This is a driver mismatch. You need to flash only the kernel (boot.img) and logo.bin from your original backup while keeping the new Android 9 system. Use the "Download Only" mode but only check those two partitions.
Download the latest version of the SmartPhone Flash Tool for Windows or Linux. mt6580 firmware android 9 install
This feature provides a comprehensive, step-by-step solution for installing Android 9.0 (Pie) custom firmware on devices powered by the MediaTek MT6580 chipset. Given that the MT6580 is a legacy 32-bit quad-core processor often natively limited to Android Lollipop or Marshmallow, this installation process enables users to modernize their devices with updated UI aesthetics, improved power management, and enhanced security features unavailable in stock firmware. This is a driver mismatch
Wait for the process to finish. A popup window with a green checkmark icon () will signal a successful installation. 🚀 Post-Installation Protocol Once the green checkmark appears: Disconnect the USB cable from your phone. Download the latest version of the SmartPhone Flash
Warning: You cannot flash a generic MT6580 firmware. The firmware be built explicitly for your exact phone brand and model number.