If your phone is still functional, prefer OTA (Over-the-Air) updates:
: If the firmware defaults to Chinese after a reset, you can typically find the language settings by looking for the "three dots" or "globe" icon in the system settings menu. Troubleshooting "Dead" Devices china mobile a4s firmware
If you used "Format All + Download," you may have lost IMEI (no network). If your phone is still functional, prefer OTA
China Mobile does not publicly host firmware. Authorized service centers use proprietary servers. However, some regional governments (like China Telecom’s database) occasionally release update packages. If your phone is still functional