Redmi Note 12 5G / Note 12R Pro (sunstone) HyperOS 2 Android 14 ROMs + xiaomi.eu & Recoveries

Redmi Note 12 5G and Redmi Note 12R Pro (codename sunstone) sit in the affordable 5G mid‑range, where users commonly complain about frame drops, delayed app launches, and battery drain after major updates if OTAs are layered without a clean install. Official HyperOS 2 Android 14 fastboot ROMs, together with the xiaomi.eu custom build and matching TWRP/OrangeFox recoveries, provide full‑image flashes that refresh performance, apply late‑2025 security patches, and resolve many stability issues seen on partially updated Redmi Note 12 5G systems.

Download Firmware for Redmi Note 12 5G / Note 12R Pro (sunstone)

The following ROMs are official HyperOS 2 Android 14 fastboot packages for Redmi Note 12 5G / Redmi Note 12R Pro (codename sunstone), plus a xiaomi.eu multi‑language custom ROM and two custom recoveries. Newer builds deliver more refined security and stability, while older ones are useful mainly for troubleshooting or region‑specific scenarios.

Clarity notes: Codename and region must match precisely. Device and codename lists associate sunstone with Redmi Note 12 5G / Note 12R Pro, with model numbers like 22101317C/22111317G/22111317I, and separate firmware lines exist for other Note 12 variants such as tapas (Note 12 4G) or sky (Note 12R). For most users, the safest choice is the newest official HyperOS 2 fastboot ROM matching the original region: OS2.0.5.0.UMQMIXM (Global), OS2.0.6.0.UMQEUXM (EEA), OS2.0.6.0.UMQINXM (India), OS2.0.6.0.UMQTWXM (Taiwan), or OS2.0.6.0.UMQCNXM (China).

Complete Device & Firmware Overview

Device Names:

Redmi Note 12 5G and Redmi Note 12R Pro.

Codename:

sunstone – assigned to Redmi Note 12 5G / Note 12R Pro, distinct from other Note 12 series codenames in codename references.

Model Numbers:

Examples include 22101317C (China), 22111317G (Global/EEA), and 22111317I (India / Note 12R Pro).

Platform & Hardware:

Qualcomm Snapdragon 4 Gen 1 / Snapdragon 695‑class 5G mid‑range platform (depending on variant), with 6.67″ 120 Hz AMOLED panel, up to 8 GB RAM and large battery, requiring careful firmware tuning to maintain smoothness and endurance.

HyperOS Firmware Branch:

HyperOS 2.0 on Android 14.0, OS2.0.x.0.UMQ**XM line. Archive and update trackers show OS2.0.6.0.UMQCNXM/UMQEUXM/UMQINXM and OS2.0.5.0.UMQMIXM as stable Android 14 releases.

Security & Stability Focus:

Firmware descriptions indicate that late OS2.0 builds for sunstone update security patches (for example, to November 2025 on some branches) and highlight “increased system security” and system stability improvements, targeting lag and bugs reported after earlier updates.

Common User Pain Points:

Redmi Note 12‑class devices and other mid‑range Xiaomi phones frequently see complaints about stuttery animations, overheating during games, and battery drain after HyperOS or MIUI updates, often resolved by cleanly reinstalling latest firmware rather than stacking OTAs.

ROM Types:

Official HyperOS fastboot ROMs (sunstone*_images_*.tgz) for Xiaomi Flash Tool; separate recovery/OTA ZIPs for in‑system updates; xiaomi.eu HyperOS 2 ZIP built from China base for custom recovery installations.

Bootloader & Anti‑rollback:

Same‑region official fastboot ROMs target stock devices; cross‑region flashing and custom ROMs (xiaomi.eu) require unlocked bootloaders. Anti‑rollback (ARB) prevents unsafe downgrades, so caution is needed when attempting to flash older releases.

File Size & Format:

Fastboot ROMs are TGZ archives around 5.1–5.9 GB; they expand to larger directories with multiple partition images. The xiaomi.eu ZIP is about 4.3–4.6 GB, suitable for recovery flash.

Required Tools:

Windows PC, Xiaomi USB/fastboot drivers, Xiaomi Flash Tool for official ROMs, optional ADB/fastboot, plus TWRP or OrangeFox for xiaomi.eu installation and advanced tasks.

