For more specific troubleshooting or help with Secure Boot DA files, you can visit the dedicated Tecno MTK Download Agent thread on Hovatek. Tecno Feature Phone Stock ROMs | Firmware | Flash Files
If system apps are crashing or the phone is running unusually slow. Tecno T528 Firmware Download Links Tecno T528 Firmware Hovatek- %21FREE%21
Always verify your build number (found under the battery) matches the firmware you are downloading to avoid hard-bricking the phone. For more specific troubleshooting or help with Secure