Update Samsung Galaxy Xcover 4 SM-G390Y to Android 7.0 Nougat
How to Flash / Update Firmware Samsung Galaxy Xcover 4 SM-G390Y to Android 7.0 Nougat. if you get error message "SECURE CHECK FAIL: BOOTLOADER" when flashed the ROM, try to use the newest version of the firmware update.
Firmware download link and manual guide https://goo.gl/A4kJvm
Update Samsung Galaxy Xcover 4 SM-G390Y to Android 8.1.0 Oreo
This video is a guide how to update or flashing samsung firmware via ODIN manually. You can use new version of ODIN Software.
How to hard reset https://youtu.be/RsLr--QXnEk
This video used Samsung Galaxy J7 Pro 2017 as sample, the procedure is the same for other Samsung Galaxy phones and tablets. For Galaxy S8, S8+, S8 Active, Note8 or other galaxy device that does not have home key, you can press BIXBY key.
I hope you enjoy with this video and can solve your problem.. I know this video will get many comments, but remember I create this video only for helping you.