spassk1976, how much detailed instructions?
In short, then:
How to block the bootloader 1. Install the ADB on your computer and the driver (there is a cap).
2. Remove the Root (if any), restore rekaveri (not stock), etc. In other words, return the phone to the fully
stock condition .
3. Boot to the bootloader command adb reboot bootloader or the volume down and power when the phone is switched on.
4. When you see the inscription Dowload mode lock the bootloader command fastboot oem lock. I do not remember, but I think after this command occurs reset the phone to factory settings.
Only if that is not so, as they say, I'm not guilty. And if something goes wrong, it can be butlup or brick.
If there Magisk, rekaveri TWRP and HRosed that I did not delete before locking, after the command fastboot oem lock turned brick, in which nothing but the bootloader is not loaded and the command fastboot boot, fastboot flash are not met, fastboot reboot recovery goes butlup, recovery through OST also does not work in this state.
recovery option after the phone locks the bootloader
Post has been editedcrick - 10.02.19, 23:20Reason for editing: Due to the fact that the post has been added to the cap, added to it a title