Man I’m impressed u managed to compile twrpOkay guys. Let me explain:
I don't have your device on hand for testing, let alone any A/B device (_a; _b).
But at a future time I believe I will need to have a TWRP for the boot partition. I've been compiling the TWRP from Team Win sources for some time ago and it's neither hard nor easy. It depends a lot on the user experience on giving the correct information and how the device ROM was built.
In the case with ZTE Blade/Yahoo, we clearly have the inclusion of company information and some particulars that make a big difference or will just be inconspicuous on something.
The attached file contains version 3.5.2_10 boot_a.img which has been compiled from sources for anyone here to test.
But I make a big WARNING! I cannot guarantee it will work.
Backup everything you can before any test installation of the file!
This is a second file I made. The first file (3.5.1_10) is with jasonmerc and I don't know the result. But I think it has a 99% chance of not starting. So I did this 3.5.2_10 to have a better chance of knowing.
The TWRP3.5.2_10/boot_a.img file contains minimal information and file dependencies. Then anything can happen.
Good luck and let me know the installation steps and the result.