RB800 don't stop beeping

Hardware MikroTik hardware general
1

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

2

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

3

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

4

Then how did you change the firmware?

5

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

6

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

eth1’s LEDs doesn’t emit any light?

7

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 ?!