Modern MediaTek devices employ Secure Boot protection that blocks unauthorized software from interacting with the RAM. If your phone requires an authentication file, it will throw an exception error without it.
The default MTK_AllInOne_DA.bin file included with SP Flash Tool might not support your specific device's RAM configuration. sp flash tool error status ext ram exception link
Work through these troubleshooting steps sequentially, starting with the easiest software fixes. 1. Match the Exact Firmware and Preloader Modern MediaTek devices employ Secure Boot protection that