I got rb433 AH. It came with 3.10 OS version, I tried to update it to 3.22 and did it but after that I couldn’t access RB anymore. There are no two beeps after booting. Also tried to reset it wit ROS reset button but didn’t work. Any help?
Attach a console cable to it and set it to boot from ethernet. Then use netinstall to reinstall the ROS. It is advisable that you first download a fresh ROS mipsbe package from mikrotik site as the one you have might be corrupt.