This helpful step by step guide will teach you how to:

Prepare your Galaxy device for the factory reset operation. How to save your phone’s data (Contacts, SMS, Photos, Videos,… Etc). The most critical accounts information you want to keep before formatting your device.Factory Reset (Hard Reset) the Samsung Galaxy Express Prime 3 SM-J337A from AT&T USA (Tow methods).Put your Galaxy phone into Samsung Recovery Mode.Wipe the cache partition on the Samsung Galaxy Express Prime 3.Soft reset your Galaxy Express Prime 3.

By reading this guide, You will learn How To:

Update your Samsung Galaxy Express Prime 3 SM-J337A from AT&T USA via FOTA, Samsung Smart Switch software, And manually using the Samsung Odin flasher.How and Where to Download Samsung Firmware Files.Prepare your Galaxy device for the software update.Select the 4 firmware files in Samsung Odin flash tool.Use Samsung Odin flasher.Put your Galaxy device into Download Mode (Also known as Samsung Odin Mode).Install the latest software (Firmware) update on your Galaxy device.