging enabled for emergency

Initiating emergency download
Operation took about 20.00 seconds.

THOR2_ERROR_CONNECTION_NOT_FOUND

THOR2 1.8.2.18 exited with error code 84000 (0x14820)

C:\Program Files (x86)\Microsoft Care Suite\Windows Device Recovery Tool>

 

[pikachu117788]

Hi,
please have a look into your device manager. If you find something like Qualcomm Boot loader device, proceed with one of those many instructions "unbrick without JTAG". I think your Lumia is in emergency mode.
You may also look for thor2.exe on your computer, it is in the Windows Device Recovery Tool subdirectory. Open a command line window, type thor2>help.txt and open help.txt with a text editor. Look up emergency mode. You will find something like [thor2 -mode emergency -hexfile D:\Packages\Products\RM-994\FAST8930_BATMANROW.hex -mbnfile D:\Packages\Products\RM-994\RM994_msimage_v1.0.mbn]. Notice, that is for my phone, not a 720. File name and directory entries must be changed to your needs, but hopfully you will understand the pattern.

Good luck!
Joachim

I'm not have this in device manager. Computer doesn't see my phone.

 

[JoachimP]

Did you try a different USB cable, different USB port on your computer (rear side if you have a desktop or tower pc)? Did you pull the battery or press volume down ans power switch at the same time for about 20 seconds to make a power reset?
You might pn me a screenshot of your device manager.

 

[pikachu117788]

I tried 4 different cables and different usb connectors on my laptop, still doesn't help. I also tried to hold the keys, the phone vibrates and nothing else happens. I can't remove the battery because on the lumia 720 it's not removable and I don't have a screwdriver to remove the back cover.

 

[pikachu117788]

I am using windows 8.1 64 bit on my laptop. When you connect the phone in the device manager, nothing changes.

 

[pikachu117788]

I tried 4 different cables and different usb connectors on my laptop, still doesn't help. I also tried to hold the keys, the phone vibrates and nothing else happens. I can't remove the battery because on the lumia 720 it's not removable and I don't have a screwdriver to remove the back cover.
I am using windows 8.1 64 bit on my laptop. When you connect the phone in the device manager, nothing changes.