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  1. Below you can download the latest Global Circuit Technology (GCT) bios upgrade for your motherboard after signup with the eSupport BIOSAgentPlus service.
  2. You can identify your motherboard using the BIOS ID which is displayed on most computers at bootup. Per BIOS vendor (AMI, Award, Phoenix, ...) we have a seperate tab of motherboard BIOS Identifications.
  3. In the Website Links section we provide official and unofficial links to find free Global Circuit Technology (GCT) BIOS upgrades
Check For the Latest BIOS Updates

BIOSAgentPlus safely checks to see if a newer BIOS is available for your computer and provides instant access to your detailed BIOS and driver report.

Click on the Download arrow to download the requested Global Circuit Technology (GCT) bios update after signup with the eSupport BIOSAgentPlus service.

Global Circuit Technology (GCT) BIOS Updates

Manufacturer - Model Chipset BIOS ID Full BIOS ID Download BIOS
Global Circuit Technology (GCT) ALi 1541+1535 6A5KNG99 6A5KNG99C-00 Download BIOS
Global Circuit Technology (GCT) Intel 440BX/GX/ZX 2A69KG99 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9K Download BIOS
Global Circuit Technology (GCT) Cyrix GXi Cx5520 2A432G99 Download BIOS
Global Circuit Technology (GCT) Intel 440FX 2A69HG9B Download BIOS
Global Circuit Technology (GCT) Intel 430TX 2A59IG99 2A59IG99C-00 Download BIOS
Global Circuit Technology (GCT) Intel 430TX 2A59IG9C Download BIOS
Global Circuit Technology (GCT) VIA P4X266 6A6LWG99 6A6LWG99C-00 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G99 Download BIOS
Global Circuit Technology (GCT) Intel 815 Solano 6A69RG9B 6A69RG9BC-00 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9C Download BIOS
Global Circuit Technology (GCT) Intel 815 Solano 6A69RG9E 6A69RG9EC-00 Download BIOS
Global Circuit Technology (GCT) Intel 430VX 2A59GG9A Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9F Download BIOS
Global Circuit Technology (GCT) SiS 5582/5597/5598 2A5IIG99 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9I Download BIOS
Global Circuit Technology (GCT) ALi Aladdin V+ 6A5KMG99 Download BIOS
Global Circuit Technology (GCT) Intel 440FX 2A69HG9A Download BIOS
Global Circuit Technology (GCT) Cyrix MediaGX Cx5510 2A431G9A Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5520 2A433G9A Download BIOS
Global Circuit Technology (GCT) Intel 815 Solano 6A69RG9A 6A69RG9AC-00 Download BIOS
Global Circuit Technology (GCT) Intel 430TX 2A59IG9B Download BIOS
Global Circuit Technology (GCT) VIA KX133 (8371+686) 6A6LKG99 6A6LKG99C-00 Download BIOS
Global Circuit Technology (GCT) Intel 430VX 2A59GG99 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9B Download BIOS
Global Circuit Technology (GCT) Intel 815 Solano 6A69RG9D 6A69RG9DC-00 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9E Download BIOS
Global Circuit Technology (GCT) SiS 5571 2A5IHG99 08/01/97- SiS 5571-2A5IHG99C-00. Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9H Download BIOS
Global Circuit Technology (GCT) VIA 694X/694T 6A6LJG9B 6A6LJG9BC-00 Download BIOS
Global Circuit Technology (GCT) ALi Aladdin 7 M1561 6A5KPG99 Download BIOS
Global Circuit Technology (GCT) Intel 440FX 2A69HG99 Download BIOS
Global Circuit Technology (GCT) Intel 815 Solano 6A69RG99 6A69RG99C-00 Download BIOS
Global Circuit Technology (GCT) Intel 430TX 2A59IG9A Download BIOS
Global Circuit Technology (GCT) VIA KT266/KM266/KT333 6A6LVG99 6A6LVG99C-00 Download BIOS
Global Circuit Technology (GCT) Intel 430VX 2A59GG98 Download BIOS
Global Circuit Technology (GCT) VIA PRO266 (8633+8233) 6A6LUG99 6A6LUG99C-00 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9A Download BIOS
Global Circuit Technology (GCT) Intel 815 Solano 6A69RG9C 6A69RG9CC-00 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9D Download BIOS
Global Circuit Technology (GCT) Intel Whitney 810 6A69MG99 Download BIOS
Global Circuit Technology (GCT) Cyrix GXm Cx5530 2A434G9G Download BIOS
Global Circuit Technology (GCT) E VIA Apollo Pro Plus (692/ 2A6LGG92 12/13/2000-693-686A-2A6LGG9BC-00 Download BIOS
Global Circuit Technology (GCT) E VIA Apollo Pro Plus (692/ 2A6LGG9B 12/13/2000-693-686A-2A6LGG9BC-00 Download BIOS
Global Circuit Technology (GCT) MGXm Cyrix GXm Cx5520 2A433G99 04/02/19998-GXM-Cx5520-2A433G99C-00 Download BIOS
Global Circuit Technology (GCT) ST-693AVA VIA Apollo Pro Plus (692/ 2A6LGG9B 12/13/2000-693-686A-2A6LGG9BC-00 Download BIOS
Global Circuit Technology (GCT) ST-693AVA VIA Apollo Pro Plus (692/ 2A6LGG92 12/13/2000-693-686A-2A6LGG9BC-00 Download BIOS
Global Circuit Technology (GCT) ST-MGX Cyrix MediaGX Cx5510 2A431G99 09/23/1998-GX86-CX5510-2A431G99C-00 Download BIOS
Global Circuit Technology (GCT) ST-P3VFA VIA Apollo Pro Plus (692/ 2A6LGG99 02/22/2000-693-596-W977-2A6LGG99C-00 Download BIOS
Global Circuit Technology (GCT) TK-694XVAE-1 VIA 694X/694T 6A6LJG99 02/15/2001-694X-686B-6A6LJG99C Download BIOS

The below BIOSes are patched / modded to fix the 32GB or 64GB bug that is present in older Award BIOS Based BIOSes.

The 32GB bug in Award BIOS prevents many users from using HDD larger than 32GB as the BIOS hangs at detection. The 64GB bug manifests itself as a hang at the configuration table.

Click on the Download arrow to download the requested Global Circuit Technology (GCT) bios update.

Global Circuit Technology (GCT) Large HDD Support BIOS Updates

Manufacturer - Model BIOS ID OEM ID Max HDD size
Global Circuit Technology (GCT) GCT-6IV 08/08/97-i430VX-SMC665-2A59GG99C-00 GLOBAL CIRCUIT TECHNOLOGY INC. <GCT-6IV> 128GB BETA 128 GB Download BIOS
Global Circuit Technology (GCT) STB1030N (Websurfer) 11/04/1999-GXm-Cx5530-2A434H09C-00 WebSurfer Bios V0.9+floppy support 1999/02/23+64G HDD fix 64 GB Download BIOS

Award BIOS IDs are used to identify motherboards with an Award BIOS. For more information visit our Award BIOS ID information page.

At this moment we have 2 Award BIOS IDs listed for Global Circuit Technology (GCT). Contact us if you have new IDs missing from the list :-)

Global Circuit Technology (GCT) Award BIOS Identification

Award BIOS ID Motherboard manufacturer, model, PCB revision
09/23/1998-Gx86-Cx5510-2A431G99C-00 Global Circuit Technology (GCT) MGX 5510
06/29/1998-GXm-Cx5520-2A433G99C-00 Global Circuit Technology (GCT) MGXi 5520

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