Use prebuild system.img and get the ubports edge rootfs from here.
Boot into TWRP and install it with the JBB's halium-install script.
./halium-install -p ut ubports-touch.rootfs-xenial-edge-armhf.tar.gz system.img
adb push halium-boot.img /tmp
Use prebuild system.img and get the ubports edge rootfs from here.
Boot into TWRP and install it with the JBB's halium-install script.
./halium-install -p ut ubports-touch.rootfs-xenial-edge-armhf.tar.gz system.img
adb push halium-boot.img /tmp