I am trying to flash Zyxel NSA320S, but I am having trouble understanding the procedure. I am working on Ubuntu 25.10. What I have achieved so far:
1. I connected the console to the motherboard (UART USB converter) and using picocom I can see the messages sent by the board during the startup of the built-in factory firmware.
2. I downloaded the files uboot.2023.04-tld-1.nsa325.bodhi.tar and uboot.2017.07-tld-1.nsa320.mtd0.kwb (both versions, just in case).
3. Using kwboot (version 2025.01, installed from system repositories), I load either version 2017 or 2023 onto the board using a UART connection.4. I see the loading percentage increasing, ending like this:
And nothing else happens. After pressing Ctrl+\ and then c, I exit to the Ubuntu command line.
I also tried the USB key method. In fdisk, I created a partition, formatted it to Ext4, named it rootfs, copied the Debian-5.6.7-kirkwood-tld-1-rootfs-bodhi. tar.bz2 file there, decompressed it with sudo tar xjf, changed ext3 to ext4 in /etc/fstab. I inserted the key first into the front USB port, then into the rear one. I connected via picocom, booted the disc, and the system loaded with the factory firmware.
I don't know what to do next. I'm out of ideas. I'm probably missing some important step. Can you help me?
1. I connected the console to the motherboard (UART USB converter) and using picocom I can see the messages sent by the board during the startup of the built-in factory firmware.
2. I downloaded the files uboot.2023.04-tld-1.nsa325.bodhi.tar and uboot.2017.07-tld-1.nsa320.mtd0.kwb (both versions, just in case).
3. Using kwboot (version 2025.01, installed from system repositories), I load either version 2017 or 2023 onto the board using a UART connection.4. I see the loading percentage increasing, ending like this:
94 % [......................................................................] 96 % [......................................................................] 98 % [......................................................................] 99 % [.. ] Done Finishing transfer [Type Ctrl-\ + c to quit]
And nothing else happens. After pressing Ctrl+\ and then c, I exit to the Ubuntu command line.
I also tried the USB key method. In fdisk, I created a partition, formatted it to Ext4, named it rootfs, copied the Debian-5.6.7-kirkwood-tld-1-rootfs-bodhi. tar.bz2 file there, decompressed it with sudo tar xjf, changed ext3 to ext4 in /etc/fstab. I inserted the key first into the front USB port, then into the rear one. I connected via picocom, booted the disc, and the system loaded with the factory firmware.
I don't know what to do next. I'm out of ideas. I'm probably missing some important step. Can you help me?