I am Ah Qing, an electronics and computer enthusiast and a "universal repairman" with more than 20 years of repair experience. Here are some of my repair stories.
Past review:
Let’s briefly review the maintenance steps:
Back up phone data-->Unlock BL-->Flash development version-->Open Root-->Install file manager-->Replace related files-->Test-->Cheers!
This day, a friend C asked for help. He said that according to my steps, after reaching the steps to enable Root, the Root installation package could not be downloaded no matter what, resulting in the inability to obtain Root permissions. I suggested that he try again at another time and on another network, but it didn't work. Really helpless, friend C chose to mail it to me for research.
After getting the machine, I found that no matter whether I used China Telecom 4G to download, or used mobile broadband or China Unicom broadband, I could not download the official root package. The progress bar was always 0%, and finally failed. Reflashing the system also has no effect.
It has only been a month since my Xiaomi Mi 5 phone was successfully rooted. Has Xiaomi officially shut down the Root service for this model and completely abandoned this thorn in the side? Or does Xiaomi think this phone is risky and refuses to provide root service? The repair is in trouble.
I failed to live up to the expectations of friend C, and my lifelong reputation was overturned like this? Do you want to force me to use bigger tricks?
Friend C promised to pay technical service fees after the project is completed, so he cannot give up so easily. Almighty Baidu, please help me.
After constant searching, I found the idea of a third-party software Root. This software is called magisk. The idea is as follows:
Get the bootloader package->Download and install magisk->Crack the bootloader package->Flash the bootloader package into the phone->Test successfully->Lick the cup (it’s just a staged victory, don’t toast with fanfare)
The following is a detailed explanation according to the idea. Most of the steps have been explained in detail in the previous article and will not be described in detail. They are represented by abbreviations:
1. Back up mobile phone data (omitted)
2. Unlock BL (omitted)
3. Flash the development version (omitted)
4. Turn on Root (omitted)
4.1 Get the boot.img file . boot.img is actually used to flash the bootloader and can be extracted from the original installation package. Unzip the card flash package we downloaded in step 3, and you can find boot.img. If you downloaded the wire flash package, you need to decompress it twice. After decompression, you can find boot.img in the image folder.
4.2 Get magisk . There are a lot of searches on the Internet, and it is recommended to download the latest official version.
4.3 Crack boot.img . Connect the phone to the computer, set it to file transfer mode, and transfer magisk and boot.img to the root folder of the phone on the computer; then install and run magisk on the phone. After magisk is running, click "Install" behind Magisk, click "Next", click "Select and patch a file", select the boot.img file that has been transferred to the phone, click "Start", and wait until AllDone is prompted, indicating boot .img is cracked successfully. Remember the new file name and location. Do not disconnect your phone and computer.
Flash the 4.4 crack package into the phone . Install adb and fastboot on your computer. There are many resources online, so I won’t go into details. Use a computer to open the phone's memory, find the cracked file generated in the previous step, and copy it to the folder where adb and fastboot are located on the computer.
Then open the cmd command or powershell on the computer and enter the following command:
adb reboot bootloader
fastboot devices
fastboot flash boot 破解的boot文件名
fastboot rebootThe "cracked boot file name" represents the boot file name copied to the computer in the previous step. Please replace it according to the actual situation. After running the above command, the phone will restart.
After the 4.5 restart is successful, root permissions will be obtained. Test successful, lick the cup !
5. Install the file manager (omitted)
6. Replace related files (omitted)
7. Test (omitted)
8. Cheers! (slightly)
After the repair was successful, I specially tested the single card and dual card.
Single China Mobile, China Telecom, and China Unicom cards: 4G and VoLTE.
Main card China Telecom and secondary card China Unicom: The main card has 4G and VoLTE, but the secondary card has no signal.
Main card Telecom, secondary card Mobile: main card 4G and VoLTE, secondary card 2G network. When making a call with any one card, the other card cannot be connected.
Due to my limited energy, the description is not detailed enough, but I guarantee 100% success in real machine testing. If you follow the above method and it is unsuccessful, please don't panic. You can try several more times according to the tutorial. If you don’t have time to work on it or can’t figure it out, you can contact me privately.
Some references:
(Code is not easy to write, please indicate the source when reprinting)