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Tomcat n3400B (S2925)
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TYAN makes no warranties to the usability of a BIOS on our website and are made available to the public on an "as-is" basis. Upgrading a BIOS without knowing the implications may cause serious adverse affects. Please do not upgrade a BIOS unless directed to do so by a qualified support technician. TYAN is not able to replace mis-used or damaged BIOS chips in the event of a BIOS flash failure. Please contact your dealer for replacements or warranty service.

Date Filename Version
2008/06/03 v.2.00

Problem Fix Description:


- Update AMD AGESA code to v3.1.8.0

- Updated support for the Realtek ALC262 Audio Chipset

- Updated the nVidia MAC PHY

- Added onboard NVIDIA LAN PXE ROM [Enable/disable] to bios setup

- Added new bios option to be able to change the PCI Bus Scan Order under "PCIPnP" configuration

- Fixed an issue where you couldn’t install RHEL3 without getting an ACPI error message "No IRQ known for interrupt pin x"

- Updated the NVIDIA RAID BIOS so you can properly select BBS devices in the boot menu

- Fixed an "AC Power Loss always ON" failure if the system is powered off by the power button while the system is going through POST

2007/10/19 S2925_v104 v1.04
TYAN Tomcat n3400B (S2925) BIOS V1.04
New features and Fixes :
* Fixed an issue where AMD PowerNOW! was not functioning correctly under Windows VISTA
* Fixed a memory size reporting error under a XEN enabled linux OS where memory size is
   larger than 4GB
* Added support for nVidia nTune software

2007/07/05 s2925_v103 v1.03
TYAN Tomcat n3400B (S2925) V1.03
New features and Fixes :
* Updated AMD CPU support
* Updated nVidia SATA RAID Option ROM to v9.85
* Added support for 1TB sized SATA HD's
* Fixed an issue where some SATA ATAPI devices would not function properly
* Fixed an issue where the system can not power on, if FAN full loading and using
   an "ETASIS Model: EFAP552" Power supply
* Fixed LAN1 Led blinking abnormally in the first boot, after AC power loss
* Fixed a SMDC remote function fail issue if the SMDC card becomes reset
* Fixed an issue where a PCI-E VGA card is not detected properly under Win2k

2006/12/27 s2925_102 v1.02

TYAN Tomcat n3400B (S2925) V1.02
New features and Fixes :
* Updated bios for SMDC support
* Added POST beep code for when memory is not present
* Set the HPET function to default [Enable]
* Fixed a keyboard fail issue
* Let KB/MS wakeup function control by OS

2006/11/06 s2925_101 v1.01

TYAN  Tomcat n3400B (S2925) V1.01
New features and Fixes :
* Set HT link frequency (CPU <-> MCP55) to 1000Mhz
* Added SMDC M3291 support.
* Added LAN2 S4/S5 wake up support
* Updated the PXE Option ROM to v5.37
* Fixed an issue wehre the PMU would not report properly and  cause the I/O to fail
* Fixed an issue where a PCIe display or SCSI add-on card will  cause the PXE Option ROM
   to not be executed during POST

2006/09/01 s2925_100 v1.00

TYAN Tomcat n3400B (S2925) V1.00
New features and Fixes :
* This is the first release BIOS.