MikroTik

So, RB800 stay beeping for a while when he power up. He made first beep ok and when he should beep twice and finish booting, he stays on beeping (pretty fast beeping) for a minut and reboot himself. After reboot, it's same thing again.
Connected to serial port , I got this in console:

_________________________
RouterBOOT booter 2.27

RouterBoard 800

CPU frequency: 800 MHz
Memory size: 256 MB

Press any key within 2 seconds to enter setup..
loading kernel from nand.... OK
setting up elf image... OK
jumping to kernel code
Starting...
Starting services
_______________________

Everything seems ok but can't get board (ROS) in winbox (over IP), mac telnet is also dead
Only Eth3 working and because of that I can't use bootp
Tried to change firmware over serial port from 2.27 fo 2.24 and reverse, do hardware reset, nothing help.

Any ideas for solving this problem ?
Thanks

Did you try format flash and reinstall ROS with netinstall from windows?

I can't because eth1 is broken and it's impossible do netinstall over other 2 ethernet ports...

I can't because eth1 is broken and it's impossible do netinstall over other 2 ethernet ports...

Then how did you change the firmware?

It's only file you can upload to the router via serial port - *.fwf but can't use it for reinstall ROS

It's only file you can upload to the router via serial port - *.fwf but can't use it for reinstall ROS

Ok, so it was uploaded through the serial line, not TFTP.

eth1's LEDs doesn't emit any light?

Nothing at all, i tryed to change speed settings (10/100/1000, FD/HD) on eth interface on PC, still nothing
Is there any chance to boot up RB800 via CF card with instaled ROS (for powerpc) on it ? And how to install ROS which is not for x86 on CF anyway ?!