Cannot find ROCK S0 loader file

[Salmos_Hu]

cannot find ROCK S0 (eMMC) loader file in
https://docs.radxa.com/rockpi/rocks0/low-level-dev/rkdevtool
so where I can find this file？

Thanks！

[Mitchell]

https://dl.radxa.com/rockpis/images/loader/rk3308_loader_uart0_m0_emmc_port_support_sd_20190717.bin