The latest build (Release NMOL31_v5.2_Oct23) includes:
Here are the most stable, recently updated builds available right now. huawei nmol31 custom rom updated
fastboot flash recovery twrp_nmol31.img
fastboot reboot recovery
Flashing a custom ROM on the NMO-L31 is not for beginners. You need the following: The latest build (Release NMOL31_v5