ProLiant BL620c G7 cannot boot from USB

[VTomi]

HI!

We have 4 newly installed BL620c servers in a C7000 enclosure which cannot boot from USB. We tried it from external I/O cable and we connected the USB in remote console too. Other I/O cable also didn't work. We would like to upgrade the firmwares of the servers.

Boot controller order and boot order is correct, USB is enabled in BIOS.

Servers ROM Version: I25 03/10/2011

ILO :

Type: iLO3

Firmware Version: 1.26 Aug 26 2011

OA version: 3.30

If you have experience in this issue  or  have any idea  please  don't  hesitate to share with us.

Thanks!

[Jimmy Vance]

Occasionally I'll have a server that doesn't want to boot from USB. I go into RBSU and "reset to factory default" This normally clears whatever the issue is.