Kernel update on ReadyNas 102

This is what I use for flashing and updating the kernel on the ReadyNas from user space:

flash_eraseall /dev/mtd2
nandwrite -p /dev/mtd2 uImage-v4.4.1

Seems to work :), but always be careful when writing to the NAND. So double check so that the MTD partitions are the same on your machine.