Due to the device’s aging hardware (MT6737/MT6580), official custom ROMs like LineageOS are rare. However, the MTK community has produced several and ported ROMs .
Use the latest version of SP Flash Tool for Windows or Linux to install these files. 2. Custom Recovery: Installing TWRP
For users wishing to retain the stock "Official" firmware but gain administrative privileges, the Magisk suite is the standard solution.