No. Flashing requires SP Flash Tool or OPPO’s proprietary Realme/OPPO Flash Tool, both of which need a Windows PC.
Allows users to manually update to a newer version or revert to an older, more stable version. oppo a57t flash file
Are you flashing this to fix a specific error like "MDM Lock" or a "Constant Restart" issue? oppo a57t flash file
Resolves issues where the device gets stuck on the Oppo logo during startup. oppo a57t flash file