Xiaomi Redmi Note 9 Pro remains one of the most popular smartphones in the mid-price segment even years after its release. On the forum 4PDA Hundreds of topics are devoted to this device - from discussing custom firmware to finding solutions to rare bugs. But why is this model so loved by users? It's simple: a combination of powerful Snapdragon 720G processor, capacious battery for 5020 mAh and cameras on 64 MP makes it a universal choice for both gamers and amateur photographers.
However, the standard firmware MIUI does not always suit the owners - some want to get rid of advertising, others strive for a clean Android, while others need advanced settings for overclocking or saving battery. On 4PDA you will find not only official updates, but also custom builds like Pixel Experience, LineageOS or Havoc-OS, as well as instructions for unlocking the bootloader and installation TWRP. In this guide we will collect all the most important things: from technical specifications to step-by-step firmware manuals, and also reveal little-known features that will make your Redmi Note 9 Pro even more productive.
Specifications Xiaomi Redmi Note 9 Pro: why is it still relevant?
Even in 2026 Redmi Note 9 Pro does not look outdated thanks to the balanced “filling”. The heart of the smartphone is an 8-core processor Qualcomm Snapdragon 720G with clock frequency up to 2.3 GHz, which still runs modern games at medium settings. For example, Genshin Impact runs on 30 FPS with graphics “Average”, and Call of Duty: Mobile - on “High” with frequency 60 FPS. There is enough memory here: options with 6/64 GB or 6/128 GB, and slot for microSD (up to 512 GB) not hybrid - you can expand the storage without sacrificing a second SIM card.
Screen 6.67" with permission Full HD+ (2400×1080) and update rate 60 Hz covered with protective glass Gorilla Glass 5. Brightness up to 450 nits allows you to comfortably use your smartphone in the sun, and support HDR10 improves video viewing. The main camera deserves special attention: 64MP Samsung GW1 sensor with aperture f/1.9 paired with 8 MP extra wide, 5 MP macro lens and 2 MP depth sensor. In good lighting conditions, the pictures turn out to be detailed, and the night mode copes better than many flagships in 2019–2020.
- 🔋 Battery:
5020 mAhwith fast charging support30 W(complete power supply33 W). A full charging cycle takes ~65 minutes. - 📡 Network: support
4G LTE(ranges 1/3/5/7/8/20/28/38/40/41), Wi-Fi 5 (up to867 Mbit/s), Bluetooth 5.0 And NFC (in the global version). - 🎵 Audio: stereo speakers (one in the conversation module, the second on the bottom), 3.5mm jack for headphones, support aptX And LDAC.
- 🛡️ Protection: certificate IP53 (dust and splash protection), but without full waterproofness.
⚠️ Attention: In some batches Redmi Note 9 Pro (especially Indian assembly) missing module NFC. Before purchasing, check this detail with the seller - Russian stores usually sell global versions (MI 10T Lite rebranding) with NFC.
Official firmware and updates: where to download and how to install
Xiaomi regularly releases updates for Redmi Note 9 Pro, but since 2023 the frequency of their release has decreased. Latest stable version MIUI at the time of writing - MIUI 14.0.4 (Android 12), however 4PDA More recent custom builds based on Android 13/14. Official firmware can be downloaded from the website Xiaomi Firmware Updater or directly through the application System update on a smartphone.
The installation process is standard:
- Download the firmware file (format
.zip) for your model (joyeuse - global version, curtana - Indian). - Transfer the archive to the root directory of the internal memory (not to folders!).
- Go to
Settings → About phone → System update, click on the three dots in the upper right corner and selectSelect firmware file. - Confirm the installation and wait for the reboot (takes ~10–15 minutes).
If the update is stuck on the logo MI, don't panic - sometimes the process takes up to 20 minutes. But if the smartphone reboots in a loop, you will have to use Fastboot or Recovery for manual firmware. On 4PDA There is detailed instructions with a video on restoring damaged devices.
- Official MIUI
- Custom (Pixel Experience, LineageOS, etc.)
