@cas I figured this out for myself - sorry I should have just re read all instructions again in the first place. I changed the lines: "# define the toolchain and target names TOOLCHAIN_NAME="toolchain-mipsel_24kc_gcc-5.4.0_musl-1.1.16" TARGET_NAME="target-mipsel_24kc_musl-1.1.16" in xCompile.sh to : "# define the toolchain and target names TOOLCHAIN_NAME="toolchain-mipsel_24kc_gcc-7.3.0_musl" TARGET_NAME="target-mipsel_24kc_musl" and the example C gipoRead compiled fine and runs on my board.