BECKHOFF CB4055 - Manual (Page 76)

Chapter: BIOS Settings BIOS update
page 76 Beckhoff New Automation Technology CB4055
5.8 BIOS update
If a BIOS update becomes necessary, the program “AFUDOS.EXE” from AMI® is used for this. It is
important, that the program is started from a DOS environment without a virtual memory manager such
as for example “EMM386.EXE”. In case such a memory manager is loaded, the program will stop with an
error message.
The system must not be interrupted during the flash process, otherwise the update is stopped and the
BIOS is destroyed afterwards.
The program should be started as follows:
afudos [romfile] /p /b /n
/p Program BIOS file
/b Program boot block
/n Program NVRAM
C AUTION
Updating the BIOS in an improper way can render the board unusable. Therefore, you should only update
the BIOS if you really need the changes/corrections which come with the new BIOS version.
C
AUTION
Before you proceed to update the BIOS you need to make absolutely sure that you have the right BIOS
file which was issued for the exact board and exact board revision that you wish to update. If you try to
update the BIOS using the wrong file the board will not start up again.