How to check Veriton series on desktop to update bios?

[filterkapi]

Hello,
I need to update bios on my Acer Veriton desktop. But I don't know the veriton series number and it is not written anywhere on the desktop. There is a serial number but acer website does not recognise it.
The system came with:
G41t-ad motherboard
Pentium dual core processor
1 GB Ram
250 W power supply
320 GB hard disk

The closest that I could find to this config is M261 veriton but it is not exactly this.
Please help me find the bios update for my system or my veriton series number.
I have checked on my system and packing it came with and I could not find Veriton series number.

 

[filterkapi]

BIOS Type:AMI
BIOS Date:April 28th, 2010
BIOS ID:64-0100-009999-00101111-042810-Eaglelake
BIOS OEM:BIOS Version: P01-A4 S0 Release Date: 04/28/201 - P01-A4
Chipset:Intel 2E30 rev 3
SuperIO:Unknown
Make/Model:ACER Veriton Series



This is some more information I found form BioAgentPlus software regarding the bios.