The Zopo Color X5.5 C1690N M was released in spring 2017 as Zopo’s upper-budget offering, featuring a 5.5-inch HD display, MediaTek MT6737M processor, and Android 6.0 Marshmallow. Within months after rollout, buyers from India and Southeast Asia reported VoLTE signal drops, “phantom” ghost touch events, long device wakeup lag, and failing App Clone function—a pattern confirmed by user ratings on e-commerce and local repair forums. Users observed that C1690N M hardware required unique touchscreen and modem drivers to maintain multi-account stability and proper regional 4G/LTE support. When updated via OTA or after improper flashing, many Color X5.5 units experienced persistent SIM detection failure until restored with the proper regional scatter-based firmware. This official March 28, 2017 build is the most stable package for C1690N M, restoring fingerprint sensor support and original LTE band registration for India.
Zopo Color X5.5 C1690N M Firmware Details
| Device Name | Zopo Color X5.5 C1690N M |
|---|---|
| Chipset | MediaTek MT6737M (Quad-core 1.1GHz) |
| Key Feature | 5.5″ HD Display, Dual SIM LTE, App Clone, Indian VoLTE Bands |
| Android Version | 6.0 Marshmallow |
| RAM / Storage | 3GB RAM / 16GB ROM (expandable) |
| Firmware Version | C1690N_M_MT6737M_20170328 (Production) |
| Build Date | March 28, 2017 |
| File Size | 1.16GB |
| File Type | Scatter-based (.txt) for SP Flash Tool |
| Flashing Tool | SP Flash Tool (MediaTek) |
Download Official Firmware for Zopo Color X5.5 C1690N M
Size: 1.16GB
Build Date: March 28, 2017
Chipset: MediaTek MT6737M
Android Version: 6.0 Marshmallow
Download Link: MediaFire Direct Link
Why Flash This Specific Firmware?
- Restore Indian VoLTE and Jio 4G Band Stability: Users reported frequent VoLTE drops and “No Service” errors that only cleared after a factory modem restore—this build reinstalls C1690N M partition-matched LTE/NVRAM profiles for full regional network support.
- Fix Touchscreen Ghost Touches and Wakeup Lag: C1690N M panels were supplied by a different vendor than other Color X5.5 releases, requiring unique driver calibration. Flashing this file eliminates the “phantom” touch bug on retail Indian units.
- Recover App Clone and Parallel Social Account Function: Multiple reports of WhatsApp or Facebook multi-account clone failing or reverting to single instance were traced to broken AppClone data after partial flash or OTA; this firmware cleans corrupted app data.
- Repair Persistent SIM Slot and Standby Crash Issues: Color X5.5 users describe losing second SIM detection or device freezing in standby; flashing the regional build restores full dual-SIM detection and fixes related power management errors.
- Restore Fingerprint Sensor Recognition: Fingerprint unlock errors sometimes appeared after trying third-party ROMs—this build flashes the required N M drivers for the supported biometric chip.
How to Flash the Firmware
Flashing this scatter-based firmware with SP Flash Tool:
- Setup: Extract firmware. Launch SP Flash Tool, click Scatter-loading, select
MT6737M_Android_scatter.txt. - Mode: Select “Download Only” (not “Firmware Upgrade”) to keep IMEI/SIM data safe.
- Flash: Click Download (green arrow).
- Connect: Power off phone, attach via USB. Wait (~12min); a green checkmark means done. Boot to test LTE, touch, and biometric.
More help? See How to Flash Stock Firmware to MediaTek (MTK) Smartphones
