Please help me unbrick my device!

[The_Zodiac]

was able to get it working on another pc thanks

 

[dzidexx]

You can't relock BL - there isn't the newest flashable stock rom. Read again thread you linked and find in OP this:
"...then follow the above commands, but the following commands in place of the "lock" commands in the list above:
fastboot oem fb_mode_set instead of fastboot oem lock begin
fastboot oem fb_mode_clear instead of fastboot oem lock
..."
You can flash: 24.49.18-8 and after it install ota update.