i can't reset my rb951 use reset button

i forgot my password
so i try to reset it with reset button
but it does not work
what can i do

You can use a jumper on the board itself

.
This image is only an example

If you still can’t reset your device using information from our WiKi: https://wiki.mikrotik.com/wiki/Manual:Reset
Please try to Netinstall the device: https://wiki.mikrotik.com/wiki/Manual:Netinstall

maybe Protected bootloader,
what can i do

it does not work
i have try many ways,still can’t reset

maybe Protected bootloader,