I am not a MI 9 TE owner, and so i cant be 100% sure of course, but reading technical specs, differences are only for ram amount (12g) and storage size (256 gb). Other features, and its cpu/soc, are same as other MI9 versions, and so, you could use same xiaomi.eu already available.
It's a bit risky of course, but, after all, can be considered a calculated risk.