Yes, I have a bricked Z1 (the old version).
Netflix stopped working so I started experimenting with software from other boxes like X96Q Pro.
I managed to get Netflix to work with Magisk and Play Integrity Fix but then I discovered that Bluetooth doesn't work and I need it in my setup for audio and the remote.
I'm considering Armbian now as there is no way to get the original firmware.
Just don't know if it will work for me as I need Disney+, Netflix, Apple TV (and maybe Prime) with some nice interface to operate it through a remote - so Android.