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Recovering a corrupt XSCF on a SPARC Enterprise server
Published: 21-Jul-2026 - Last Updated: 21-Jul-2026
I recently recieved a Fujitsu SPARC Enterprise M4000 server, however, the XSCF failed to boot properly with the following error:
***** WARNING *****
XSCF initialization terminate,
because there is no XSCF-Firmware in this XSCF board.
Please install XSCF-Firmware.
*** SCF_INIT was set FACTORY mode automatically. ***
login: default
login: cannot run /scf/bin/bash: No such file or directory.
Without the XSCF, we cannot even turn on the server.
Thankfully, someone uploaded the firmware for the M4000/M5000 to archive.org:
https://archive.org/details/sun-xscf-firmware-ffxcp1124
I was given the M3000 XSCF firmware by someone and uploaded it to archive.org:
https://archive.org/details/ikxcp-1124.tar
The file name is FFXCP1124 for the M4000/M5000 and IKXCP1124 for the M3000. Its very important to use the correct file.
I fed the firmware to claude and asked it to find a recovery path, and it did!
That saved me a lot of time digging through the rootfs image to find the recovery mechanism.
The recovery process
The hint here in the output is *** SCF_INIT was set FACTORY mode automatically. ***. This gives us a path back in.
When in factory mode, the root user's login shell is changed from /bin/false to /bin/sh.
We can login as user root with password scfroot
(none) login: root
Password:
login[111]: root login on `console'
BusyBox v1.00 (2010.06.15-08:05+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.
XSCF>
Get the first interface's MAC address and connect it to your network:
XSCF> ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:E0:0C:00:00:FD
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Base address:0xe000
.......
Now, you need an FTP server setup with root permitted to login.
The FTP credentials are hard coded and cannot be changed.
The FTP username is root and the password is scfroot.
At least on debian with vsftp, you can permit root login by removing root from /etc/ftpusers and restarting the service.
You'll also need to change root's password.
I recommend testing on another computer that root successfully logs in.
Place the correct firmware file in the FTP directory (FFXCP1124.tar.gz or IKXCP1124.tar.gz) and run the following command on the XSCF:
/root/standalone_flashup interface_MAC my_ip gateway_ip subnet_mask ftp_server_ip /FTPpath/to/FFXCP1124.tar.gz
Example:
/root/standalone_flashup 00:E0:0C:00:00:FD 10.40.0.143 10.40.0.1 255.255.255.0 10.40.0.120 /nfs/drop/FFXCP1124.tar.gz
And thats it! The firmware will be replaced with the upladed version and the XSCF will reboot a few times.
From there, you can login with the username default and follow the prompts to get logged in.
/root/standalone_flashup is just a shell script, so if you're curious, you can extract it from the firmware packages linked above to find out more about how it works.