The Redmi K20 / Mi 9T (codename davinci), launched in 2019, brought a true flagship experience to the upper mid-range segment. Its most celebrated feature was the motorized pop-up selfie camera, which allowed for a gorgeous, uninterrupted 6.39-inch AMOLED display with no notch or hole-punch. Powered by the highly capable Qualcomm Snapdragon 730 chipset, it delivered smooth performance for gaming and daily tasks. With its stunning “aura prime” glass design and in-display fingerprint scanner, the davinci remains a beautifully designed and much-loved device. This page provides a complete collection of official fastboot ROMs for China, Global, India (davinciin), Russia, and EEA, as well as the popular Xiaomi.eu custom ROM.
Important: You must verify your device codename. This firmware is for the standard davinci / davinciin models only. It is not compatible with the Pro versions (raphael / raphaelin). Flashing the wrong firmware will hard brick your phone. The Indian model has a specific codename, davinciin.
Quick Device Specs
- Device: Redmi K20 / Mi 9T (davinci / davinciin)
- Release year: 2019
- Chipset: Qualcomm Snapdragon 730
- Display: 6.39″ Super AMOLED, HDR, Notch-less Full Screen
- Battery: 4000 mAh, 18W fast charging
- Original MIUI: Android 9 (Pie), MIUI 10
Required Downloads
| File / Tool | Download Link |
|---|---|
| Xiaomi Mi Flash Tool | Download Latest Version |
| Xiaomi USB Drivers | Included with Mi Flash Tool |
| Bootloader Unlock Tool | Official Mi Unlock Page |
Fastboot ROMs
| Region | Build | Android | Release Date | Download | Codename |
|---|---|---|---|---|---|
| China | V12.5.2.0.RFJCNXM | 11.0 | 2021-11-03 | Download | davinci |
| Global | V12.1.4.0.RFJMIXM | 11.0 | 2021-07-27 | Download | davinci |
| India | V12.1.4.0.RFJINXM | 11.0 | 2021-07-13 | Download | davinciin |
| Russia | V12.1.2.0.RFJRUXM | 11.0 | 2021-08-26 | Download | davinci |
| EEA | V12.1.1.0.RFJEUXM | 11.0 | 2021-09-03 | Download | davinci |
| Xiaomi.eu (Custom) | V12.5.2.0.RFJCNXM (Based) | 11.0 | — | Download | davinci |
How to Flash
For a step-by-step process, drivers, and troubleshooting, read our Ultimate Mi Flash Guide.
- Boot into Fastboot mode (Power + Volume Down).
- Extract the firmware (.tgz file) and select the main folder containing the
/imagesdirectory in Mi Flash Tool. - Select clean all for a safe installation (avoid clean all and lock unless you are on the correct stock ROM for your specific region).
FAQs
Q1. What’s the difference between the Redmi K20 and the Mi 9T?
They are the same device in terms of hardware. “Redmi K20” was the name for the Chinese and Indian markets, whereas “Mi 9T” was the name used for the global and European releases.
Q2. Why does the Indian ROM have a different codename (davinciin)?
The Indian variant (davinciin) includes minor software and network configurations specific to the region. For optimal performance and network connectivity on an Indian device, it is always best to use the dedicated davinciin firmware.
Q3. Can I flash a Mi 9T Pro / Redmi K20 Pro (raphael) ROM on this device?
No, this is extremely important. The Pro model (raphael) uses the flagship Snapdragon 855 processor and has completely different firmware. Flashing a Pro ROM on a non-Pro device will cause an immediate and irreversible hard brick.
Q4. The Xiaomi.eu ROM is a .zip file. How is it installed?
The .zip package is a recovery-flashable ROM. You cannot use Mi Flash Tool. You must first unlock your bootloader, install a custom recovery like TWRP, and then flash the .zip file from within the recovery’s interface.
Troubleshooting
- Drivers: If your PC does not recognize the phone in fastboot mode, reinstall the Xiaomi USB drivers, run Mi Flash Tool as Administrator, or try a different USB port (USB 2.0 is often more stable).
- Fastboot errors:
- “error: not catch checkpoint” → This common error means you have selected the wrong folder. In Mi Flash Tool, be sure to select the parent folder that was created when you extracted the .tgz file, not the images folder inside it.
- “Anti rollback error” → You are attempting to flash an older firmware version than what is currently on the device. Xiaomi’s Anti-Rollback Protection (ARB) prevents this.
- EDL mode: For a hard-bricked phone that won’t enter fastboot, EDL mode is the last resort. It requires using hardware test points and is recommended for advanced users only.
