I have not seen anyone post any twrp yet, so, let me ask what have you found to be issues with building it. --assume it is encryption. If that’s it, I can’t help. But other than that, maybe I can do one.
When I receive this phone I can test it out. From the firmware files, I should be able to start a minimum device tree, I will sync to GitHub.
Recent build tools will work with pre-built kernel image. But they complain that pre-built is deprecated and will not work soon. That being said, do you have available kernel source?
simple device tree is now shared on github.
I have not tested the built product, I have not received device yet. If “Blind” testers are willing let me know. I can share test build.