Explain how to (like "Fail" or "Setup Connection") Locate reputable sources for the SM-J510G U2 firmware file
Check your current binary in Download Mode (look for "RP SWREV: B:2"). You cannot downgrade from U2 to U1. Explain how to (like "Fail" or "Setup Connection")
Sets the region/country configuration. (Use HOME_CSC to keep your data, or regular CSC to wipe it). 🚀 How to Enter Download Mode To flash any firmware, the device must be in Download Mode : Power off the phone completely. Press and hold Volume Down + Home + Power simultaneously. Explain how to (like "Fail" or "Setup Connection")