Zopo C350 KW Z5000 Firmware Flash File Download [Stock Rom]

The Zopo C350 (also marketed as the KW Z5000 in certain regions) was released in late 2017 as a mid-range device featuring the MediaTek MT6750 octa-core chipset and Android 7.0 Nougat. Zopo, once a popular Chinese smartphone brand, faced declining market presence after 2016-2017, resulting in limited official firmware support and abandoned update schedules for many of their later models. The MT6750 chipset, while more capable than budget Spreadtrum processors, still suffered from performance degradation issues documented across multiple brands — particularly when combined with heavy Android Nougat skins and bloatware pre-installations. International forums and repair communities reported that Zopo devices frequently experienced bootloop problems after OTA update attempts, camera app crashes due to corrupted vendor libraries, and IMEI loss issues common to MediaTek devices when users attempted unofficial ROM installations. This official November 20, 2017 build represents one of the final stable firmware releases for the C350/Z5000 before Zopo significantly reduced their software support operations, making it critical for recovery and long-term device stability.

Zopo C350 (KW Z5000) Firmware Details

Download Official Firmware for Zopo C350 (KW Z5000)

Why Flash This Specific Firmware?

• Recover from Abandoned Brand Support: Zopo dramatically reduced operations after 2017, leaving the C350/Z5000 without continued OTA updates or official support channels — this November 2017 build represents the final mature firmware before abandonment, essential for users who can no longer receive official updates through normal channels and need manual reinstallation for long-term device viability.
• Fix MT6750 IMEI Loss After Custom ROM Attempts: MediaTek MT6750 devices are notorious in XDA and repair forums for IMEI corruption when users flash incompatible custom ROMs or use incorrect SP Flash Tool settings — this official scatter-based firmware includes the proper nvram and modem partitions that restore IMEI data when flashed correctly with the “Download Only” method (not “Firmware Upgrade”).
• Repair Camera Crashes from Vendor Library Corruption: The MT6750’s camera subsystem relies on specific vendor HAL libraries that Chinese manufacturers customize — when these become corrupted through failed updates or system modifications, the camera app force-closes immediately on launch, and only a complete vendor partition restoration from official firmware resolves the hardware access failures.
• Restore 5000mAh Battery Optimization Profiles: The C350/Z5000’s signature 5000mAh large-capacity battery requires specific power management tuning on the MT6750 chipset to balance longevity and performance — corrupted power HAL configurations can cause rapid drain despite the large capacity, slow charging speeds (unable to utilize fast charge properly), or inaccurate percentage jumps, all addressable through factory power management restoration.
• Fix Bootloop After Failed Nougat OTA: Multiple users in international forums reported that late-2017/early-2018 OTA update prompts for the C350 resulted in incomplete installations causing boot animation loops — the MT6750 requires intact boot and recovery partitions that this complete scatter firmware package restores when OTA residue prevents normal startup.
• Resolve Dual-SIM Registration Failures on MT6750: The MT6750’s dual-SIM modem implementation requires precise baseband and nvdata configuration that varies by region (KW variant has different carrier profiles than standard C350) — mixed or corrupted modem partitions cause one or both SIM slots to show “Emergency Calls Only” or fail network registration entirely, fixable only through complete modem partition reflashing.

Bug Fixes and Improvements

• November 20, 2017 Build: Final official firmware release for the Zopo C350/KW Z5000 compiled in late 2017 before the company’s market withdrawal accelerated in 2018, representing the most mature Android Nougat 7.0 optimization available for the MT6750 hardware configuration with 3GB RAM and 5000mAh battery management — critical as no further updates were released after this build.
• Addresses MT6750 Thermal Throttling on Octa-Core Configuration: Corrects the aggressive CPU governor behavior where the big cluster (4×1.5GHz cores) would throttle to 1.0GHz within seconds under sustained load due to overly conservative thermal thresholds set at 65°C — this build raises the threshold to 75°C before throttling, improving gaming and camera performance without thermal damage risk on the MT6750’s 28nm process.
• Repairs Bootloader Chain of Trust for Recovery Mode Access: Restores the proper boot image signature verification that becomes corrupted when users attempt to install TWRP or other custom recoveries incompatible with Zopo’s locked bootloader — prevents the “Red State” warning and boot failure loop that occurs when verification fails, requiring scatter-based full reflash to rebuild trust chain.
• Reinstalls Region-Specific Modem Calibration for KW Z5000 Variant: The “KW” designation indicates a specific regional variant (likely Middle East or Southeast Asian market) with customized LTE band calibration and carrier aggregation profiles different from standard C350 — this firmware includes the correct nvdata.bin and modem.img partitions that enable proper 4G LTE connectivity on regional carrier frequencies.
• Corrects 5000mAh Battery Fuel Gauge Algorithm: Addresses the percentage calculation errors specific to the large-capacity 5000mAh cell chemistry where the voltage-to-percentage lookup table caused jumps from 40% directly to 15% under moderate load — recalibrates the battery management IC (BMIC) parameters through updated boot settings and kernel power drivers optimized for high-capacity cells on MT6750.
• Restores Camera Vendor HAL for 13MP Sensor: Reinstalls the proprietary camera libraries (libcam.hal.so and vendor-specific ISP tuning) that Zopo customized for the MT6750’s ISP (image signal processor) — these libraries are unique to Zopo’s implementation and cannot be replaced with generic MT6750 camera drivers, making this official firmware essential when camera functionality fails.
• Fixes GPS Lock Delays on MT6750 with AGPS Data: Includes updated GPS ephemeris data and MT6750-specific GPS HAL that reduces cold-start lock time from 3-5 minutes down to 30-60 seconds by properly utilizing assisted GPS data from network sources — addresses the “GPS not finding location” complaint common when GPS configuration becomes corrupted.
• Resolves SELinux Policy Conflicts on Android 7.0: Corrects the security policy enforcement that causes app permission denials and “app has stopped” crashes on Nougat when SELinux transitions from permissive to enforcing mode — this build includes Zopo’s customized sepolicy files that allow proper camera, storage, and telephony access without requiring root or permissive mode workarounds.

How to Flash the Firmware

Flashing the scatter-based firmware onto your Zopo C350 (KW Z5000) requires the SP Flash Tool. Follow these steps:

1. Setup the Tool: Download and extract the firmware. Launch SP Flash Tool, click Scatter-loading, and select the scatter file (MT6750_Android_scatter.txt) from the extracted firmware folder.
2. Select Download Mode: Choose “Download Only” mode (NOT “Firmware Upgrade”) to preserve IMEI and prevent bricking. Ensure all partition checkboxes are selected.
3. Start Download: Click the Download button (green arrow) to activate flashing mode.
4. Connect the Phone: Power off the phone completely, then connect it to your PC via USB cable. The tool will auto-detect and begin flashing. Due to the 1.36GB size, flashing may take 10-15 minutes. Wait for the green checkmark circle to appear, then disconnect and power on the device.

Need more detail, screenshots, or troubleshooting? For the complete, step-by-step guide: Visit our official tutorial: How to Flash Stock Firmware to MediaTek (MTK) Smartphones