The Xiaomi 15T Pro (codename klimt) is a flagship-class device with a 6.83‑inch 144 Hz AMOLED display, MediaTek Dimensity 9400+ chipset, Leica-tuned triple camera system, and a 5500 mAh battery with 90 W wired and 50 W wireless charging support. Despite its powerful hardware, early HyperOS 2 builds have generated user complaints about battery drain, overheating, network instability, notification delays, and occasional UI stutters on Xiaomi and HyperOS-focused communities.
The official HyperOS 2.0.203–2.0.206 fastboot packages and the newer HyperOS 3.0.5.0 Android 16 EEA build for klimt focus on system stability, bug fixes, modem reliability, and updated security patches, making them ideal for clean installs or repairs via fastboot flashing.
Xiaomi 15T Pro Firmware Details
| Device Name | Xiaomi 15T Pro |
|---|---|
| Codename | klimt |
| Chipset | MediaTek Dimensity 9400+ (3 nm, Cortex‑X925 CPU, Immortalis‑G925 MC12 GPU) |
| Display | 6.83″ AMOLED, 2772 × 1280, up to 144 Hz, 3200 nits peak |
| Battery & Charging | 5500 mAh, 90 W wired HyperCharge, 50 W wireless HyperCharge |
| Base OS Versions | Android 15 with HyperOS 2.2; Android 16 with HyperOS 3.0 |
| Regions Covered | Global, Russia, Indonesia, EEA (Europe), Taiwan, Turkey, Japan |
| Firmware Types | Official fastboot ROMs (.tgz) from Xiaomi bigota servers |
| Key Builds | OS2.0.203.0 / 204.0 / 205.0 / 206.0 (Android 15) and OS3.0.5.0 (Android 16 EEA) |
| Changelog Highlights | System stability optimization, “errors fixed in some cases”, October 2025 security patch for OS2.0.20x; signal instability and battery issues addressed in OS3.0.5.0 EEA |
| Bootloader Status | Bootloader unlock required for fastboot flashing on klimt |
| Recommended Flash Tools | Xiaomi Mi Flash Tool or included fastboot scripts (flash_all.bat) on a Windows PC |
Download Official Firmware for Xiaomi 15T Pro (klimt)
| Filename | Region | Android / HyperOS | Build Date | File Size | Flashing Type | Notes | Download |
|---|---|---|---|---|---|---|---|
| klimt_global_images_OS2.0.206.0.VOSMIXM_20251009.0000.00_15.0_global_e43c2b744f.tgz | Global (MIXM) | Android 15 / HyperOS 2.0.206.0 | 09 Oct 2025 | ≈ 8.73 GB | Fastboot clean install / unbrick | Global multi‑region build with October 2025 security patch and system stability fixes. | Download OS2.0.206.0.VOSMIXM (Xiaomi Server) |
| klimt_ru_global_images_OS2.0.204.0.VOSRUXM_20251103.0000.00_15.0_ru_7e937a753a.tgz | Russia (RUXM) | Android 15 / HyperOS 2.0.204.0 | 03 Nov 2025 | ≈ 8.58 GB | Fastboot | RU regional modem and configuration with stability optimization and October 2025 patch. | Download OS2.0.204.0.VOSRUXM (Xiaomi Server) |
| klimt_id_global_images_OS2.0.204.0.VOSIDXM_20251028.0000.00_15.0_id_d8b05b1acd.tgz | Indonesia (IDXM) | Android 15 / HyperOS 2.0.204.0 | 28 Oct 2025 | ≈ 8.12 GB | Fastboot | Indonesian variant tuned for local networks, includes security and stability fixes. | Download OS2.0.204.0.VOSIDXM (Xiaomi Server) |
| klimt_eea_global_images_OS3.0.5.0.WOSEUXM_20251105.0000.00_16.0_eea_f28e0f3b72.tgz | EEA / Europe (EUXM) | Android 16 / HyperOS 3.0.5.0 | 05 Nov 2025 (public release window) | ≈ 8.40 GB | Fastboot | EEA bug‑fix release addressing signal instability and battery issues, plus HyperOS 3 AI and multitasking improvements. | Download OS3.0.5.0.WOSEUXM (Xiaomi Server) |
| klimt_tw_global_images_OS2.0.203.0.VOSTWXM_20251023.0000.00_15.0_tw_7f084630f7.tgz | Taiwan (TWXM) | Android 15 / HyperOS 2.0.203.0 | 23 Oct 2025 | ≈ 7.14 GB | Fastboot | TW regional build with usual system stability tweaks and updated security patch. | Download OS2.0.203.0.VOSTWXM (Xiaomi Server) |
| klimt_tr_global_images_OS2.0.205.0.VOSTRXM_20251028.0000.00_15.0_tr_16c8f5167c.tgz | Turkey (TRXM) | Android 15 / HyperOS 2.0.205.0 | 28 Oct 2025 | ≈ 7.60 GB | Fastboot | TR‑specific modem profile plus general stability and error fixes with October 2025 patch. | Download OS2.0.205.0.VOSTRXM (Xiaomi Server) |
| klimt_jp_global_images_OS2.0.203.0.VOSJPXM_20251023.0000.00_15.0_jp_4ff46f1259.tgz | Japan (JPXM) | Android 15 / HyperOS 2.0.203.0 | 23 Oct 2025 | ≈ 7.82 GB | Fastboot | Japanese variant with localized settings and the usual system stability and security improvements. | Download OS2.0.203.0.VOSJPXM (Xiaomi Server) |
Flashing Requirements
- Unlocked bootloader on the Xiaomi 15T Pro (klimt) is mandatory for installing these fastboot ROMs.
