This post will provide the stock rom(flash file) for Tecno K7 and Tecno K9 which you can use to flash you device and restore back to its factory settings. Below are some specification of both devices;
Tecno Spark Plus K9 Key Specs & Features
6.0-inch IPS Display, 720 x 1280 pixels (244ppi) 1.5GHz octa-core CPU with 2GB RAM 16GB Storage with support up to 32GB memory card 13MP Rear Camera and 5MP Front Camera Fingerprint Sensor (Rear) Tecno Spark K7 Key Specs & Features
5.5-inch IPS Display, 720 x 1280 pixels (267ppi) 1.3GHz octa-core CPU with 1GB / 2GB RAM 16GB Storage with support up to 32GB memory card 13MP Rear Camera and 5MP Front Camera Fingerprint Sensor (Rear) How To Flash Using SP Flash Tool: Extract the Stock ROM (Firmware) on your computer. Install the USB Drivers (skip this step if drivers are already installed). Select the Scatter-loading. Select the Scatter File from the Stock ROM (Firmware) you have Dwnlded. Select Format and click Start. Connect device >> holding volume + and volume – button of your device at the same time or holding power button only. Patiently wait for the device to be formatted. Select Dwnld and click Start. Connect device & Patiently wait for the process to complete. [*] Take a Backup: If you are going to flash the above Firmware on your Infinix Zero 4 Plus device, then take a backup of everything as because your personal data will be deleted after flashing the stock firmware.
[*] The firmware shared on this page is officially released by the company and helps you to recovery your device if you ever got bootloop, software error, update error, hanging and dead issue.
tecno K7 stock rom, Dwnld tecno k9 spark flash file and how to flash using SP flash tool