For the , "verified" custom ROM support is extremely limited because Huawei officially terminated its bootloader unlock code service in July 2018. Without an unlocked bootloader, you cannot install a custom ROM. The Bootloader Unlock Barrier
She spent the next three hours building the payload. First, she dumped the original stock ROM’s vbmeta signature from a backup. Then, she inserted that hash into her custom ROM’s super partition, right where the bootloader would look. She signed the whole thing with a test key, then overwrote the test signature with the original hash in the misc3 region. It was a lie—a cryptographic forgery. The bootloader would see the stock hash, think “this is safe,” and then load her entirely modified system. nova 5t custom rom verified