- A Windows PC or laptop, original USB‑C cable, and up‑to‑date Xiaomi USB drivers are required to ensure stable communication in fastboot mode.
- Install Xiaomi Mi Flash Tool and ensure ADB / fastboot tools are properly set up if you prefer manual flash_all.bat scripts.
- Back up all personal data, as flashing fastboot images can fully wipe internal storage depending on the script you choose.
- Charge the phone to at least 60% and verify that the downloaded ROM exactly matches your region code (MIXM, RUXM, IDXN, EUXM, TWXM, TRXM, JPXM) before you start.
How to Flash the Firmware
Below is a high‑level overview of how to flash these official klimt fastboot ROMs using Xiaomi’s tools; always follow a detailed step‑by‑step guide before attempting this on your own device.
Fastboot ROM via Xiaomi Mi Flash Tool
- Download the correct klimt fastboot package for your region from the table above and extract the.tgz file on your PC.
- Install Xiaomi USB drivers and Mi Flash Tool, then boot the Xiaomi 15T Pro into fastboot mode (power off, then hold Volume Down + Power).
- Connect the phone to the PC, open Mi Flash Tool, and select the extracted ROM folder that contains the images and flashing scripts.
- Choose the desired flashing option (clean all is recommended) and click Flash to start writing the firmware to all required partitions.
- Wait until Mi Flash reports success, then disconnect and boot the device; the first boot may take several minutes while HyperOS optimizes apps and services.
Fastboot ROM via flash_all.bat Script
- Extract the downloaded klimt.tgz, locate the flash_all.bat or similar script file inside the ROM folder.
- Install ADB / fastboot drivers, place the ROM folder in a simple path (for example, C:\klimt_fastboot), and open a command window there.
- Boot the Xiaomi 15T Pro into fastboot mode and connect it via USB to the computer.
- Run flash_all.bat as administrator to start the automated partition flashing process.
- When the script finishes and the phone reboots, complete initial setup and allow one to three days for the system to finish background optimizations and normalize battery use.
For full screenshot and video instructions tailored to these klimt fastboot ROMs, follow the official Xiaomi Mi Flash Tool tutorial and the dedicated fastboot script flashing guide so you can match each step to your exact firmware method. Use the Xiaomi Mi Flash Tool guide at this link and the flash_all.bat fastboot script guide at this link for more detailed, model‑agnostic procedures.
Frequently Asked Questions (FAQs)
What is this Xiaomi 15T Pro (klimt) fastboot firmware used for?
These official HyperOS fastboot ROMs are designed for clean installs, fixing bootloops, resolving persistent software bugs, and returning modded devices to stock firmware on the Xiaomi 15T Pro.
Which common issues can these updates help fix?
HyperOS 2.0.20x builds focus on general system stability, random error fixes, and updated security patches that address crashes, glitches and potential vulnerabilities.
The HyperOS 3.0.5.0 EEA update specifically targets signal instability and reported battery problems after the first Android 16 rollout, while also improving multitasking and overall system smoothness.
Will flashing these ROMs erase my data?
Using the clean‑all option in Mi Flash or the default flash_all.bat script usually wipes user data, so always back up internal storage and important accounts before flashing.
Can I mix regions, for example flash EEA on a Russian device?
Although many Xiaomi devices can technically boot cross‑region firmware, Xiaomi recommends staying on the correct code (MIXM, EUXM, RUXM, IDXN, TWXM, TRXM, JPXM) to avoid network, payment, or feature limitations.
Do these ROMs fix battery drain and overheating on the 15T Pro?
Users have reported that newer HyperOS 2.2 builds and especially HyperOS 3 improve battery consistency and thermal behavior compared to early HyperOS 2 releases, though results can vary by usage and region.
Can I downgrade from HyperOS 3 back to HyperOS 2?
In many cases, Android anti‑rollback protections and Xiaomi’s update policy prevent safe downgrades between major Android versions, so moving from OS3.0.5.0 (Android 16) back to OS2.x (Android 15) may not be supported and risks bricking your device.
Why does my battery seem worse right after flashing?
After each HyperOS update the system performs background optimization, indexing and app recompilation, which Xiaomi notes can cause temporarily higher battery consumption and warmth for one to three days.
