Please RB433

Hardware MikroTik hardware general
1 
Press any key within 2 seconds to enter setup..
Please, check ethernet cable...
Ethernet link absent...
trying bootp protocol....................................................................................... failed
kernel loading failed

and it works over Ether1

2 
RouterBOOT booter 2.23

RouterBoard 433

CPU frequency: 300 MHz
  Memory size:  64 MB

Press any key within 2 seconds to enter setup..
Please, check ethernet cable...

and it works over Ether2,3

3

try to upgrade the lastest firmware over serial..