Thunder i7505 (S2665) BIOS

  Current BIOS Revisions

For new BIOS versions (v1.05 or above)


Boot Disk - Refers to either a Windows 95 or Windows 98 boot disk. Any other type of boot disk might load memory resident programs which will interfer with the flash process. Make sure you hit the F5 key when the boot disk first starts running to make sure no other programs are loaded in the back ground without your knowledge.

Bios Flash Package -  Unzip the entire bios package to a seperate clean floppy.  Insure there are 3 files that are unpacked during the unzip process


Two separate diskettes are needed. The first diskette is the Windows 95/98 Boot Disk. The second diskette should contain the 3 files needed to flash the bios.  These files are provided when you unzip the bios flash package from the website.


At the A: prompt simply type in "
flash" and the rest will be handled by the files included in your download.

For previous BIOS versions (below v1.05)

1. download and unzip files into a floppy boot disk
2. run the batch file and follow through the directions

* Special note: After flashing the BIOS, we recommend following two options:

option 1. shut down the system, clear the CMOS
option 2. press F2, and load the BIOS default setting.

This is to prevent the previous CMOS from causing possible issues.






TYAN  THUNDER i7505 (S2665) BIOS V1.16
New features and Fixes :
* Added boot from USB function*
* Fixed the inability to boot to LAN
* Fixed a problem that would report a SCSI Mass Storage
* error upon POST

* Note:  Due to the limited size availabe in the BIOS, Hardware Monitoring has been removed in this bios version to allow for USB boot functionality.



TYAN  THUNDER i7505 (S2665) BIOS V1.14
New features and Fixes :
* Added Intel Xeon 3.2GHz 2MB L3 cache CPU support

* please see the special note above



TYAN  THUNDER i7505 (S2665) BIOS V1.13
New features and Fixes :
* Updated CPU Micro Coding
* Added Xeon 1MB L3 Cache CPU support
* Fixes slow memory count at POST
* Fixes video card (512MB of memory) display issue
* Halt on Keyboard disabled

* please see the special note above



TYAN  THUNDER i7505 (S2665) BIOS V1.11A
New features and Fixes :
* Set full speed for all fan-connectors all the time
* BIOS with Hyper-Threading Tech. en/disable display
* H/W monitor reading display update

* please see the special note above



TYAN  THUNDER i7505 (S2665) BIOS V1.08
New features and Fixes :
* Clear CMOS fixed
* Pass Microsoft WHQL BIOS code base
* Memory display can show > 3.5G



TYAN  THUNDER i7505 (S2665) BIOS V1.05
New features and Fixes :
* Set all ADM controlled fan to full speed
* Fix Power LED
* Add BIOS display banner into post



TYAN THUNDER i7505 (S2665)  BIOS V1.00
This is the first BIOS release



Get the latest flash utilities here: Flash Utility

Information published on is subject to change without notice.
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