In MediaTek’s boot architecture:

This usually means the DA file you are using doesn't support the specific security revision of your phone. You may need a "Custom DA" provided by your phone's manufacturer.

But not like a phone.

mtk-allinone-da.bin stands for MediaTek All-in-One Download Agent binary file. The Download Agent (DA) is a critical component in the process of flashing or modifying the firmware of MediaTek-based devices. It acts as a bridge between the computer (usually running Windows) and the MediaTek device, facilitating the communication necessary for flashing firmware, preloader, or other critical components of the device.