Do not just Google the file name. Most top results are fake download buttons or old Android 9 files. Use these three verified sources:
Official firmware files (Stock ROMs) for the MAR-LX3A are typically identified by regional codes like (Latin America) or Huawei Support: Check for official updates through the HUAWEI Support Global portal Third-Party Databases: Reputable archives such as HardReset.info host official stock firmware packages. 3. Installation Methods Method A: Manual SD Card/USB OTG Upgrade (Forced Update) Huawei P30 Lite Mar-lx3a Firmware Download
Updating the software on your Huawei P30 lite New Edition Android 9.0 | EE Do not just Google the file name