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TYAN (S7055)
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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
2015/10/19 S7055_v301 V3.01


- Fix system hang 0xBC with two Ivy CPU while non-ECC DIMM insert
- Fixed Hang 0x79 while post after disable legacy/UEFI device then load optional default
- Update PXE Boot ROM to v2.3.11/v1.5.43
- Fix system hang 0xBC wiht two Ivy CPU while non-ECC DIMM insert
- Fixed Spring mode show N/A while setup menu
- Update Power Management Module
- Update Intel(R) Ivy Bridge Processor C-0, C-1, S-0, S-1, M-0, M-1 Stepping microcode to 416.
- Fixed Chassis intrusion works fail issue

2013/07/09 S7055_v300 V3.00


- Support IVY-Bridge CPU
- Update QPI and MRC Version to
- Updated Ivy Bridge -EX -EP -EN (306E4) C-0, C-1, S-0, S-1, M-0, M-1 to version 415
- Feature: PCIe Slot Link Speed Control
- Fixed ATI Graphic GEN2 card only runs GEN1 speed issue.
- Fixed When too many graphic cards insert on board, system will hangs at 0x36 issue.
- Fixed Nvidia VGA card won't display when enabled "Above 4G Decoding".

**Please note upgrade to Ivy Bridge-EP requires download below first:
- BIOS Upgrade Guide (pdf)
- BIOS Upgrade Tool:

2013/01/15 S7055_v201A V2.01A


- Fixed Nvidia VGA card won't display when enabled "Above 4G Decoding".

2013/01/14 S7055_v201 V2.01


- WORKAROUND - Issue: System hangs at black screen, when system plugs on 4 more PCIe VGA cards.

2012/11/28 S7055_v200 V2.00


- Update AMI Codebase to
- Windows Server 2012 supported.

2012/10/22 S7055_V100 v1.00


- S7055 BIOS initialized.
- VGA BIOS : 0.93.08
- LAN : v1.3.72
- SCU SAS : v3.0.1.2101