How to Flash / Update Firmware Samsung Galaxy Tab A SM-P555M to Android 7.1.1 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 [ Ссылка ]

This video is a guide how to update or flashing samsung firmware via ODIN manually. You can use new version of ODIN Software.

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How to hard reset [ Ссылка ]
Note:
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.

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