Press and hold the buttons simultaneously.
The Auto Patch did not stick. Re-flash the Auto Patch firmware. After it reboots, immediately disable automatic time updates and reboot to Download mode within 60 seconds.
If the device hangs on the logo, boot into Recovery Mode (Volume Up + Home + Power) and perform a Wipe Data/Factory Reset . j730f u8 auto patch firmware link
Release the keys when a blue or green warning screen appears.
Most U8 firmware versions for this model are based on Android 9.0 (Pie) . Download Resources Press and hold the buttons simultaneously
"Auto patch" is not an official Samsung term, but it is widely used in the firmware community. It generally refers to:
All of these belong to the . They are based on Android 9 (Pie) and One UI , and they include the latest security patches for that version. After it reboots, immediately disable automatic time updates
Go to Settings > About Phone > Software Information and tap Build Number seven times.