On x86/x64-host you need cross compile tools for the armhf architecture:
sudo apt-get install gcc-arm-linux-gnueabihf libc6-armhf-cross u-boot-tools make gcc swig python-dev
- loadenv failes because of resized environment (4096 => 8188)
- backup your saved environment before update uboot or change back CONFIG_ENV_SIZE to SZ_4K (./build.sh soc)
- erase your saved environment
mmc erase 800 10
- no emmc-command (not needed "emmc pconf 0x48" = "mmc partconf 0 1 1 0")
./build.sh importconfig
./build.sh config #optional (menuconfig)
./build.sh
./build.sh install #write to sd-card
./build.sh umount #umount automatic mounted partitions