Issue during upgrade from 7.13 to 7.15.1 on hAP ac lite

Hi to all,
something went wrong during the upgrade of the RouterOS.

After the autougrade, the router didn’t reboot for a long time, but at the end it rebooted.

The issue is that router never keeped alive again.
No LEDs ports blinking and Winbox doesn’t found the router.

Tried to reset by the reset button, but nothing changed.

Any suggestions?

Thanks in advance to who will respond.

do netinstall

Thanks.
I will try when I can.

Yes, hAP ac has a shortage of storage, you probably overfilled it.
Netinstall will fix that. After netinstall you can load the backup you made before doing the upgrade.