nRiTeCh
Oracle
Modded BIOS for BIOSTAR Motherboards supporting socket AM2/AM3
I'm posting here BIOSTAR motherboards modded bios download lists which can unlock the 4th core on AMD 720BE Processor but ONLY IF THE PROCESSOR CARRIES ONE in reality.
Newly released processors (esp. releases after June 2009) have factory-disabled their 4th cores.
Still you can try for the new as well as for old proccys and post the stories here.
P.S:-You can try this BIOS to unlock other Phenom AMD BE processors too.
..: : Try at your OWN RISK : :..
TA790GX XE
4shared.com - online file sharing and storage - download TA790GX_XE.rar
TA790GXBE(R1)
4shared.com - online file sharing and storage - download TA790GXBE(R1).rar
TA790GXE(R1)
4shared.com - online file sharing and storage - download TA790GXE_(R1).rar
TA790GXE_128M(R1)
4shared.com - online file sharing and storage - download TA790GXE_128M_(R1).rar
TA790GX 128M
4shared.com - online file sharing and storage - download TA790GX_128M_.rar
TA790GXB A2
4shared.com - online file sharing and storage - download TA790GXB__A2+.rar
TA790GX A3+(R1)
4shared.com - online file sharing and storage - download TA790GX_A3+_(R1).rar
TA790GX A3+
Works with settings:
HT link @ 1.6GHz
ACC @ all cores
Value(all cores) @ -2%
4shared.com - online file sharing and storage - download 78DAA616.rar
Some newly modded bios:
TA790GXBE
4shared.com - online file sharing and storage - download TA790GXBE.rar
TA790GXE
4shared.com - online file sharing and storage - download TA790GXE.rar
TA790GXE 128m
4shared.com - online file sharing and storage - download TA790GXE_128M.rar
TA790XE
4shared.com - online file sharing and storage - download TA790XE_.rar
##IMP:-First run Tseries BIOS Update tool and backup the old bios. Save it on your pendrive root and rename it to "AMIBOOT.ROM".
Now download your respective bios mentioned above as per your board model and then extract the rar/zip file. The file extensions may be a .CET, .BST, or .ROM. Copy it in your pen drive.
Procedure:
Insert pendrive into USB port and turn on computer.
Keep pressing F12 key until the boot menu arrives. Then select your pen drive and then select the new file you downloaded to be flashed.
Rest further steps are all self-explanatory.
Then it asks for restart in end if successful. Thats it!!
Enjoy...:hap2:
In case if you ruin your mobo/bios, simply insert that pen drive back in usb slot and power on the pc, cmos will search the drive for the "AMIBOOT.ROM" file and re-flash it to its default bios.

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Info compiled from XtremeSystems Forums.