Preparation Before Flashing

How to flash Firmware Files to Redmi Note 12 5G / Note 12R Pro

This simplified guide covers flashing an official HyperOS 2 fastboot ROM, such as sunstone_global_images_OS2.0.5.0.UMQMIXM_20251020.0000.00_14.0_global_f4ad534bf4.tgz for global devices or sunstone_eea_global_images_OS2.0.6.0.UMQEUXM_... for EEA, using Xiaomi’s fastboot flashing tool on a Windows PC.

1. Prepare PC and ROM: Install Xiaomi USB drivers and Xiaomi Flash Tool. Download the correct fastboot ROM (for example, OS2.0.5.0.UMQMIXM for global or OS2.0.6.0.UMQEUXM for EEA) and fully extract the sunstone_...tgz file to a short directory such as C:\sunstone_rom.
2. Enter fastboot mode: Power off the phone, then hold Volume Down + Power until the fastboot logo appears. Connect via USB‑C, and optionally run fastboot getvar product to confirm sunstone.
3. Configure Xiaomi Flash Tool: Open Xiaomi Flash Tool, select the extracted ROM folder as the firmware path, and choose the “clean all” option so HyperOS 2 installs fresh while leaving the bootloader state unchanged; avoid “clean all and lock” unless using the exact stock region ROM with no prior modifications.
4. Execute the flash: Click “refresh” to confirm device detection, then press “flash”. Wait for the tool to complete writing all partitions without disconnecting the cable or powering off the PC; this may take several minutes depending on hardware.
5. First boot and optimization: After success, the device reboots into HyperOS 2. The first boot can be slow while apps and services are optimized; once finished, evaluate animations, app speed, and battery behavior to confirm improvements over previous builds.

For a full, screenshot‑based tutorial that explains driver setup, anti‑rollback, and troubleshooting Xiaomi Flash Tool errors step by step, refer to the dedicated Xiaomi Fastboot Firmware Guide, which can be followed directly when flashing these sunstone ROMs.

Frequently Asked Questions (FAQs)

Q1. Which HyperOS 2 fastboot ROM is recommended for most Redmi Note 12 5G owners?

The safest option is the newest stable HyperOS 2 fastboot ROM matching the device’s original region: OS2.0.5.0.UMQMIXM for Global, OS2.0.6.0.UMQEUXM for EEA, OS2.0.6.0.UMQINXM for India, OS2.0.6.0.UMQTWXM for Taiwan, or OS2.0.6.0.UMQCNXM for China, as listed on HyperOS firmware trackers.

Q2. Does HyperOS 2 improve performance over MIUI 14 on sunstone?

Android 14‑based HyperOS 2 builds for sunstone integrate updated kernels, revised animations, and system stability fixes. Combined with a clean flash, these changes can reduce stutters and random slowdowns that appeared on older MIUI 14 builds, particularly once storage became fragmented or apps accumulated.

Q3. Who should use xiaomi.eu_SUNSTONE_OS2.0.6.0.UMQCNXM_14.zip instead of stock ROMs?

The xiaomi.eu ROM targets advanced users who want multi‑language support, integrated Google services, and reduced Chinese bloat based on the latest China firmware, and who are comfortable with unlocking the bootloader and flashing via TWRP or OrangeFox instead of relying on official OTA updates.

Q4. Is it safe to flash Global OS2.0.5.0.UMQMIXM on an EEA or Indian Redmi Note 12 5G?

Codename compatibility is present, but cross‑flashing between MIXM, EUXM, and INXM can affect VoLTE configuration, regulatory flags, and OTA behavior; firmware and codename resources advise staying with the matching regional build for long‑term stability unless there is a specific reason to cross‑flash.

Q5. Do these fastboot ROMs upgrade older Android 13 builds directly to Android 14?

Yes. HyperOS 2 OS2.0.x.0.UMQ**XM fastboot ROMs are Android 14 and are designed to replace earlier MIUI 14 or HyperOS 1 builds in one full flash, bringing both the new OS level and updated security patches.

Q6. What symptoms indicate that a clean fastboot reinstall is preferable to another OTA?

Persistent lag, repeated app crashes, unstable 5G connectivity, or ongoing battery drain after several updates—especially when resets do not help—are strong indicators that the system files may be inconsistent, and that a clean fastboot flash of the correct HyperOS 2 fastboot ROM is advisable.