Go to Settings > System > About Phone and check your current build number (e.g., MAR-LX3A 10.0.0.248 (C69E7R1P3) ) to find the exact matching firmware. How to Download MAR-LX3A Stock Firmware Firmware for the can be found in several places:
| OS Version | EMUI | Kernel | Security Patch (final) | |------------|------|--------|------------------------| | 9.0 | 9.1 | 4.14.116 | August 2020 | | 10 | 10.0 | 4.14.116 | January 2022 | firmware huawei p30 lite mar-lx3a
For major version jumps (e.g., EMUI 10 to 12), use HiSuite: Go to Settings > System > About Phone