As Mediatek's chip security has evolved, we have seen an increased complexity in flashing firmware (like -sign.img & Secure Boot). Its no more (always) as easy as just loading a scatter file and flashing using SP flash tool. DAs are strategic following the increase in the need for boxes and dongles to perform tasks; even in the use of SP Flash Tool to bypass Factory Reset Protection (FRP).
A Download Agent (DA) enables your favorite Mediatek Flash Tool to read and write to the device. In a case where the default DA can't, you'll encounter constant errors or the phone just powering up when you connect (this dates as far back as the Tecno M3S & P5S). This is where a custom DA file comes in. Depending on the tool you're using, you manually load the custom DA ( MTK_AllInOne_DA_SP.bin or DA_SWSEC.bin ).
A Download Agent (DA) enables your favorite Mediatek Flash Tool to read and write to the device. In a case where the default DA can't, you'll encounter constant errors or the phone just powering up when you connect (this dates as far back as the Tecno M3S & P5S). This is where a custom DA file comes in. Depending on the tool you're using, you manually load the custom DA ( MTK_AllInOne_DA_SP.bin or DA_SWSEC.bin ).
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