- Aug 3, 2025
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These official Xiaomi fastboot firmware packages are for the earth device family (Xiaomi Redmi 12C, also used by POCO C55) and are mainly used for a full reinstall, fixing a failed update, or recovering a phone stuck in a boot loop (when Fastboot still works).
Real users have reported issues like the updater failing with “couldn’t update rom”, random reboots, and even recovery errors such as “NV data is corrupted”, which are common reasons people switch to a full fastboot flash instead of OTA updating.
For the full step-by-step guide (with extra troubleshooting), follow: How to flash Xiaomi fastboot ROMs using Xiaomi Mi Flash Tool.
Real users have reported issues like the updater failing with “couldn’t update rom”, random reboots, and even recovery errors such as “NV data is corrupted”, which are common reasons people switch to a full fastboot flash instead of OTA updating.
Redmi 12C (earth) Firmware Details
| Supported device(s) | Xiaomi Redmi 12C (codename: earth); also referenced as Redmi 12C / POCO C55 on ROM listings. |
| Phone variants / model numbers | Global (22126RN91Y, 22120RN86G), India (22120RN86H, 22120RN86I), China (22120RN86C), plus 2212ARNC4L (Latin America, Japan) as listed by firmware catalogs. |
| Codename | earth |
| Chipset (SoC) | MediaTek MT6768 Helio G85 (LineageOS device specs). |
| Android version | Android 14 (these builds are tagged 14.0 in filenames; Redmi 12C HyperOS 1 is listed as Android 14). |
| Firmware type | Fastboot ROM (.tgz) for PC flashing (full firmware package). |
| Firmware purpose | - Full reinstall / clean flash - Fix failed OTA updates - Bootloop recovery (if Fastboot mode still works) |
| Flashing tool | Xiaomi Mi Flash Tool (Fastboot flashing workflow). |
Common User-Reported Problems (Before Flashing)
These are real complaints seen from Redmi 12C firmware/update discussions and user comments:- Updater downloads the ROM but fails at the end with an error like “couldn’t update rom”.
- Device rebooting itself and becoming unstable after missing or delaying updates.
- Recovery screen message: “NV data is corrupted” (reported on a European HyperOS build).
- Users feeling that “each time I update… there is a new bug” and requesting downgrades to older MIUI builds.
Download Official Firmware for Redmi 12C / POCO C55 (earth)
How to pick the right file:- If your filename contains _cn_ it’s China firmware (UCVCNXM).
- If your filename contains _global_ it’s Global firmware (UCVMIXM).
- If your filename contains _eea_ it’s Europe/EEA firmware (UCVEUXM).
- If your filename contains _in_, _id_, _tr_, _tw_, _ru_, it’s India/Indonesia/Turkey/Taiwan/Russia respectively.
- Filename: earth_images_OS1.0.8.0.UCVCNXM_20250820.0000.00_14.0_cn_177386999a.tgz
- Size: 4.62GB
- Build Date: 2025-08-20 (from filename)
- Build Version: OS1.0.8.0.UCVCNXM
- Android Version: 14.0 (from filename)
- Region: China (CN)
- File Type: Fastboot ROM (.tgz)
- Recommended Flashing Tool: Xiaomi Mi Flash Tool
- Download Link: BigOTA (Xiaomi server)
Notes (China ROM): China firmware listings commonly note no Google services on CN builds, so plan accordingly if you rely on Google apps.
When this Global fastboot ROM is useful:
- Your updater fails with “couldn’t update rom”.
- Your Redmi 12C keeps rebooting or feels unstable after updates.
- Filename: earth_eea_global_images_OS1.0.13.0.UCVEUXM_20251027.0000.00_14.0_eea_ca2745a4ab.tgz
- Size: 5.73GB
- Build Date: 2025-10-27 (from filename)
- Build Version: OS1.0.13.0.UCVEUXM
- Android Version: 14.0 (from filename)
- Region: EEA (Europe)
- File Type: Fastboot ROM (.tgz)
- Changelog (verifiable for this version): Updated the security patch to October 2025; increased system security.
- Recommended Flashing Tool: Xiaomi Mi Flash Tool
- Download Link: BigOTA (Xiaomi server)
EEA troubleshooting note: A user reported a “NV data is corrupted” recovery error on an EEA HyperOS build, which is one scenario where people attempt a full reinstall (results can vary).
