Without unlocking the bootloader, you cannot flash any Custom ROM.
Before diving into the technical modifications, it is essential to understand the hardware you are working with. The model number typically refers to a mid-range Huawei device featuring the HiSilicon Kirin 658 processor, 4GB of RAM, and 64GB of internal storage. When it launched, it ran on Android 7.0 (Nougat) with EMUI 5.1. huawei nmo-l31 custom rom
Huawei officially shut down its bootloader unlock code service in 2018. You cannot unlock the bootloader via official methods anymore. Without unlocking the bootloader, you cannot flash any
A: No. You must pay for DC-Unlocker. There is no free method for Huawei Kirin 620 devices. When it launched, it ran on Android 7
Factory firmware often comes with pre-installed bloatware—apps that run in the background and consume RAM. Custom ROMs like LineageOS or Pixel Experience are typically stripped down to the bare essentials. On the Kirin 658 chipset, shedding the weight of heavy skins can result in a noticeable speed boost and better RAM management.
This is the most stable and recommended "custom" experience. Developers have extracted the official firmware (C900B170, C432B160, etc.) and removed Huawei’s bloatware (HiCare, Huawei Mobile Services bloat, unused themes, and Chinese keyboard apps).
, is a classic mid-range device powered by the HiSilicon chipset . While it officially peaked with Android 7.0 (Nougat) and EMUI 5.0, a dedicated developer community has kept it alive through various custom ROMs.