Zyxel NSA 325 v2 - *** ERROR: `serverip' not set - Cannot autoload with TFTPGET (1 reply)

Hi everyone, first of all THANKS for your work ! I'm a owner of NSA 325 v2 (made by zyxel) and I'd really like to install on it a new OS (Debian on this case).
I'm reading many post on the forum but unfortunately I need your help to understand my error.

Loading the u-boot image of this thread: https://forum.doozan.com/read.php?3,135222 using UART device I have an issue (see object) for which Debian OS is not started.

I've prepared an USB disk within inside Debian : Debian-5.13.6-kirkwood-tld-1-rootfs-bodhi.tar.bz2 following the guide (ext3 partition; user: root; ... )

I'm not able to understand once that kwboot should start OS I receive the following error:

....
97 % [......................................................................]
 99 % [....................................]
[Type Ctrl-\ + c to quit]


U-Boot 2023.04-tld-1 (Jun 24 2023 - 17:50:21 -0700)
ZyXEL NSA325 2-Bay Power Media Server

SoC:   Kirkwood 88F6282_A1
Model: ZyXEL NSA325
DRAM:  512 MiB
Core:  19 devices, 15 uclasses, devicetree: separate
NAND:  128 MiB
Loading Environment from NAND... *** Warning - bad CRC, using default environment

Resetting console stdin/stdout/stderr to serial...
In:    serial
Out:   serial
Err:   serial
pcie0.0: Link up
Net:   
Warning: ethernet-controller@72000 (eth0) using random MAC address - 8a:83:ba:0f:25:5a
eth0: ethernet-controller@72000
Hit any key to stop autoboot:  0 
starting USB...
Bus ehci@50000: USB EHCI 1.00
Bus xhci_pci: Register 4000820 NbrPorts 4
Starting the controller
USB XHCI 0.96
scanning bus ehci@50000 for devices... 3 USB Device(s) found
scanning bus xhci_pci for devices... 1 USB Device(s) found
       scanning usb for storage devices... 1 Storage Device(s) found

Device 0: Vendor: Verbatim Rev: PMAP Prod: STORE N GO      
            Type: Removable Hard Disk
            Capacity: 29584.0 MB = 28.8 GB (60588032 x 512)
... is now current device
Scanning usb 0:1...

Device 0: unknown device
ethernet-controller@72000 Waiting for PHY auto negotiation to complete........ done
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
DHCP client bound to address 192.168.1.73 (2926 ms)
*** ERROR: `serverip' not set
Cannot autoload with TFTPGET
<NSA325>

I'm using: kwboot downloaded from this thread: https://forum.doozan.com/read.php?3,7852,7852 (extracting kwboot for tar.gz archive).
I'm loading u-boot image: uboot.2023.04-tld-1.nsa325.kwb (suggested for this NAS).
I did the following test, loadgin uboot image :

• with HD installed on the NAS;
• without HD installed on the NAS;
• with USB installed on front/rear USB port;
• with ethernet cable installed;
• with out ethernet cable installed.

Attached the printenv file within the environment variable.

Thanks for your help.