Download Tecno Camon CX Air (CXAir-H3713A1-N-170330V91) official firmware from the link here, and follow the provided flashing instructions to learn how to flash the stock rom.
If you notice that any of the links provided below are broken or don’t work, please post it in the comments section so we can fix and update it ASAP.
Device Core Specs
Model: Tecno CX Air
Processor: 1.25GHz quad-core Processor
GPU: Mali-T720 MP2
OS: Android 7.0 (Nougat), HIOS 2.0
Internal Memory: 16GB Storage
SD Card Slot: up to 128GB
Memory: 2GB RAM
SIM Type: Micro-SIM (Dual SIM)
Display: 5.5-inch Touch Display, 720 x 1280 pixels (267 ppi)
Primary Camera: 13 MP Camera, 1080p HD Video
Secondary Camera: 13MP Camera, Dual-LED Flash
2G: Yes
3G/WCDMA/HSPA: Yes
4G LTE: Yes
WLAN: Wi-Fi 802.11 b/g/n
Bluetooth: 4.0 with A2DP
NFC: No
USB Port: microUSB 2.0
GPS: A-GPS
Battery Capacity: 3200 mAh Li-ion Battery (Non-removable)
Download Options
File Name: Tecno CX Air (CXAir-H3713A1-N-170330V91).zip
Size: 1.61 GB
Android version: 7.0
Firmware – Download
How to flash
After downloading the Flashtool firmware, follow the instructions here to flash. You can as well flash the firmware via Miracle Box, if you have problems while flashing with SP Flash tool.