Win10 mobile phone preview version downgrade wp8.1 bricks how to do? Win10 mobile phone preview version downgrade wp8.1 change brick brush machine recovery tutorial

Microsoft's official Windows Phone recovery tool has been updated, but the win10 mobile phone preview version of the downgrade wp8.1 brick problem has not been completely resolved. Let's take a look at the win10 mobile phone preview version downgrade wp8.1 change brick brush machine recovery tutorial, I hope to help everyone!

Previously Microsoft's official Windows Phone recovery tool was able to face the horror of "returning bricks" when it was restored to the device. It could not be properly brushed back. The connected computer was identified as QHSUSB_DLOAD driver.

Although there are a lot of writing, but the key code is only three lines, many details need to be noticed by everyone, pay attention to the whole process of cmd do not close, continue to paste the operation below .

My mobile phone: Lumia520T

Computer system: Windows 8.1 64-bit (it is recommended to operate in this system environment, because the tutorials are all this system)

• First of all, to download and install the software, the driver is downloaded and installed, click here to download. (Only put MPRG_HEX.zip and X2_FlashDriver_Emergency_XP two files, other believe that you can downgrade into bricks know how to download)

Software to download: MPRG_HEX.zip,X2_FlashDriver_Emergency_XP

Installation: EmergencyDownload.inf right click —— install —— OK. (Many people can't install this driver, the solution is to download a Nokia Care Suite software, click here to download) Windows Phone recovery tool, click here to download. (This is the culprit software that causes your phone to become bricks, and remember not to choose the installation path when installing)

Download the firmware package of the corresponding phone, download the firmware package folder directly in C Packing directory

Pre-preparation steps: Create a new dump folder in the C drive

Then start flashing:

Open cmd, step: start (win) &mdash ;—Run (above the shutdown button)——Enter cmd——OK

Then jump out of this interface

Copy and paste and press Enter to run this line Code cd "C:\\Program Files (x86)\\Microsoft Care Suite\\Windows Phone Recovery Tool\\"

Copy and paste code thor2 -mode ffureader -ffufile "C:\\ Rm-913\\RM913_3056.40000.1349.2004_RETAIL_apac_prc_213_04_356607_prd_signed.ffu"-dump_gpt -filedir C:\\dump

The blue part is the name of the .ffu file in the firmware package you downloaded, replacing the file name Into this code, don't forget to change the rm-913 to your phone. .

Remember this RKH code, the rest don't care.

After completing this step, you will find two files GPT0.bin and GPT1.bin in the dump folder created by the C drive. Find it in the MPRG_HEX.zip file you downloaded. The .hex format file of the same RKH code, then rename the GPT0.bin file, name it RKH code, and then copy the two long-named .hex and .bin files to the C drive Windows Phone Recovery Tool. In the file directory, as shown in

Continue to copy and paste and run the code thor2 -mode emergency -hexfile

A74593CEE9F88EDA6D4950CA46A3A634381F9458.hex -mbnfile

A74593CEE9F88EDA6D4950CA46A3A634381F9458. Bin -orig_gpt

Note that these two very long RKH codes are the two .hex and .bin file names you just copied. Don't forget to replace them.

There may be problems here. I have to try several times. I have also encountered it. My solution is to re-run the above three pieces of code several times. If it still doesn't work, restart the computer and the miracle will appear. The phone is now red. Today, the small partner Lumia520 brush in the bar also encountered an error code. The solution was to connect a computer with a data cable, and then succeeded. A red screen brush appeared.

The error code encountered during the period is:

85021 85030 error, I understand that there is a problem with the driver or bin hex file

85034

This error code is The last time I succeeded

84000 This is the computer can not find your phone, the driver problem.

The sign of success is that the command line scrolls a lot. There are probably more than 3 screens.

After the red screen of the mobile phone, this tutorial is over, and then use the Windows Phone recovery tool to connect to the mobile phone. After all, Microsoft has updated and fixed the brick problem.