Huawei officially discontinued its bootloader unlock code service in 2018.
If the Y5 2019 is your primary phone, it is recommended to stay on the official HUAWEI Support Global firmware due to the high risk of losing cellular connectivity.
Mobile network connectivity (IMEI/SIM detection) is a common bug on GSI builds for this specific hardware. 2. Resurrection Remix custom rom for huawei y5 2019 top
Older versions based on Android 7.1.2 exist for previous Y5 models, but for the 2019 edition, you must rely on the Android 9-based GSI version. 3. AOSP (Android Open Source Project)
While there are no official builds, users have successfully booted LineageOS 16 (Android 9) and LineageOS 18.1 (Android 11) as GSIs. AOSP (Android Open Source Project) While there are
The Ultimate Guide to Custom ROMs for Huawei Y5 2019 (AMN-LX9)
Before you can install any custom ROM, you must unlock the bootloader. but for the 2019 edition
You must perform a "Wipe Data/Factory Reset" in TWRP before and after flashing to prevent boot loops. Comparison: Stock EMUI vs. Custom ROM Stock EMUI 9.1 Custom ROM (GSI) Android Version Up to Android 11 Bloatware Customization Limited Themes Full System Control Stability Experimental / Buggy SIM Connectivity Frequently Broken Important Warnings Warranty: Flashing a custom ROM will void your warranty .