acer chromebook 315 locked

[KABY]

hello every one
i have bought seconde hand chromebook i fund that its locked by administrator by serial number can someone help me with this
i tried rcunlocker nothing happend enrollment dev mod nothing CHANGED IN bios
when i change serial number laptop wont turn on ( i change only one number in bios bin not everythin)
can someone help me with it!!!!
the serial number is NXHKAEF006321039717600
ORIGINAL BIOS BIN

[peste]

hello every one
i have bought seconde hand chromebook i fund that its locked by administrator by serial number can someone help me with this
i tried rcunlocker nothing happend enrollment dev mod nothing CHANGED IN bios
when i change serial number laptop wont turn on ( i change only one number in bios bin not everythin)
can someone help me with it!!!!
the serial number is NXHKAEF006321039717600
ORIGINAL BIOS BIN

try..
https://www.badcaps.net/forum/showthread.php?t=119278

[KABY]

I will try it thank you
in the attachment says the device is locked to organization with serial number on it
This is why I tried to change serial but the machine not turning on

[KABY]

try..
https://www.badcaps.net/forum/showthread.php?t=119278

It's not working chromebook not turning on with this method

[KABY]

More information
the topic helped me
I have done everything at first and my laptop won't turn on
I have changed the serial number ,region snid and us RCUnlocker to unlock dev mode enrollments
the laptop turn on eventually
Maybe this method works on all locked chromebook
Have nice day