Mikrotik hAP ac lite (RB952Ui-5ac2nD-TC-US) Dual-concurrent Access Point 802.11ac 5GHz wireless
MikroTik RB952Ui-5ac2nD (hAP ac lite)
https://arednmesh.readthedocs.io/en/latest/arednGettingStarted/installing_firmware.html#mikrotik-first-install-process
My RB952 has taken over 16 minutes to reboot after a firmware load.
Just because the lamps momentarily stop blinking after about 4 minutes, does not indicate that the install is finished.
The device may respond as though 'bricked' until the firmware install has finished.
I hope this helps,
MikroTik RB952Ui-5ac2nD (hAP ac lite)
https://openwrt.org/toh/mikrotik/rb952ui-5ac2nd_hap_ac_lite
AMAZON
https://www.amazon.ca/Mikrotik-RB952Ui-5ac2nD-TC-US-Dual-concurrent-802-11ac-wireless/dp/B07883D89B