: Contact the seller through the platform where you purchased the unit (e.g., AliExpress, Amazon). Vendors like Silverstrong often provide firmware links directly via private messages or cloud storage links ( Dropbox / Google Drive ) .
Manual update process: If the official update isn't available, maybe the user can flash an update manually via recovery mode or using ADB tools. This step would require more technical knowledge, so I should explain it clearly with warnings about risks like bricking the device. zq8003 android update link