- Globally stable
- Chinese (CN ROM)
- Another
Custom firmware for Redmi Note 9 Pro: comparison and instructions
One of the main advantages Redmi Note 9 Pro — active support for custom firmware. On 4PDA most popular:
- 📱 Pixel Experience: clean Android with branded chips Google Pixel (For example, Now Playing for music recognition). Supports Android 13.
- 🔄 LineageOS: minimalistic firmware without unnecessary applications, ideal for fans of “vanilla” Android.
- ⚡ Havoc-OS: customizable build with hundreds of settings (from changing animations to fine-tuning gestures).
- 🎯 MIUI EU: European version MIUI without advertising and Chinese services, but with weekly updates.
To install custom firmware you will need:
- Unlock bootloader via Mi Unlock Tool (you will have to wait 7-14 days after linking your account Mi).
- Install custom recovery
TWRP(version 3.7.0_9-0 for joyeuse). - Make a backup of the current system using
TWRP(sectionBackup). - Flash the firmware and
GApps(if they are not included in the assembly).
Download firmware and TWRP for your model|Check battery charge (>50%)|Save important data on PC|Disable OEM lock in developer settings|Connect original USB cable-->
⚠️ Attention: After unlocking the bootloader, all data is reset, including files in the internal memory. Also some banking applications (for example, Sberbank Online) may stop working due to a trigger SafetyNet. This can be solved by installing Magisk and module Universal SafetyNet Fix.
| Firmware | Android version | Pros | Cons |
|---|---|---|---|
| Pixel Experience | 13 | Pure Android, frequent updates, Google Camera | No MIUI features (for example, two-way charging) |
| LineageOS | 12/13 | Stability, minimalism, long-term support | There are no proprietary features (for example, a wide color gamut) |
| Havoc-OS | 13 | Maximum customization, good performance | There may be bugs with the camera or sensors |
| MIUI EU | 12/13 | All MIUI features without ads, weekly updates | Closed source, sometimes lags |
Hidden features and optimization: how to get the most out of your smartphone
Redmi Note 9 Pro hides several useful features that many people don’t know about. For example, in MIUI there is a mode Ultra Battery Saver, which disables all background processes except calls and SMS, saving up to 30% charge per day. It is activated in Settings → Battery → Super Saving Mode. Another little-known option is Game Turbo, which not only speeds up games, but also blocks notifications, optimizes touch input, and even records gameplay (activated by swiping to the right in the game).
It is useful for photographers to know that the main camera can shoot in RAW (in manual mode Pro) and supports 4K@30fps video. And if you install Google Camera (mod BSG or Urnyx05), you can get better detail in low light conditions thanks to the algorithm Night Sight. Also in MIUI hidden mode Double tap to wake up - it can be included in Settings → Lock screen → Advanced.
How to enable the hidden mode of the engineering menu?
To get to the engineering menu, enter in the application Phone code *#*#4636#*#*. Here you can test sensors, check battery information, and even manually select the network type (for example, force a switch to 4G instead of 3G). Caution: inexperienced changes may disrupt the operation of the communication module!
- 🔧 Performance optimization: Disable animations in
Settings → About phone → MIUI version(press 7 times to openDeveloper Settings, then installWindow animation = 0.5x). - 📵 Battery Saving: Turn on
Adaptive brightnessand limit background app activity toSettings → Battery → Battery usage by apps. - 🎮 For gamers: B
Game TurboactivatePerformance Modeand turn offAuto brightnessduring the game.
If your smartphone starts to slow down, try rolling it back MIUI to an earlier version. Updates often contain bugs that slow down work. On 4PDA There are topics with an archive of stable builds.
Common problems and their solutions
Even such a reliable smartphone has typical “diseases”. One of the most common - overheating when charging or playing games. This is not only due to the processor, but also to ineffective cooling (the metal case heats up quickly). Solutions:
- Remove the case while charging.
- Use original power supply
33 W— cheap analogues heat up more. - Limit FPS in games to
30–40through graphics settings.
Another common problem is fast battery drain. If your smartphone dies within a few hours, check:
- Background processes in
Settings → Battery(often to blame Facebook, Instagram or Google Play Services). - Battery status via app AccuBattery (if the capacity has dropped below
80%, it's time to change the battery). - Availability of updates - in new versions MIUI often optimize energy consumption.
