The Nova 5T is not dead. It is just waiting for you to install TWRP, wipe the cache, and hit "Install."
For links to the specific Telegram groups, 4pda threads, and TWRP builds—search "Nova 5T Yale custom ROM" or DM the developer 'Vantoman' on XDA.
If you own a Nova 5T and feel abandoned by the slow update cycle, you are not out of options. In fact, you are in a unique position to turn this "orphaned" device into a modern, bloat-free powerhouse. Before we dive into the ROMs, the hard truth. Unlike the wildly popular Snapdragon devices (Xiaomi, OnePlus, Samsung), the Nova 5T runs on Huawei’s Kirin 980 . Kirin chips are notoriously locked down. There is no official Qualcomm-like open-source support.