L009 boot up problem

Hi,

I got same problem with RB941-2nD, RoS 7.15.2, did not upgrade bootloader.

routerboard: yes
board-name: hAP lite
model: RB941-2nD
revision: r3
serial-number:
firmware-type: qca9531L
factory-firmware: 6.49.10
current-firmware: 6.49.10
upgrade-firmware: 7.15.2

Sheduled reboot at 4AM and 3 devices hungs, all led on ports working “as normal” and I was unable to access router on any port.
Cutting power solved problem.

Did You got any answer?