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jrosetto
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Bricked RB1100AHX4

Thu Feb 08, 2024 10:09 pm

Have had a Mikrotik in our cabinet so long it is out of warranty and I am trying to bring it back to life.
Router powers on and all lights flash then no life on any ethernet port. Tried factory reset and netinstall to no avail.

Hooked a console cable up and here is the output
AL31400X-140


RouterBOOT booter 6.48.6

RB1100x4

CPU frequency: 1400 MHz
  Memory size: 1024 MiB
    NAND size: 128 MiB

Press any key within 2 seconds to enter setup..

loading kernel... OK
setting up elf image... OK
jumping to kernel code
Where can I get the BIOS file for this router to try a reflash over serial?
Any other suggestions?

Thanks for any input you can provide.
 
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patrikg
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Re: Bricked RB1100AHX4

Fri Feb 09, 2024 2:02 am

Yes you can, I think you need to look at this site.
https://help.mikrotik.com/docs/display/ROS/RouterBOOT
https://help.mikrotik.com/docs/display/ ... RouterBOOT
https://help.mikrotik.com/docs/display/ ... cense+keys

And be careful, so you don't loose your Licence Key, try to get it from the bootmenu.
And you can upgrade the RouterBOOT via xmodem with serial.
Havn't seen some way for flashing the RouterOS sadly via serial.

This is the Dude version for RouterBOOT, don't know if it the same for the old one.
And this is a very old version of the RouterBOOT.

https://i.mt.lv/cdn/rb_bootloaders/al2_3.35.5.fwf
 
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mkx
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Re: Bricked RB1100AHX4

Fri Feb 09, 2024 8:39 am

Hooked a console cable up and here is the output

Nothing after that?

It seems like routerboot is fine.

I'd check power supplies though. A few years ago MT had a batch of bad capacitors which bulged with time (and devices started to misbehave in most strange ways). This problem affected both power supplies as well as capacitors on boards.
 
jaclaz
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Re: Bricked RB1100AHX4

Fri Feb 09, 2024 10:49 am

That model can be powered through a DC input, with a rather wide range of allowed voltage, 12-57 V, besides POE.

So it should be easy to test it with *any* external power supply.

But it is IMHO improbable that both internal power supplies failed (at the same time, not being powered), even if it was in the cabinet for a long time, how long was it, a couple of years?
 
jrosetto
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Re: Bricked RB1100AHX4

Fri Feb 09, 2024 6:29 pm

Tried powering over POE with the same results.
Router has been sitting in the closet for a little over a year.

I tried flashing the fwf file but it said it was to old so I started researching more on how to find the fwf files.

I found that they put the fwf file in every RouterOS packages in the /etc directory and you can extract it with 7zip.

Flashed the 7.13.4 fwf file over serial and on the reboot it booted so not sure what happened but it was definitely RouterBOOT related.

Thanks for the suggestions guys it help me bring this 1100 back to life :D
 
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patrikg
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Re: Bricked RB1100AHX4

Fri Feb 09, 2024 11:03 pm

Now you can press this bar to mark your thread as solved.

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