I recently flashed the snapshot initramfs image to my GS1900-24E.
I rebooted, having a serial console connected and at the first glance all looks fine.
I see all interfaces, the ip address is 192.168.1.1 and ports show correct connectivity status.
Unfortunately, the device is not reachable from outside (my directly connected pc uses 192.168.1.211/24). Also i can not ping any device in the network from the serial console.
I changed ip-address, gateway, cable etc. nothing helps.
I would like to continue the installation with installing the sysupgrade image, but i have no idea, how to get the file on the device.
This makes it rather easy, as you can simply tftpboot another initramfs image (e.g. 23.05 or 24.10-RC, as andyboeh suggested) to see what happens there.
OpenWrt recently (at least in main, I think this was also backported to 24.10) had to strip down to images, to fit into the partitioning constraints of the OEM firmware - as a result the switch no longer acts as a 'normal' router by default (e.g. no DHCPd installed/ running).