Sinovoip BananaPi BPI-R4 how to installing directly to emmc

Sinovoip BananaPi BPI-R4 how to installing directly to emmc

https://openwrt.org/inbox/toh/sinovoip/bananapi_bpi-r4#installing_directly_to_emmc

try follow this, worked for me as well while installed the bpi-r4 a month ago. and no NVMe issue