The Redmi 15C and POCO C85 (codename dew) are large 6.9‑inch budget phones built around a MediaTek Helio G81‑class chip, 6000 mAh battery and HyperOS 2.0 based on Android 15, aimed at users who want big screens and long battery life without a flagship price.
Early HyperOS builds on Xiaomi’s budget range, including Redmi 15C, have drawn user complaints about aggressive memory management, occasional app closing in background, camera “cannot connect” errors and temporary battery drain after updates.
The official dew Fastboot ROMs below – OS2.0.213.0 for Global and EEA plus OS2.0.204.0/205.0/206.0 for Russia, Indonesia, Taiwan and Turkey – deliver newer security patches and are part of Xiaomi’s bug‑fix waves that tackle stability issues, camera glitches and power optimisation on HyperOS 2 devices.
Redmi 15C / POCO C85 (dew) Firmware Details
| Device Names | Redmi 15C (4G) / POCO C85 |
|---|---|
| Codename | dew |
| Chipset | MediaTek Helio G81‑class octa‑core, Mali‑G52 MC2 GPU |
| Display / Battery | 6.9″ IPS 120 Hz HD+ panel, 6000 mAh battery for extended use |
| Software | HyperOS 2.0 on Android 15 with regional builds for Global, EEA, RU, ID, TW and TR |
| Stable Builds Here | OS2.0.213.0.VBNMIXM, OS2.0.213.0.VBNEUXM, OS2.0.206.0.VBNRUXM, OS2.0.205.0.VBNIDXM, OS2.0.204.0.VBNTWXM, OS2.0.204.0.VBNTRXM |
| File Type | Official Fastboot TGZ packages from Xiaomi bigota servers |
| Use Cases | Manual update, clean reinstall, unbrick soft‑bricked units, fixing software bugs and camera/connectivity issues |
Download Official Firmware for Redmi 15C / POCO C85 (4G) (dew)
Use this table to select exactly the right HyperOS Fastboot ROM for your dew device based on build number, Android version and region so you avoid compatibility problems after flashing.
| Filename | File Size | Build Date | Build Version | Android / HyperOS | Flashing Type | Region | Download Link |
|---|---|---|---|---|---|---|---|
| dew_global_images_OS2.0.213.0.VBNMIXM_20251010.0000.00_15.0_global_a96de49a69.tgz | 7.19GB | 2025‑10‑10 | OS2.0.213.0.VBNMIXM | Android 15 / HyperOS 2.0 | Fastboot | Global (MI) | Download OS2.0.213.0 Global (Xiaomi server) |
| dew_ru_global_images_OS2.0.206.0.VBNRUXM_20250927.0000.00_15.0_ru_12c95f7298.tgz | 7.08GB | 2025‑09‑27 | OS2.0.206.0.VBNRUXM | Android 15 / HyperOS 2.0 | Fastboot | Russia (RU) | Download OS2.0.206.0 Russia (Xiaomi server) |
| dew_id_global_images_OS2.0.205.0.VBNIDXM_20251030.0000.00_15.0_id_9b693ade89.tgz | 6.80GB | 2025‑10‑30 | OS2.0.205.0.VBNIDXM | Android 15 / HyperOS 2.0 | Fastboot | Indonesia (ID) | Download OS2.0.205.0 Indonesia (Xiaomi server) |
| dew_eea_global_images_OS2.0.213.0.VBNEUXM_20251010.0000.00_15.0_eea_989cb6f7f1.tgz | 6.73GB | 2025‑10‑10 | OS2.0.213.0.VBNEUXM | Android 15 / HyperOS 2.0 | Fastboot | Europe EEA (EU) | Download OS2.0.213.0 EEA (Xiaomi server) |
| dew_tw_global_images_OS2.0.204.0.VBNTWXM_20251030.0000.00_15.0_tw_39835b3462.tgz | 6.52GB | 2025‑10‑30 | OS2.0.204.0.VBNTWXM | Android 15 / HyperOS 2.0 | Fastboot | Taiwan (TW) | Download OS2.0.204.0 Taiwan (Xiaomi server) |
| dew_tr_global_images_OS2.0.204.0.VBNTRXM_20251030.0000.00_15.0_tr_2f542f78dd.tgz | 6.29GB | 2025‑10‑30 | OS2.0.204.0.VBNTRXM | Android 15 / HyperOS 2.0 | Fastboot | Turkey (TR) | Download OS2.0.204.0 Turkey (Xiaomi server) |
Flashing Requirements
- Windows PC or laptop with the latest Xiaomi / Mi Flash Tool installed to handle dew Fastboot TGZ packages safely.
- Original or high‑quality USB Type‑C cable to keep a stable Fastboot connection during the entire flashing process.
- Unlocked bootloader on the Redmi 15C or POCO C85 because official Fastboot ROMs will not flash on a locked bootloader.
- Battery charge of at least 60% to reduce the risk of shutdown mid‑flash, which can corrupt partitions and cause bootloops.
- Full backup of apps, photos and internal storage since clean Fastboot flashes usually wipe user data and reset HyperOS settings.
How to Flash the Firmware
- Download the exact dew Fastboot ROM for your region from the table above and extract the TGZ file on your PC.
- Install Mi Flash Tool and Xiaomi USB drivers, then power off the phone and boot into Fastboot mode using the hardware key combination.
- Connect the device to the PC, open Mi Flash Tool, select the extracted firmware folder and confirm that the dew device is detected.
- Choose the preferred mode (clean all is recommended for bug fixing) and click Flash, avoiding any cable movement until the tool finishes.
- When Mi Flash reports success, reboot the phone; the first HyperOS boot after OS2.0.213.0 or similar updates may take several minutes while apps are optimised.
For step‑by‑step instructions with screenshots, follow the dedicated Xiaomi Mi Flash Tool guide, and if you use the included Fastboot scripts such as flash_all.bat also review the Fastboot script flashing tutorial alongside these dew ROMs.
Frequently Asked Questions (FAQs)
What issues can these dew HyperOS updates fix?
Recent HyperOS bug reports mention fixes for the rare “camera cannot connect” error on Redmi 15C, along with broader patches for security, stability and battery behaviour in HyperOS 2.0.
How do Redmi 15C / POCO C85 users choose the right ROM?
Check Settings → About phone to confirm codename dew and region (Global, EEA, RU, ID, TW or TR), then download the matching Fastboot package so modem bands, features and OTA updates keep working normally.
Will updating to OS2.0.213.0 help battery drain?
Users and HyperOS progress reports show that newer stable builds often improve idle drain and gaming efficiency compared with first releases, and at least one Redmi 15C user notes a follow‑up update restoring normal battery life after earlier drain.
Why do some users still complain after HyperOS updates?
Budget Xiaomi phones like Redmi 15C can still show aggressive RAM management, background app closing and minor UI bugs even on HyperOS, so flashing the latest dew ROM reduces but does not always eliminate every software issue.
Do these Fastboot ROMs stop future OTA updates?
If the ROM region matches your original variant, OTA updates usually continue, but cross‑region flashing or ongoing bootloader unlocking can affect update policy on some HyperOS devices.
