: These files are used to "patch" the device's certificate after an IMEI has been changed or repaired. Without this patch, the device often shows "Emergency Calls Only" or "No Service" even if the IMEI appears correct in settings.
If Odin shows a "Binary Check Fail" error, you are likely trying to flash a U1 file on a device that has been updated to a higher binary (e.g., U2 or U3). You cannot downgrade binaries. specific forum where you can download the verified U1 patch file? g610f u1 auto patch file