Hello,
afaik v1 and v2 are the same except for some cosmetic changes. According to wiki both version should be supported.
https://openwrt.org/toh/hwdata/zyxel/zyxel_nsa325
I did many reboots. I am currently using it the way that I manually enable the raid via the GDB. This is most puzzling for me - why the command fails in normal environment and succeeds in gdb.
I would like to open issue to describe the problem but I do not know how to do it. Could anyone direct me?