I got an xbox off of ebay. It cam pre-modded with EvoxD6Blue bios and a chameleon mod chip (dont know which one though) and Evox dash 1.8.something,

I upgraded the dash to Unleash and the newest Evox as a secondary. .. what I want to know is

Can I flash a different bios on the chip using the new Evox dash ?

You can flash the chameleon with evox, but you need to edit your evox ini file to contain this entry..
[Menu]
Section "Root"
{
Section "System Utils"
{
Item "Settings",ID_Settings
Item "Flash BIOS",ID_Flash_Bios
Item "Backup",ID_Backup
Section "Chameleon Mode 1",ID_Chameleon_Mode_1
{
Line "Mode 1 (4x256k)"
Item "Switch To TSOP (Disable Chameleon)",ID_Chameleon_Release_D0,ID_Full_Reboot
Item "Switch To Bank 0",ID_Chameleon_Bank_0,ID_Full_Reboot
Item "Switch To Bank 1",ID_Chameleon_Bank_1,ID_Full_Reboot
Item "Switch To Bank 2",ID_Chameleon_Bank_2,ID_Full_Reboot
Item "Switch To Bank 3",ID_Chameleon_Bank_3,ID_Full_Reboot
Line "-=*-*=-"
Item "Flash Bank 0",ID_Chameleon_Bank_0,ID_Flash_Bios
Item "Flash Bank 1",ID_Chameleon_Bank_1,ID_Flash_Bios
Item "Flash Bank 2",ID_Chameleon_Bank_2,ID_Flash_Bios
Item "Flash Bank 3",ID_Chameleon_Bank_3,ID_Flash_Bios
}
Section "Chameleon Mode 2",ID_Chameleon_Mode_2
{
Line "Mode 2 (2x512k)"
Item "Switch To TSOP (Disable Chameleon)",ID_Chameleon_Release_D0,ID_Full_Reboot
Item "Switch To Bank 0,1",ID_Chameleon_Bank_0,ID_Full_Reboot
Item "Switch To Bank 2,3",ID_Chameleon_Bank_2,ID_Full_Reboot
Line "-=*-*=-"
Item "Flash Bank 0,1",ID_Chameleon_Bank_0,ID_Flash_Bios
Item "Flash Bank 2,3",ID_Chameleon_Bank_2,ID_Flash_Bios
}
Section "Chameleon Mode 3",ID_Chameleon_Mode_3
{
Line "Mode 3 (1x1024k)"
Item "Switch To TSOP (Disable Chameleon)",ID_Chameleon_Release_D0,ID_Full_Reboot
Line "-=*-*=-"
Item "Flash Bank 0,1,2,3",ID_Chameleon_Bank_0,ID_Flash_Bios
}
Section "Chameleon Mode 4",ID_Chameleon_Mode_4
{
Line "Mode 4 (2x256k + 1x512k)"
Item "Switch To TSOP (Disable Chameleon)",ID_Chameleon_Release_D0,ID_Full_Reboot
Item "Switch To Bank 0",ID_Chameleon_Bank_0,ID_Full_Reboot
Item "Switch To Bank 2",ID_Chameleon_Bank_2,ID_Full_Reboot
Line "-=*-*=-"
Item "Flash Bank 0",ID_Chameleon_Bank_0,ID_Flash_Bios
Item "Flash Bank 2",ID_Chameleon_Bank_2,ID_Flash_Bios
}
}
}