Another common bug - NFC doesn't work after the firmware. This can be cured by installing the correct vendor And firmware for your model. On 4PDA There is instructions to restore NFC via Fastboot.
⚠️ Attention: If there is no sound from the speakers after the update, check your settingsDolby AtmosinSettings → Sound and vibration. Sometimes the profile gets lostMusiconFilm, causing the sound to become quieter.
Comparison with competitors: is it worth buying? Redmi Note 9 Pro in 2026
In 2026 Redmi Note 9 Pro competes with newer models like Redmi Note 12 Pro or Samsung Galaxy A34. However, the old model has significant advantages:
- 💰 Price: Note 9 Pro can be bought for
12–15 thousand rubles, while new smartphones cost 1.5–2 times more. - 🔋 Autonomy:
5020 mAhagainst5000 mAhat Note 12 Pro — the difference in actual use is ~10–15%. - 📷 Camera: The 64-megapixel sensor is still better than many 2023 budget phones in terms of detail.
But there are also disadvantages:
- 🔄 Updates: Official support MIUI will end soon (latest version - Android 12).
- 🖥️ Screen:
60 Hzagainst120 Hzfor new models, the difference is noticeable in games and scrolling. - 📡 5G: There is no support for fifth generation networks (relevant for the future).
If you need a smartphone for social networks, photos and light games - Redmi Note 9 Pro still a great choice. But if it's important 90/120 Hz, 5G or long-term updates, it is better to take a closer look at POCO X5 Pro or Realme 10 Pro.
Redmi Note 9 Pro in 2026 remains the best choice in terms of price/quality ratio for those who do not chase the latest trends. Its strengths - battery life, camera and performance - outweigh its lack 5G And 90 Hz for most users.
FAQ: answers to frequently asked questions
🔹 Is it possible to install Android 14 on Redmi Note 9 Pro?
Yes, but only through custom firmware like Pixel Experience or LineageOS 21. Official update from Xiaomi there won't be. On 4PDA There is themes with ported assemblies, but they may contain bugs (for example, NFC not working or problems with the camera).
🔹 How to unlock bootloader if Mi Unlock Tool doesn't work?
A common problem is the server Xiaomi blocks unlocking due to frequent code requests. Solutions:
- Use a different account Mi (preferably fresh, not tied to other devices).
- Connect to the Internet via a mobile hotspot (sometimes blocking occurs when using home Wi-Fi).
- Try it alternative versions of Mi Unlock Tool (For example,
5.5.224.24).
If all else fails, contact support topic on w3bsit3-dns.com — they often help there manually.
🔹 Why doesn't fast charging work?
The reasons may be different:
- A non-original cable or power supply is used (need
33 Wfrom Xiaomi). - The port is dirty USB-C (clean it with a toothpick dipped in alcohol).
- Overheat protection has tripped (turn off your smartphone for 10 minutes).
- The settings in
Settings → Battery → Fast charging(enable the option again).
If the problem persists, check the condition of the battery in AccuBattery — with wear >30%, the charging speed drops.
🔹 How to enable developer mode and what can be configured there?
To activate developer mode:
- Go to
Settings → About phone → MIUI version. - Click on a line
MIUI version7 times in a row. - Return to the main settings menu - a new item will appear
For developers.
Useful settings:
USB Debugging- to work with ADB.Window/transition animation = 0.5x— speeds up the interface.Background processes = Standard limit- saves battery.GPU acceleration- enables forced use of the GPU (useful for games).
🔹 Where to buy original spare parts (screen, battery, camera)? summary>
Original spare parts for Redmi Note 9 Pro you can order:
- On AliExpress (shops Xiaomi Original Store or Mi Global Store).
- At service centers Xiaomi (list on official website).
- On 4PDA on topic "Spare parts for Redmi Note 9 Pro" (they often sell used parts in good condition).
Important: When replacing the battery, choose models with a capacity of at least 5000 mAh and certificate CE/RoHS. Cheap analogues serve 2–3 times less than the original.
5000 mAh and certificate CE/RoHS. Cheap analogues serve 2–3 times less than the original.