Hi all.
on Friday 12 nov 2021 , TWO routers Groove 52HPn were updated long term firmware and after that they are cyclically rebooted.
The reset button does not solve the problem.
Attempts to switch to the firmware download mode over the netinstall also have no result.
Presumably the new firmware was version 6.48.5.
At the end of the supposed boot cycle, a barely audible click of the system speaker is heard.
Video of attempts to download and reset the device can be viewed at the link https://youtu.be/xeHibH4PJQU
What can be the solution to this problem ?
ps.
I have been systematically working with RouterOS and Mikrotik hardware for about 12 years with a large fleet of equipment of the same name.
I have experience downloading firmware using the netinstall.