Redmi A4 5G and its twin POCO C75 5G (codename warm) are budget 5G phones with a large 6.88‑inch 120 Hz IPS display, Snapdragon 4s Gen 2 chipset, 4–6 GB RAM, 64–128 GB storage and a 5160 mAh battery built for everyday social, streaming and light gaming at low cost.
Real‑world feedback on HyperOS 2 across similar Snapdragon 4‑series Xiaomi and POCO devices often mentions higher standby drain, extra heat after updates and random lag or stutter, especially when many background apps are running.
The India firmware files OS2.0.203.0.VGVINXM below – one full fastboot ROM and one complete OTA ZIP – give you a clean, official way to refresh or update your warm device to Android 15 HyperOS 2.0.203.0, improving stability, security and performance when flashed correctly.
Redmi A4 5G / POCO C75 5G (warm) Firmware Details
| Device Name | Redmi A4 5G / POCO C75 5G |
|---|---|
| Codename | warm (India and global references) |
| Model Identifier | 24116RNC1I and related India variants mapped to warm |
| Chipset / CPU | Qualcomm Snapdragon 4s Gen 2, octa‑core up to 2.3 GHz with Adreno GPU |
| Memory / Storage | 4 GB / 6 GB RAM, 64 GB / 128 GB storage, microSDXC expansion |
| Display | 6.88″ IPS LCD, 120 Hz, HD+ resolution, centered punch‑hole |
| Battery / Charging | 5160 mAh battery with 18 W wired charging |
| Main Cameras | 50 MP rear camera + 5 MP selfie, up to 1080p video |
| Launch Software | Android 14 with HyperOS 2 (India), upgradable to Android 15 |
| Target Firmware | OS2.0.203.0.VGVINXM · HyperOS 2.0 (Android 15), India stable |
| Build Date | 2025‑10‑21 build, rolled out late October–November 2025 |
| Security / Changes | Updated Android security patch and system stability improvements for warm line |
| File Types Here | Fastboot images (.tgz) and full OTA / recovery ZIP (.zip) |
| Required Tool | Mi Flash Tool or fastboot for TGZ; built‑in updater / recovery / ADB sideload for OTA ZIP |
| Bootloader Status | Unlocked bootloader required for fastboot TGZ; OTA ZIP works on locked stock devices |
Download Official Firmware for Redmi A4 5G / POCO C75 5G (warm)
The OS2.0.203.0.VGVINXM India release is available as both a fastboot images package for deep repair and a full OTA ZIP for standard upgrades. This build aims to harden security and improve HyperOS 2 stability on warm devices while keeping the familiar interface and features.
| Filename | File Size | Build Date | Build Version | Android / Region | Flashing Type | Download |
|---|---|---|---|---|---|---|
| warm_in_global_images_OS2.0.203.0.VGVINXM_20251021.0000.00_15.0_in_13654be440.tgz | 5.52 GB | 2025‑10‑21 | OS2.0.203.0.VGVINXM (India stable) | Android 15 · India (IN) fastboot images | Fastboot ROM (full partition images) | Download OS2.0.203.0 (Xiaomi bigota) |
| warm_in_global-ota_full-OS2.0.203.0.VGVINXM-user-15.0-75f5c1cd84.zip | 3.86 GB | 2025‑10‑21 | OS2.0.203.0.VGVINXM (India stable) | Android 15 · India (IN) full OTA / recovery | OTA ZIP (system updater / recovery) | Download OS2.0.203.0 OTA (Xiaomi bigota) |
Choose the fastboot TGZ if you need a full clean reinstall or unbrick, and the OTA ZIP if your phone still boots and you just want a safe in‑place update to Android 15.
Flashing Requirements
- Redmi A4 5G / POCO C75 5G with codename warm; verify via fastboot (fastboot getvar product) or a codename checker before flashing.
- For the TGZ fastboot ROM: unlocked bootloader, Windows PC, Xiaomi USB drivers, Mi Flash Tool and at least 10–12 GB of free disk space.
- For the OTA ZIP: stock recovery or system updater on a non‑rooted warm device, with current firmware close to OS2.x India builds.
- Original or good‑quality USB‑C cable and a stable USB port; avoid loose cables that can disconnect during fastboot flashing.
- Battery charged to at least 50–60 % and full backups of photos, chats and app data; fastboot flashing and failed OTAs can result in data loss.
How to Flash the Firmware
Quick steps – Fastboot TGZ (warm_in_global_images_…tgz)
- Unlock the bootloader (if not already unlocked), then download and extract the TGZ until you see the images folder and flash_all*.bat scripts.
- Install Xiaomi drivers and Mi Flash Tool on your PC, then launch Mi Flash and select the extracted firmware folder.
- Boot the phone into fastboot mode, connect it via USB and click “Refresh” in Mi Flash to confirm detection.
- Select “clean all” (recommended for repair and Android 15 upgrade), click “Flash” and wait until Mi Flash reports success without errors.
- Reboot and complete initial setup; expect the first boot to take several minutes while HyperOS 2 optimizes apps and services.
Quick steps – OTA ZIP (warm_in_global-ota_full_…zip)
- Download the OTA ZIP to your phone’s internal storage and ensure you have enough free space for extraction and installation.
- Open the system updater (Settings → About phone → HyperOS version) and use the menu option to “Choose update package” if available.
- Select the OTA ZIP file, confirm the update and let the phone verify and reboot into recovery automatically.
- Wait while the update installs; do not force‑reboot or power off until the device returns to the system on its own.
- After booting into Android 15, check battery and performance; if you notice serious lag or drain, consider a manual factory reset to clear leftovers.
For full picture‑based flash instructions, follow the dedicated Xiaomi Mi Flash Tool guide here: How to flash using Xiaomi MI Flash Tool, and for script or ADB/OTA installs see How to flash using a fastboot flash_all.bat script and How to manually install official OTA updates.
Frequently Asked Questions (FAQs)
What is OS2.0.203.0.VGVINXM for warm?
It is the official India‑region HyperOS 2.0 Android 15 firmware for Redmi A4 5G / POCO C75 5G (codename warm), delivered as both fastboot and full OTA packages.
Can I use this firmware on non‑India or non‑warm devices?
No. These files are only for India warm variants; using them on other regions or different codenames can break network bands, cause bootloops or hard‑brick the device. Always confirm codename warm and India product code before flashing.
Will flashing OS2.0.203.0 fix battery drain and lag?
This build updates security and stability and may reduce some drain or stutter, but HyperOS 2 reports on similar devices show that background apps and high CPU clocks can still cause issues, so a clean install and careful tuning are often needed.
Does the fastboot ROM wipe my data?
Yes. Using Mi Flash with “clean all” or running the default flash_all.bat script erases user data and internal storage, so backing up everything important is essential before flashing.
What if the OTA update fails or gets stuck?
If the OTA ZIP fails, first check storage space, file integrity and battery. If the phone still boots, you can retry OTA or use ADB sideload; if it is stuck in a bootloop, switch to the fastboot TGZ with Mi Flash for a full repair.
