using another laptop and debian solved my problem. Thanks for helpby gesa - uBoot
tried repeating the command but nothing happens than that I'm asked again to reboot the targetby gesa - uBoot
trying to unbrick a Zyxel NSA310 fails with below message. No idea whats wrong. The serial worked before I bricked the device. Any body an idea? kwboot -t -B 115200 /dev/ttyUSB0 -b u-boot.kwb -p Sending boot message. Please reboot the target...\ Sending boot image... 0 % [+++++++++++++++++xmodem: Bad messageby gesa - uBoot
where can I download kwboot for linux, did not find itby gesa - uBoot