Q1. Who should flash OS3.0.4.0.WONCNXM on Redmi K80 Ultra?

This ROM is best for Chinese K80 Ultra owners who want a clean upgrade to Android 16, or who are experiencing HyperOS 2.x/early 3.x problems like random app crashes, minor UI stutter, or inconsistent battery behavior and want to start fresh on the latest stable base.

Q2. Will this update fix K80 Ultra overheating and gaming throttling?

HyperOS 3 firmware and Xiaomi’s bug‑fix cadence aim to improve power management and stability, which can help keep temperatures and throttling behavior more consistent under sustained load. However, community tests still show that heavy 120 fps gaming can push the device into the mid‑40 °C range and trigger frame‑rate caps, so demanding players may still want external cooling or more conservative graphics settings.

Q3. Is it safe to update from HyperOS 2 directly to this HyperOS 3 fastboot ROM?

Yes, fastboot flashing OS3.0.4.0 over HyperOS 2 is a supported path as long as the device is truly a China dali unit and the bootloader is unlocked, and many users prefer full fastboot installs to avoid leftover OTA issues. That said, some early Redmi K80 users on initial HyperOS 3 builds reported app crashes and weaker battery life, so moving straight to this newer 3.0.4.0 release (rather than an older 3.0.0.x) is the safer choice.

Q4. How does Android 16 on K80 Ultra affect older 32‑bit apps and games?

Android 16 significantly tightens 32‑bit app support, and users on other HyperOS 3 phones have already noticed that some legacy 32‑bit games and ports no longer run or start very slowly after updating. If you rely on older titles, back them up and look for 64‑bit alternatives before committing to this firmware.

Q5. What is the difference between the OS3.0.4.0 fastboot TGZ and the recovery/OTA ZIP?

The dali_images_OS3.0.4.0.WONCNXM… TGZ is a full fastboot ROM for Mi Flash and is ideal for unbricking, downgrading between branches, or performing a completely clean install, while the dali-ota_full-OS3.0.4.0.WONCNXM… ZIP is a recovery/OTA package meant for in‑place updates from an existing compatible build. Fastboot is more flexible and reliable for deep repair, but also more destructive to user data if misused.

Q6. Will flashing this ROM relock my bootloader or break future OTA updates?

Using the recommended “clean all” option keeps the bootloader unlocked and lets you continue applying future fastboot or recovery updates manually, though cross‑region or modified setups may no longer receive OTA pushes normally. Choosing “clean all and lock” is only safe when returning to the exact original China CNXM branch; doing so on a tweaked or mismatched configuration can cause boot or account‑lock issues.

Redmi K80 Ultra (dali) Android 16 HyperOS 3 China fastboot ROM

The Redmi K80 Ultra (codename dali) is Redmi’s 2025 “Ultra” performance flagship for China, combining a 6.83‑inch 144 Hz OLED, Dimensity 9400+ chipset and a huge 7410 mAh battery aimed at power users and gamers. Real‑world feedback is excellent on raw speed, but owners also report concerns about heat under long 120 fps gaming sessions, frame‑rate drops, and battery life that sometimes falls short of expectations for such a large cell, alongside generic HyperOS bugs and occasional app crashes after early Android 16 updates.

The dali_images_OS3.0.4.0.WONCNXM fastboot ROM is Xiaomi’s latest China HyperOS 3 (Android 16) build for Redmi K80 Ultra, designed to deliver a fresh, fully updated system image with accumulated bug fixes, performance tuning and the newest security patches.

