Redmi K70 Ultra and Xiaomi 14T Pro share the internal codename rothko and pair a 6.67‑inch 1.5K 144 Hz OLED display with the flagship MediaTek Dimensity 9300+ chipset, fast LPDDR5X RAM, UFS 4.0 storage and very fast wired charging for high‑end gaming and content creation.
Despite the powerful hardware, users report hot temperatures during long gaming, thermal throttling, occasional freezes, and battery drain or UI lag after certain HyperOS 2 updates on both Redmi K70 Ultra and Xiaomi 14T Pro.
The official China HyperOS 3 Android 16 ROM and global/region‑specific HyperOS 2 fastboot packages listed here let you clean‑flash rothko devices, applying updated security patches, stability fixes and performance optimizations that can help control heat, smooth animations and normalize battery drain.
Redmi K70 Ultra / Xiaomi 14T Pro Firmware Details
| Device names | Redmi K70 Ultra (China) / Xiaomi 14T Pro (Global, EEA, JP, ID, TR, TW, DC carrier) |
|---|---|
| Codename | rothko |
| Key model IDs | Redmi K70 Ultra China; Xiaomi 14T Pro 2407FPN8EG (Global), 2407FPN8ER (Japan) and related variants |
| Chipset | MediaTek Dimensity 9300+ with powerful multi‑core CPU and high‑end GPU |
| Display | 6.67″ OLED, 1220×2712, up to 144 Hz refresh, high brightness for gaming and HDR content |
| Battery / charging | Large battery with very fast wired charging (up to 120 W on K70 Ultra) |
| Typical issues | Overheating and hot frame in heavy games, thermal throttling, random freezes, and heavier standby/battery drain after some HyperOS 2 builds. |
| Main firmware here | China HyperOS 3.0.3.0.WNNCNXM (Android 16) fastboot; global and EEA Android 16 HyperOS 2 fastboot; several Android 15 HyperOS 2 fastboot ROMs for RU, ID, TW, TR, JP and DC/global carrier. |
| OS3.0.3.0 highlights | Deeper scheduler and memory tuning, smoother animations, fixes for incorrect UI items and updated security patch (around Sept 2025) for better stability. |
| File type | Official Xiaomi fastboot images (.tgz) including all main partitions and flash_all*.bat scripts |
| Flashing tools | Xiaomi Mi Flash Tool on Windows or manual fastboot commands, with unlocked bootloader required. |
Download Official Firmware for Redmi K70 Ultra / Xiaomi 14T Pro (rothko)
The firmware packages below are official HyperOS fastboot ROMs pulled from Xiaomi’s bigota servers for Redmi K70 Ultra (China) and Xiaomi 14T Pro (global regions). The China OS3.0.3.0.WNNCNXM build gives early Android 16 HyperOS 3 to K70 Ultra, while the global and EEA OS2.0.225.0/226.0 builds bring Android 16 with refined battery behavior and animations under HyperOS 2, and the Android 15 regional ROMs keep older devices stable until Android 16 rolls out to them.
| Filename | File size | Build date | Build / Android | Region / type | Download |
|---|---|---|---|---|---|
| rothko_images_OS3.0.3.0.WNNCNXM_20251107.0000.00_16.0_cn_1909e51601.tgz | 8.98 GB | 2025‑11‑07 | OS3.0.3.0.WNNCNXM · Android 16 · HyperOS 3 | China · Redmi K70 Ultra HyperOS 3 fastboot ROM | Download OS3.0.3.0 China (Xiaomi bigota) |
| rothko_global_images_OS2.0.225.0.WNNMIXM_20251105.0000.00_16.0_global_8fac6966f2.tgz | 8.26 GB | 2025‑11‑05 | OS2.0.225.0.WNNMIXM · Android 16 · HyperOS 2 | Global (MI) · Xiaomi 14T Pro HyperOS 2 fastboot ROM | Download OS2.0.225.0 Global (Xiaomi bigota) |
| rothko_ru_global_images_OS2.0.207.0.VNNRUXM_20251106.0000.00_15.0_ru_ab83732f52.tgz | 7.98 GB | 2025‑11‑06 | OS2.0.207.0.VNNRUXM · Android 15 | Russia (RU) · Xiaomi 14T Pro / Redmi K70 Ultra regional fastboot ROM | Download OS2.0.207.0 RU (Xiaomi bigota) |
| rothko_id_global_images_OS2.0.207.0.VNNIDXM_20251103.0000.00_15.0_id_ba03378a96.tgz | 7.35 GB | 2025‑11‑03 | OS2.0.207.0.VNNIDXM · Android 15 | Indonesia (ID) · Xiaomi 14T Pro regional fastboot ROM | Download OS2.0.207.0 ID (Xiaomi bigota) |
| rothko_eea_global_images_OS2.0.226.0.WNNEUXM_20251105.0000.00_16.0_eea_7b0dcde633.tgz | 7.71 GB | 2025‑11‑05 | OS2.0.226.0.WNNEUXM · Android 16 · HyperOS 2 | EEA (EU) · Xiaomi 14T Pro HyperOS 2 Android 16 fastboot ROM | Download OS2.0.226.0 EEA (Xiaomi bigota) |
