: Huawei officially stopped providing bootloader unlock codes in 2018. Alternative Methods :
Before diving into ROMs, it is crucial to understand the hardware limitation. The MediaPad M5 Lite runs on the HiSilicon Kirin 659 processor. Huawei Mediapad M5 Lite Custom Rom
: An official Treble-based ROM by phhusson is one of the most cited options for this specific tablet on XDA Forums : While there is no "official" LineageOS build for the Huawei Mediapad M5 Lite Custom Rom
Note: This process will wipe all data. Ensure you have a full backup before proceeding. Huawei Mediapad M5 Lite Custom Rom