Complete Device & Firmware Overview

Device Name & Codename: Redmi K80 Ultra, 2025 China flagship with internal codename dali.
Market Position: High‑end “Extreme/Ultra” Redmi model focused on value flagship performance in the Chinese market, sitting above the regular K80 with upgraded cooling, display and charging.
Chipset & Performance: MediaTek Dimensity 9400+ (3 nm) with octa‑core CPU (1× Cortex‑X925 @ 3.63 GHz, 3× Cortex‑X4 @ 3.3 GHz, 4× Cortex‑A720 @ 2.4 GHz) and Immortalis‑G925 GPU, delivering top‑tier benchmarks and strong sustained gaming when cooling is adequate.
Display: 6.83‑inch 144 Hz AMOLED with 1.5K+ resolution and Xiaomi Shield Glass, tuned for smooth scrolling and high‑FPS gaming.
Battery & Charging: ≈7,410 mAh battery (often rounded to 7410/7400 mAh) with 100–120 W wired charging and “bypass charging plus” features to reduce heat while plugged in. Reviews show excellent endurance in normal use, but some users say the real‑world battery life doesn’t always match the huge capacity in heavy gaming and 144 Hz mode.
Memory & Storage: Configurations from 12/256 GB up to 16 GB RAM and 1 TB storage, targeting enthusiasts who keep many games and apps installed.
Ruggedness & Build: Premium glass/metal construction with IP68 dust/water resistance and advanced cooling hardware, highlighted in reviews and teardown coverage.
Launch Software: Ships with HyperOS 2 based on Android 15 (OS2.0.x VONCNXM series), later updated to HyperOS 3 / Android 16 via OS3.0.x WONCNXM builds.
Current Firmware Branch: OS3.0.4.0.WONCNXM – latest China stable HyperOS 3 fastboot ROM for Redmi K80 Ultra at the time of writing, based on Android 16.0.
Package Name & Type: dali_images_OS3.0.4.0.WONCNXM_20251105.0000.00_16.0_cn_c7ec9f6975.tgz, an official fastboot ROM containing full partition images for use with Xiaomi’s flashing tools.
File Size: Fastboot archive size listed around 9.7–9.8 GB.
Build Date & Release Window: Internal build date 2025‑11‑05 with public listing and mirrored uploads appearing from late November 2025.
Original User Pain Points: Community reports mention K80/K80 Ultra devices getting very warm (40–50 °C) in long 120 fps sessions, occasional throttling or frame‑rate locking, plus mixed experiences with battery endurance and HyperOS bugs like random app crashes or micro‑stutters after early HyperOS 3 installs.
How OS3.0.4.0 Helps: OS3.0.4.0.WONCNXM rolls up Android 16, newer security patches and Xiaomi’s recent HyperOS bug‑fix work, targeting smoother system performance, better stability, and fixes for issues identified in weekly bug reports on other HyperOS 3 phones.
Firmware Channel: China ROM (CNXM) – Chinese and English UI, Chinese ecosystem services, no Google apps or Play Store out of the box.
Flashing Method: Officially intended for Mi Flash / Xiaomi Flash Tool on Windows with an unlocked bootloader and the phone in fastboot mode.

CRUCIAL WARNING: This ROM is strictly for Redmi K80 Ultra with codename dali and China firmware (CNXM); flashing it to other Redmi K80 variants, Xiaomi 15‑series, POCO, or any different codename can permanently brick the device.

Because WONCNXM is a China build, you should only use it on Chinese K80 Ultra units; forcing it onto future global/EEA rebrands can break network, VoLTE, language, and OTA behavior or remove Google services entirely.

All official dali_images_*.tgz fastboot packages will overwrite key partitions and typically wipe user data, and selecting “clean all and lock” on a non‑stock or mismatched setup can relock the bootloader on an unsupported ROM, causing boot loops or account‑binding issues.

Download Firmware for Redmi K80 Ultra (dali)

For Chinese Redmi K80 Ultra owners, OS3.0.4.0.WONCNXM is currently the top‑tier fastboot choice: it gives a clean Android 16 HyperOS 3 base with the latest fixes, while older OS3.0.0.x and OS2.0.21x Android 15 builds remain useful only if you intentionally need to downgrade or reproduce a specific behavior.

Filename	Region / Variant	Build Number	Build Date	Android Version	Flashing Method	File Size	Notes	Download
dali_images_OS3.0.4.0.WONCNXM_20251105.0000.00_16.0_cn_c7ec9f6975.tgz	Redmi K80 Ultra China (dali) – CNXM	OS3.0.4.0.WONCNXM – HyperOS 3 Stable CN	5 November 2025 (fastboot build), listed late November 2025	Android 16.0	Xiaomi fastboot tool (Mi Flash / Xiaomi Flash)	≈9.76 GB (fastboot TGZ)	Official China fastboot ROM for a full clean‑flash to Android 16/HyperOS 3; ideal for solving stubborn HyperOS 2.x bugs, restoring stock system after mods, or starting fresh on the latest performance and security baseline.	Download from Xiaomi (China)

Quick clarity: If your About phone string ends in OS2.0.xxx.VONCNXM or OS3.0.x.WONCNXM and fastboot getvar product shows dali, this is the correct China fastboot ROM; owners of future Global/EEA rebrands should wait for matching MIXM/EUXM builds instead of forcing this CN firmware.

