Move unofficial version to snapshot version (MI 4A Giga Router)

Hi, I am using MI 4A Giga Router with OpenWRT latest version but i want to move current version to snapshot version. How can do this? I did try to flash the snapshot sysupgrade version from Router flash option but the router got bricked and i did unbricked. Let me know, please. Thanks in advance!

What unofficial version was previously installed?

Did you restore Xiaomi stock firmware and then flash OpenWrt?

ps. note that official snapshot versions do not include LuCI.