Dears,
I am facing a critical problem on my RB800 where i am not able to access it via winbox nor via serial.
I think the firmware is deleted and i need to install a new one.
But the problem that i am not able to access the board using serial connection.
Note that the board reboots every 2 minutes.
Any advise ?
It didn’t give any output on serial? It should be, even it its damaged. Have you tried another serial cable?
I already used the same cable with another routerboard and it worked fine.
After firmware upgrade, i got the below
“file transfer failed: receive timeout
invalid upgrade file id”
Any advice ?
netinstall help?
if not then email to mikrotik support.
RB800 is a problematic production i have one of early verions.
It did not show its ram speed shows me unkown in routerboard settings, it was freezing time to time and i had to downclock without success it is still runing in 800Mhz ..
what RouterOS version you are using?
Janisk if you ask me i use latest version all the time and upgrading boot loader always.