true (May not apply to all OS Revisions. Please refer to 'General Notes')
General Notes:
The BIOS tty output at 9600 appears to corrupt the NIC ROMs which kills PXE booting.
To workaround the issue, set the MPCBL0050 server BIOS console baud rate to 115200 and change connecting terminal baud rate from 115200 to 9600 during Solaris boot