Xiaomi Redmi 3, released in early 2016, is still popular due to its excellent price-performance ratio at the time. However, over time, the standard operating system may no longer meet the user’s needs: bugs appear, some applications stop working, or you just want to upgrade to a more recent version of MIUI. In such situations, the only right solution is a complete flashing of the device.
The process of replacing software with Redmi 3 (codenamed ido) requires careful and follow the instructions, as the model has its own features that distinguish it from the newer gadgets of the brand. Errors in the preparation or selection of a firmware file can lead to the fact that the phone will turn into a brick and stop responding to commands. In this material, we will analyze all the nuances, from unlocking the bootloader to the final configuration of the system.
Before you start taking action, you need to realize that any interference with the code carries risks. The Fastboot firmware procedure completely cleans the internal memory of the device, so saving a backup of personal data is a must. We will consider both the official method through the computer and the options for local updates so that you can choose the most appropriate scenario for your situation.
Preparation of the device and assembly of necessary tools
Success of the operation 90% It depends on the quality of the workspace and the software. You need a personal computer or laptop with Windows operating system, working. USB-cable (preferably original or high-quality analogue with thick wires) and a fully charged smartphone battery. 60-70%, As the data processing process can be high.
You need to install drivers on your computer to work with Xiaomi devices. Most often they are installed automatically with the firmware, but in some cases you need to manually install through the Device Manager. You will also need a Mi Account that should be tied to the phone at least 7 days (or 168 hours) before unlocking the bootloader if you plan to use the official method.
You need to download the archive with the operating system to work with firmware files. It is important to distinguish between the two main types of firmware for Redmi 3: Recovery (.zip format) and Fastboot (.tgz format). The first is installed through the recovery menu, the second through a special download mode and program on the PC. You can download current versions from the official miui.com portal or trusted third-party resources such as XiaomiFirmware.
☑️ Firmware readiness
Unlocking the bootloader (Bootloader)
The official firmware of Xiaomi devices is impossible without an unlocked bootloader. It is a security mechanism that prevents the installation of unofficial software. For Redmi 3, this procedure is mandatory if you want to change the firmware region (for example, from China to Global) or install customized Recovery. The process requires applying through a special application Mi Unlock.
First, you need to activate the developer mode. → About the phone and seven times quickly click on the version MIUI, until the notice "You've become a developer" appears, then in the "Extended Settings" menu, look for "Developers" and turn on the "Factory Unlock" option» (OEM Unlock) and “Debugging by USB». Then, link the device to the account in the menu “Mi Unlock Status».
Once you have your account tied, you have to wait until the manufacturer has set the time limit. Usually it's 7 days, but in some cases the timer can be increased to 30 days or 360 hours. After that time, plug your phone in with the switched off, press Volume down + Power to enter Fastboot mode. Connect the cable to your PC, launch the Mi Unlock utility, log in to your account and press the unlock button.
⚠️ Note: The bootloader unlock process automatically performs a full Wipe Data reset. All photos, contacts, and apps will be deleted without recovery unless you backed up in advance.
What if Mi Unlock says “Account isn’t bound”?
Installation of firmware through Fastboot (Mi Flash Tool)
Fastboot is the most reliable method of firmware, and allows you to completely clean the system of errors and old debris. To implement this method, you will need Mi Flash Tool and an unpacked firmware archive of the.tgz format. Note that the archive should be unpacked into the root of the disk or into a folder with a short path, for example, C:\mi_rom, So that there are no Cyrillic symbols on the way.
Put Redmi 3 into Fastboot mode, holding down Volume and Power on the device off at the same time. Connect it to your computer. Windows Device Manager should have a connected gadget in Android Devices or QDLoader. If the drivers don't stand up automatically, set them up manually, pointing the way to the driver folder inside the Mi Flash archive.
Launch the Mi Flash Tool on behalf of the administrator. Press the Refresh button to show the connected device (the serial number will be displayed). Then click Select and specify the path to the unpacked firmware folder. At the bottom of the window, select the firmware mode: clean all (complete cleaning) or clean all and lock (clean and lock the bootloader).
| Firmware mode | Data retention | Locking the loader | Recommendation |
|---|---|---|---|
| clean all | No (full reset) | No (remains open) | Recommended for Global ROM |
| clean all and lock | No (full reset) | Yeah (closing) | Only for China ROM |
| save user data | Yes (data retained) | No. | Not recommended for changing versions |
Once you select the settings, press the "Flash" button, and the recording process will begin, which can take 200 to 600 seconds, during which time it is strictly forbidden to turn off the cable or interrupt the program, after completing the column "Result" will appear the inscription "success", and the phone will automatically restart. The first download can last up to 10-15 minutes.
Update via Recovery menu (local method)
If you already have global firmware installed and you want to simply upgrade to a newer version without using a computer, Recovery will do the trick. Download the firmware file in.zip (Recovery ROM) format. Importantly, this method only works for updating within one firmware type (Global to Global) or provided that the versions are compatible.
Copy the downloaded file to the root of the phone's internal memory. Rename it to update.zip for convenience, although this is not always necessary. Next, go to the update menu: Settings → About Phone → MIUI Version. Click on the three dots in the upper right corner and select "Select a firmware file." Find your archive and confirm the action.
If the standard update menu doesn’t see the file or refuses to install it because of the signature check, you’ll have to use Recovery mode manually. To log in, press Volume Up + Power. From the menu, select the language (English or Chinese), then “Wipe Data” to clean, then go back and select “Install” (or “Connect with MIAssistant” to connect to your PC in Recovery mode if you use Mi Flash in Recovery mode).
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If the standard update menu gives you an error called "Can't verify update," try renaming the firmware file to update.zip and putting it in the root of internal memory rather than in the folder. Also make sure that the battery is above 50%.
Solving Typical Errors and Problems
In the process of firmware Xiaomi Redmi 3 users often encounter error codes. One of the most common is error: can't load libxerces-c.dll. It occurs if the paths to the files contain Cyrillic or special characters. The solution is simple: move the firmware folder to the root of the C disk and rename it, leaving only Latin letters, for example, C:\rom.
Another common problem is the Recovery mode error 7 (“Downgrade not allowed”). This means that you are trying to install an older version of Android or MIUI than you currently install, which is prohibited by security policy. To circumvent this limitation, you need to have an unlocked bootloader and use the Fastboot mode with data cleaning, or edit the updater-script file inside the firmware archive (delete the version check strings).
If the phone goes into an endless bootloop after the firmware, try a full Wipe All Data reset via the Recovery menu. If that doesn't help, it may have been the wrong firmware model (e.g. Redmi 3S instead of Redmi 3, although they are close, but hardware differences can cause crashes), in which case only flashing the stock version through Fastboot will help.
⚠️ Note: If you have an anti-rollback error, do not continue to run the firmware, which means you are trying to install software with a lower security index than the current one).
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Most of the Redmi 3 firmware errors are due to the wrong file type (Fastboot instead of Recovery) or the presence of Cyrillic on the way to the firmware folder.