Redmi A5 and POCO C71 (codename serenity) are ultra‑budget 4G phones with a 6.88‑inch 120 Hz HD+ IPS display, Unisoc T7250 chipset, up to 6 GB RAM, 128 GB storage and a 5200 mAh battery aimed at basic gaming, social apps and all‑day use. Real‑world usage shows that while these phones handle light tasks well, users often face slow charging on the 15 W adapter, frame drops in heavier games, and the occasional lag or software glitch after updates or hard resets.
The Android 15 fastboot ROMs listed below for serenity (Global, India, Russia, EEA and Indonesia) let you clean‑flash the full system, recover from bootloops or firmware corruption, and move to newer builds with updated security patches and stability tweaks.
Redmi A5 / POCO C71 (serenity) Firmware Details
| Device Name | Redmi A5 4G / POCO C71 4G |
|---|---|
| Codename | serenity (shared by Redmi A5 and POCO C71 across regions) |
| Chipset / CPU | Unisoc T7250 (12 nm), octa‑core (2× Cortex‑A75 @ 1.8 GHz + 6× Cortex‑A55 @ 1.6 GHz), Mali‑G57 MP1 GPU |
| Display | 6.88″ IPS LCD, 720×1640, 120 Hz, ~260 ppi, 450–600 nits (typ/HBM) |
| Memory / Storage | 3–6 GB RAM, 64 GB or 128 GB eMMC 5.1, dedicated microSDXC slot |
| Cameras | 32 MP rear camera with LED flash + 8 MP selfie, both up to 1080p@30 fps video |
| Battery / Charging | 5200 mAh battery with 15 W wired charging; full charge takes well over 2 hours in reviews |
| Software | Android 15 / Android 15 Go Edition with Xiaomi skin (MIUI/HyperOS A‑series), 2 major Android upgrades promised |
| Platform | UMS9230 Unisoc platform; low‑end budget class tuned for efficiency over raw power |
| Firmware Line | A15.0.x.y.VGW**XM Android 15 global MI/HyperOS builds for serenity (Global / IN / RU / EEA / ID) |
| Package Type | Official fastboot ROMs (.tgz images + flash_all*.bat scripts) from Xiaomi bigota servers |
| Bootloader | Unlocked bootloader required for fastboot flashing or cross‑region installs; stock OTA works on locked devices only |
| Typical Fixes | Bootloops, stuck on logo, system app crashes, failed OTA updates, FRP/user‑lock repair after service work and general software slowdowns |
Download Official Firmware for Redmi A5 / POCO C71 (serenity)
Below are official Android 15 A15.0.x.y fastboot packages for Redmi A5 / POCO C71, covering Global, India, Russia, EEA and Indonesia channels. Each ROM contains complete system and vendor images plus scripts, so you can perform a clean install, unbrick or downgrade/upgrade within the same Android 15 line if needed.
| Filename | Size | Build / Date | Android / Region | Flashing Type | Download Link |
|---|---|---|---|---|---|
| serenity_global-images-A15.0.14.0.VGWMIXM-user-20251108.0000.00-15.0-global-630ac1f5b7.tgz | 4.41 GB | A15.0.14.0.VGWMIXM · 2025‑11‑08 | Android 15 · Global (MI) stable/beta fastboot ROM | Full fastboot images (Global) | Download A15.0.14.0 Global (Mi bigota) |
| serenity_in_global-images-A15.0.12.0.VGWINXM-userroot-20251010.0000.00-15.0-in-9e7bf3be2c.tgz | 3.26 GB | A15.0.12.0.VGWINXM · 2025‑10‑10 | Android 15 · India (IN) stable fastboot ROM | Full fastboot images (India) | Download A15.0.12.0 India (Mi bigota) |
| serenity_ru_global-images-A15.0.8.0.VGWRUXM-user-20251010.0000.00-15.0-ru-316f1a0ff7.tgz | 3.37 GB | A15.0.8.0.VGWRUXM · 2025‑10‑10 | Android 15 · Russia (RU) stable fastboot ROM | Full fastboot images (Russia) | Download A15.0.8.0 Russia (Mi bigota) |
| serenity_eea_global-images-A15.0.10.0.VGWEUXM-user-20251108.0000.00-15.0-eea-997be950c3.tgz | 3.65 GB | A15.0.10.0.VGWEUXM · 2025‑11‑08 | Android 15 · EEA (EU) stable fastboot ROM | Full fastboot images (EEA) | Download A15.0.10.0 EEA (Mi bigota) |
| serenity_id_global-images-A15.0.7.0.VGWIDXM-user-20251028.0000.00-15.0-id-d3a948e0a8.tgz | 3.63 GB | A15.0.7.0.VGWIDXM · 2025‑10‑28 | Android 15 · Indonesia (ID) stable fastboot ROM | Full fastboot images (Indonesia) | Download A15.0.7.0 Indonesia (Mi bigota) |
Mid‑cycle A15.0.x.y builds mostly bump Android security patch levels and refine overall system stability rather than adding big new features, but they are essential if your device is stuck on an older or buggy release.