Preparation Before Flashing

Click here for the Redmi K80 Ultra (dali) pre‑flash checklist

Confirm exact model and codename: In fastboot mode, run fastboot getvar product from your PC to ensure it returns dali, and in Settings > About phone confirm you are on a China CNXM build (not a custom ROM or future global port) before using this package.
Backup all important data: Fastboot flashes usually wipe apps and user data; back up photos, chats, authenticator codes and documents to Mi Cloud, external storage or a PC before starting.
Unlock the bootloader: Xiaomi fastboot ROMs require an unlocked bootloader, so complete the official Mi Unlock process first, understanding that unlocking itself triggers a full data wipe.
Install drivers and tools: On your Windows PC, install Xiaomi USB drivers plus Mi Flash / Xiaomi Flash Tool, then extract dali_images_OS3.0.4.0.WONCNXM… to a short path such as C:\dali_OS3.0.4.0.
Charge and use a quality cable: Charge the phone to at least 50% and connect it with a good USB‑C cable directly to a rear motherboard USB port, avoiding hubs or loose connectors that could interrupt the flash.

Quick Firmware Flash Instructions

This simplified guide covers flashing dali_images_OS3.0.4.0.WONCNXM_20251105.0000.00_16.0_cn_c7ec9f6975.tgz to a Redmi K80 Ultra (dali) using Xiaomi’s fastboot flashing tool on Windows.

Prepare PC and ROM: Install Xiaomi USB drivers and Mi Flash / Xiaomi Flash Tool, then fully extract the .tgz ROM into a simple folder (for example C:\dali_OS3.0.4.0).
Enter fastboot mode: Power off the K80 Ultra, then hold Volume Down + Power until the fastboot logo appears, and connect the device to your PC via USB‑C.
Load the fastboot ROM: Open Mi Flash, click Select and point it to the extracted dali_images_OS3.0.4.0… folder, then confirm your device is listed and set the bottom option to clean all (not “clean all and lock” unless returning to stock CN).
Start flashing: Click Refresh and then Flash; wait patiently until Mi Flash reports success, avoiding any disconnection or PC sleep during the process.
Reboot and set up HyperOS 3: Once flashing completes, the phone will reboot into Android 16 / HyperOS 3; the first boot can take several minutes while the system optimizes apps, after which you can go through setup and restore your backup.

For an illustrated, step‑by‑step walkthrough of Xiaomi fastboot flashing (including driver fixes and error codes), follow the main Xiaomi fastboot firmware guide and simply select this dali ROM when the guide asks you to choose a fastboot package.

Frequently Asked Questions (FAQs)

Q1. Who should flash OS3.0.4.0.WONCNXM on Redmi K80 Ultra?: This ROM is best for Chinese K80 Ultra owners who want a clean upgrade to Android 16, or who are experiencing HyperOS 2.x/early 3.x problems like random app crashes, minor UI stutter, or inconsistent battery behavior and want to start fresh on the latest stable base.
Q2. Will this update fix K80 Ultra overheating and gaming throttling?: HyperOS 3 firmware and Xiaomi’s bug‑fix cadence aim to improve power management and stability, which can help keep temperatures and throttling behavior more consistent under sustained load. However, community tests still show that heavy 120 fps gaming can push the device into the mid‑40 °C range and trigger frame‑rate caps, so demanding players may still want external cooling or more conservative graphics settings.
Q3. Is it safe to update from HyperOS 2 directly to this HyperOS 3 fastboot ROM?: Yes, fastboot flashing OS3.0.4.0 over HyperOS 2 is a supported path as long as the device is truly a China dali unit and the bootloader is unlocked, and many users prefer full fastboot installs to avoid leftover OTA issues. That said, some early Redmi K80 users on initial HyperOS 3 builds reported app crashes and weaker battery life, so moving straight to this newer 3.0.4.0 release (rather than an older 3.0.0.x) is the safer choice.
Q4. How does Android 16 on K80 Ultra affect older 32‑bit apps and games?: Android 16 significantly tightens 32‑bit app support, and users on other HyperOS 3 phones have already noticed that some legacy 32‑bit games and ports no longer run or start very slowly after updating. If you rely on older titles, back them up and look for 64‑bit alternatives before committing to this firmware.
Q5. What is the difference between the OS3.0.4.0 fastboot TGZ and the recovery/OTA ZIP?: The dali_images_OS3.0.4.0.WONCNXM… TGZ is a full fastboot ROM for Mi Flash and is ideal for unbricking, downgrading between branches, or performing a completely clean install, while the dali-ota_full-OS3.0.4.0.WONCNXM… ZIP is a recovery/OTA package meant for in‑place updates from an existing compatible build. Fastboot is more flexible and reliable for deep repair, but also more destructive to user data if misused.
Q6. Will flashing this ROM relock my bootloader or break future OTA updates?: Using the recommended “clean all” option keeps the bootloader unlocked and lets you continue applying future fastboot or recovery updates manually, though cross‑region or modified setups may no longer receive OTA pushes normally. Choosing “clean all and lock” is only safe when returning to the exact original China CNXM branch; doing so on a tweaked or mismatched configuration can cause boot or account‑lock issues.