Nevermind, i figured it out with the other openwrt thread , which refers to the "stock" bootby kiihmoo - Debian
Hi , i have a Zyxel NSA325v2 flashed successfully with openwrt. I followed the guide from here https://openwrt.org/toh/zyxel/nsa325 usb reset fatload usb 0 0x1000000 u-boot.kwb nand erase 0x0 0x100000 nand write 0x1000000 0x00000 0x100000 reset Now we set the correct environment variables: setenv mtdparts 'mtdparts=orion_nand:0x00c0000(uboot),0x80000(uboot_env),0x7ec0000(by kiihmoo - Debian