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RouterBOOT reset button has three functions:
Hold this button during boot time until LED light starts flashing, release the button to reset RouterOS configuration (total 5 seconds)
Keep holding for 5 more seconds, LED turns solid, release now to turn on CAPs mode (total 10 seconds)
Or Keep holding the button for 5 more seconds until until LED turns off, then release it to make the RouterBOARD look for Netinstall servers (total 15 seconds)
без включенного бут прожекта форматирования не происходит