The uboot.bins are only 2 files. If replacing one cannot take effect, then replace both of them to try.
Linux_for_Tegra/bootloader$ find -iname “u-boot.bin”
./t186ref/p2771-0000/000/u-boot.bin
./t186ref/p2771-0000/500/u-boot.bin
The uboot.bins are only 2 files. If replacing one cannot take effect, then replace both of them to try.
Linux_for_Tegra/bootloader$ find -iname “u-boot.bin”
./t186ref/p2771-0000/000/u-boot.bin
./t186ref/p2771-0000/500/u-boot.bin