| rothko_tw_global_images_OS2.0.207.0.VNNTWXM_20251106.0000.00_15.0_tw_21ae734049.tgz | 6.78 GB | 2025‑11‑06 | OS2.0.207.0.VNNTWXM · Android 15 | Taiwan (TW) · Xiaomi 14T Pro / Redmi K70 Ultra regional fastboot ROM | Download OS2.0.207.0 TW (Xiaomi bigota) |
| rothko_tr_global_images_OS2.0.205.0.VNNTRXM_20251106.0000.00_15.0_tr_338d455feb.tgz | 7.30 GB | 2025‑11‑06 | OS2.0.205.0.VNNTRXM · Android 15 | Turkey (TR) · Xiaomi 14T Pro regional fastboot ROM | Download OS2.0.205.0 TR (Xiaomi bigota) |
| rothko_jp_global_images_OS2.0.205.0.VNNJPXM_20251106.0000.00_15.0_jp_0d1ea191ac.tgz | 7.28 GB | 2025‑11‑06 | OS2.0.205.0.VNNJPXM · Android 15 | Japan (JP) · Xiaomi 14T Pro regional fastboot ROM | Download OS2.0.205.0 JP (Xiaomi bigota) |
| rothko_dc_global_images_OS2.0.3.0.VNNMIDC_20241226.0000.00_15.0_global_dc_6248adf0c4.tgz | 6.48 GB | 2024‑12‑26 | OS2.0.3.0.VNNMIDC · Android 15 | Global DC / carrier variant · early HyperOS 2 fastboot ROM | Download OS2.0.3.0 DC Global (Xiaomi bigota) |
Flashing Requirements
- Confirm your phone is codename rothko with fastboot getvar product before flashing any of these ROMs.
- Unlock the bootloader; Xiaomi requires an unlocked bootloader for all fastboot packages on Redmi K70 Ultra and Xiaomi 14T Pro.
- Use a Windows PC with Xiaomi USB drivers installed, Xiaomi Mi Flash Tool (or fastboot CLI), a high‑quality USB‑C cable and at least 20 GB free disk space.
- Charge the battery above 60 % to reduce the risk of shutdown and extra throttling while flashing these large 7–9 GB images.
- Back up internal storage (photos, chats, documents), as recommended “clean all” flashes will wipe user data completely.
How to Flash the Firmware
Fastboot ROMs (.tgz) with Xiaomi Mi Flash Tool
- Download the correct regional rothko_…_images_… `.tgz` file and extract it until the images folder and flash_all*.bat scripts are visible.
- Install Xiaomi USB drivers and Xiaomi Mi Flash Tool, then open Mi Flash and select the extracted firmware folder as your ROM path.
- Boot your Redmi K70 Ultra / Xiaomi 14T Pro into fastboot mode, connect via USB and click “Refresh” in Mi Flash to confirm the device is detected.
- Choose the clean all option for a fresh install, click “Flash” and wait until Mi Flash reports success without unplugging the cable or closing the tool.
- Reboot into HyperOS; expect a longer first boot as Android rebuilds caches and applies performance and battery optimizations from the new build.
For full step‑by‑step guides with screenshots and videos, see the official‑style tutorials on using Xiaomi Mi Flash Tool, using a flash_all.bat fastboot script and manually installing OTA updates via recovery/ADB sideload.
Frequently Asked Questions (FAQs)
What problems can these rothko ROMs fix?
Clean fastboot ROMs can revive devices stuck on the boot logo, repair failed HyperOS updates and remove deep system glitches that cause freezes, random reboots or severe lag.
Will HyperOS 3.0.3.0 or OS2.0.225.0 solve overheating?
These builds improve scheduling and efficiency, which can reduce unnecessary heat, but Redmi K70 Ultra and Xiaomi 14T Pro with Dimensity 9300+ still run hot in long, heavy gaming sessions, so limiting brightness, avoiding play while charging and closing background apps remains important.
Why does my battery drain faster after some HyperOS 2 updates?
Users report higher idle drain after certain HyperOS 2 builds due to background connectivity features and Wi‑Fi behavior, and disabling continuous scanning or switching Wi‑Fi modes has helped many restore normal endurance.
How do I choose the correct regional firmware?
China Redmi K70 Ultra should use WNNCNXM, while Xiaomi 14T Pro owners must match WNNMIXM (Global), WNNEUXM (EEA), VNNRUXM (RU), VNNIDXM (ID), VNNTWXM (TW), VNNTRXM (TR), VNNJPXM (JP) or VNNMIDC (DC/global carrier).
Does flashing these ROMs void my warranty?
Bootloader unlocking and manual fastboot flashing are often considered advanced operations, and Xiaomi notes that unlocking may affect after‑sales policy, so always check your local warranty terms before you proceed.