- Filename: earth_in_global_images_OS1.0.11.0.UCVINXM_20250624.0000.00_14.0_in_7415d0374a.tgz
- Size: 5.07GB
- Build Date: 2025-06-24 (from filename)
- Build Version: OS1.0.11.0.UCVINXM
- Android Version: 14.0 (from filename)
- Region: India (IN)
- File Type: Fastboot ROM (.tgz)
- Recommended Flashing Tool: Xiaomi Mi Flash Tool
- Download Link: HugeOTA (Xiaomi server)
- Filename: earth_id_global_images_OS1.0.9.0.UCVIDXM_20250624.0000.00_14.0_id_4588d3cc2f.tgz
- Size: 5.76GB
- Build Date: 2025-06-24 (from filename)
- Build Version: OS1.0.9.0.UCVIDXM
- Android Version: 14.0 (from filename)
- Region: Indonesia (ID)
- File Type: Fastboot ROM (.tgz)
- Recommended Flashing Tool: Xiaomi Mi Flash Tool
- Download Link: HugeOTA (Xiaomi server)
- Filename: earth_tr_global_images_OS1.0.9.0.UCVTRXM_20250624.0000.00_14.0_tr_c0717e7204.tgz
- Size: 5.48GB
- Build Date: 2025-06-24 (from filename)
- Build Version: OS1.0.9.0.UCVTRXM
- Android Version: 14.0 (from filename)
- Region: Turkey (TR)
- File Type: Fastboot ROM (.tgz)
- Recommended Flashing Tool: Xiaomi Mi Flash Tool
- Download Link: HugeOTA (Xiaomi server)
- Filename: earth_tw_global_images_OS1.0.9.0.UCVTWXM_20250624.0000.00_14.0_tw_051ff6f1fe.tgz
- Size: 5.19GB
- Build Date: 2025-06-24 (from filename)
- Build Version: OS1.0.9.0.UCVTWXM
- Android Version: 14.0 (from filename)
- Region: Taiwan (TW)
- File Type: Fastboot ROM (.tgz)
- Recommended Flashing Tool: Xiaomi Mi Flash Tool
- Download Link: BigOTA (Xiaomi server)
- Filename: earth_ru_global_images_OS1.0.10.0.UCVRUXM_20250902.0000.00_14.0_ru_59b8b117d0.tgz
- Size: 6.07GB
- Build Date: 2025-09-02 (from filename)
- Build Version: OS1.0.10.0.UCVRUXM
- Android Version: 14.0 (from filename)
- Region: Russia (RU)
- File Type: Fastboot ROM (.tgz)
- Recommended Flashing Tool: Xiaomi Mi Flash Tool
- Download Link: BigOTA (Xiaomi server)
The Requirements
- A Windows PC (recommended for Mi Flash).
- USB data cable + stable USB port.
- Xiaomi USB drivers + Fastboot installed.
- Xiaomi Mi Flash Tool.
- Backup (a clean flash can wipe data).
- Correct region firmware for your Redmi 12C / POCO C55 variant.
How to Flash the Firmware (Quick Steps)
Method: Xiaomi Mi Flash Tool (Fastboot.TGZ)
- Download the correct earth fastboot ROM for your region (example: earth_global_images_OS1.0.14.0.UCVMIXM…tgz for Global).
- Extract the.tgz until you can see the firmware folder (it usually contains flash scripts like flash_all).
- Boot your Redmi 12C / POCO C55 into Fastboot mode (Power + Volume Down) until you see FASTBOOT.
- Open Xiaomi Mi Flash Tool, click Select, choose the extracted ROM folder, then Refresh to detect your device.
- Flash and wait for completion; then reboot and allow extra time for first boot.
For the full step-by-step guide (with extra troubleshooting), follow: How to flash Xiaomi fastboot ROMs using Xiaomi Mi Flash Tool.
Frequently Asked Questions (FAQs)
LineageOS lists earth as the Xiaomi Redmi 12C codename.
Some ROM catalogs also reference earth for Redmi 12C / POCO C55 firmware listings, so always verify your exact model/region before flashing.
Some ROM catalogs also reference earth for Redmi 12C / POCO C55 firmware listings, so always verify your exact model/region before flashing.
These region tags correspond to different official branches (China/Global/EEA/India/etc.), and Redmi 12C has multiple regional model variants.
Pick the file that matches your phone’s region and model number to avoid boot issues or missing features.
Pick the file that matches your phone’s region and model number to avoid boot issues or missing features.
A user report describes the updater downloading a ROM but failing at the end with an update error, which is a common reason to use a full fastboot ROM instead of OTA.
A clean fastboot flash is often used to replace corrupted system partitions when normal updates fail (data loss is possible).
A clean fastboot flash is often used to replace corrupted system partitions when normal updates fail (data loss is possible).
LineageOS documents the bootloader/Fastboot key combo for earth: hold Volume Down + Power until FASTBOOT appears.
Some firmware catalogs note that China ROMs commonly ship with only English/Chinese and without Google services, while Global ROMs include Google services.
If you depend on Google apps, avoid flashing CN firmware unless you fully understand the limitations for your use case.
If you depend on Google apps, avoid flashing CN firmware unless you fully understand the limitations for your use case.
A user reported seeing “Xiaomi HyperOS Recovery: NV data is corrupted” on a European HyperOS build.
In cases like this, users often attempt a full reinstall using the correct fastboot ROM, but results depend on the underlying damage/corruption.
In cases like this, users often attempt a full reinstall using the correct fastboot ROM, but results depend on the underlying damage/corruption.
LineageOS lists earth (Redmi 12C) with the MediaTek Helio G85 (MT6768).
Correct firmware matching matters because partitions, device trees, and vendor components are device-specific.
Correct firmware matching matters because partitions, device trees, and vendor components are device-specific.
