I’m trying to update my Tegra-TK1 Jetson with a kernel I built on the device itself. I’ve been able to do this with the 19.3 revision, but not 21.1. I’ve downloaded the pieces (fs/LT4) and follwed the guides ([HowTo] Build own kernel for Jetson TK1) on this forum. I can reflash the entire system (sudo ./flash jetson-tk1 mmcblk0p1) but when executing the kernel only option (sudo ./flash -k 6 jetson-tk1 mmcblk0p1) it fails after flashing fastboot.bin with the message: ‘can’t find boot.img’. Any thoughts? I’ve put my updated kernel in the both recommended locations (kernel, rootfs/boot).