Flashing Requirements
- Windows PC with Xiaomi USB drivers and Mi Flash Tool installed, and at least 10–15 GB free space for the extracted fastboot ROM.
- Unlocked bootloader on Redmi A5 / POCO C71 if you plan to flash via fastboot instead of stock OTA/recovery.
- Good quality USB‑C cable plugged directly into the PC (avoid loose ports or cheap hubs to reduce disconnection risks).
- Battery charged to at least 50–60 % so the phone cannot power off during flashing, which can cause severe bricks.
- Complete backup of photos, chats and app data because recommended “clean all” fastboot modes will wipe internal storage.
How to Flash the Firmware
Quick steps – Mi Flash Tool (fastboot ROM)
- Download the correct serenity .tgz file for your region and extract it until you see the images folder and flash_all*.bat scripts.
- Open Mi Flash Tool, click “Select” and point it to the extracted firmware directory.
- Boot Redmi A5 / POCO C71 into fastboot mode, connect via USB and click “Refresh” in Mi Flash to confirm the device is detected.
- Choose the “clean all” option (recommended for repair or major update) and press “Flash”, waiting until Mi Flash shows a green success status.
- Reboot; the first boot after a full flash can take several minutes while Android 15 and apps are optimized.
Quick steps – fastboot script (flash_all.bat)
- Install platform‑tools (fastboot) on your PC and open a command window in the extracted serenity ROM folder.
- Enter fastboot mode on the phone, connect it and verify detection with fastboot devices.
- Run flash_all.bat (or the appropriate script) to wipe and flash all partitions as defined by the ROM.
- Wait for every command to finish; do not unplug the cable or close the window until the script reports completion without errors.
- Reboot and finish setup; if performance still feels sluggish, consider a manual factory reset and uninstall heavy apps or games that strain the Unisoc T7250.
For step‑by‑step flashing guides with screenshots and troubleshooting tips, refer to these tutorials: how to flash with Xiaomi Mi Flash Tool and how to flash stock firmware using a fastboot flash_all.bat script.
Frequently Asked Questions (FAQs)
What issues can these serenity ROMs fix?
Fastboot ROMs can recover Redmi A5 / POCO C71 units stuck on the boot logo, suffering from soft‑bricks after failed OTAs, FRP/user‑lock problems handled in service, or persistent app crashes caused by corrupted system partitions. They also give you a clean Android 15 base if previous tweaks or mods made the phone unstable.
Which region build should I choose?
Always match the ROM region to your original device sales region: VGWMIXM for Global, VGWINXM for India, VGWEUXM for EEA/Europe, VGWIDXM for Indonesia and VGWRUXM for Russia. Flashing a mismatched region may cause network band issues, IMS/VoLTE problems or blocked OTAs later.
Will these updates improve performance and battery life?
A clean flash of the latest A15.0.x.y build often removes leftover bugs and improves overall smoothness, but heavy 3D games can still stutter due to the entry‑level Unisoc T7250 and eMMC storage. Battery life is generally strong thanks to the 5200 mAh cell, though 15 W charging remains slow regardless of firmware.
Does flashing the fastboot ROM wipe my data?
Yes, using Mi Flash in “clean all” or running flash_all.bat will erase user data and internal storage, so a full backup is essential before flashing. Only advanced users sometimes use partial scripts or “save data” modes, but for reliability on budget hardware, a clean wipe is strongly recommended.
How do I confirm my phone is really codename serenity?
In fastboot mode, run fastboot getvar product; it should return serenity for Redmi A5 / POCO C71, matching ROM portals and Google Play certificates mapping model 25028PC03G/25028PC03I to this codename. If you see a different codename, do not flash these files, as they are not compatible with your device.
