What is the or EMUI version of your device?
Go to Settings > About Phone . Check that the model explicitly reads MAR-LX3A . Do not attempt to flash MAR-LX1 or MAR-LX2 firmware onto this variant. huawei p30 lite marlx3a firmware download upd
If you need recovery firmware (e.g., after bricking, bootloop, or downgrade), use trusted sources: What is the or EMUI version of your device
If the dload method fails or your phone is completely bricked, you may need a PC-based tool. These tools are more complex and typically used by service centers. huawei p30 lite marlx3a firmware download upd