bricked 4011

[wfuzatto]

I’ve a 4011 that shows the following message in console.
already tried netinstall with older 6.48 and newer 7.16 exe and npk.
in some firmwares it get freeze in jump to kernel code, others is keeps rebooting with kernel not found or corrupted ..

any suggestions?

[mkx]

Since netinstall seemingly successfully finishes its job, it seems as if flash disk on RB4011 started to fail. So you’d have to replace flash chip, potentially loosing ROS license. So before you do anything more radical than netinstall, I suggest you to contact Mikrotik support (e.g. via support@mikrotik.com) explaining all the circumstances (in detail) and wait for their response.

[patrikg]

I think you can even upgrade the RouterBoot from serial.
With g command in RouterBoot Menu, but you need the fwf file(RouterBoot Code)
TIP: And get all board info before you doing something, if you don’t have the license key in file or printed out.
I think I can see the key in your screenshots, so you may remove that picture from this forum or mask that part away in the picture, Don’t know if this is the whole key.
From : https://help.mikrotik.com/docs/display/ROS/RouterBOOT#RouterBOOT-Configuration

Allows upgrading RouterBOOT version through the network, or the XModem protocol

[wfuzatto]

i’ve tried to download a newer fwf version.. but i can’t find.. the newest avaiable for download is al2 3.44.
when the file is uploaded via xmodem, the error is version obsolete.. in the same option, if we upload a .bin file, the error is invalid id file..

al2_3.44.zip (44 KB)

[mkx]

RouterBoot version is at 6.48.6. It should be able to boot ROS version 6.48.x just fine (and quite likely ROS v7.y as well).

I still think that the flash storage chip may be failing.

[patrikg]

Here you go.. if that is the file you looking for and is correct for your hardware(boot code for arm32).
Dependencies:

• curl
• python3
• unsquashfs (maybe in package squashfs-tools)

This is of course in Linux command line:

mkdir firmware
cd firmware
curl -O https://download.mikrotik.com/routeros/7.16.1/routeros-7.16.1-arm.npk
python3 -m venv .
. ./bin/activate
pip3 install npkPy
npkpy --files routeros-7.16.1-arm.npk --export-squashfs --dst-folder .
deactivate
ls
bin      lib    npkPyExport_routeros-7.16.1-arm  routeros-7.16.1-arm.npk
include  lib64  pyvenv.cfg
cd npkPyExport_routeros-7.16.1-arm
ls
008_cnt_CntSquashFsImage.raw
unsquashfs 008_cnt_CntSquashFsImage.raw -ef etc/al2-7.16.1.fwf
cd squashfs-root/etc
ls
al2-7.16.1.fwf

[wfuzatto]

thank you for tutorial to retrieve fwf file, but i’ve found this easiest way in http://forum.mikrotik.com/t/failure-firmware-upgrade-with-netinstall-and-loading-kernel/159083/1 using 7 zip and navigating to folder etc.
unfortunaly still stuck in jumpint to kernel code.. like MKX said, maybe my flash is unoperable..

Something curious:
when I reboot it from power with backupbooter - routerboot return from 7.16.1 to 6.48.6

so.. last try, routerboot 7.16.1 and netinstall 7.16.1.. still jumping to kernel code..

support is sending some procedures, if any of them works. I will post here..
thanks for help.. at least we discover where to get fwf files easly.

[patrikg]

Maybe the next thing to do is to get into the RouterBoot and(don’t forget to take a copy of your licens key, so you have to enter it by hand from your screenshots):

e - format nand
r - reset the booter configuration

You getting…error…
rename: Read-only file system

When netinstall have you tick the options to reset the config ??

[wfuzatto]

Yes, i’ve tried everything in boot options.

Support says that is a nand issue. Unfortunally it is necessary send to rma.