Hardware Revisions

There are 7 Xbox revisions

1.0

• Made in Hungary
• USB controller is on a separate PCB
• GPU has a fan on the heat sink
• MCPX 1.0 ROM
• Thomson DVD Drive
• Seagate Hard Drive
• Conexant Video Encoder

1.1

Same as 1.0, except:

• Made in Hungary or Mexico
• USB controller moved onto the motherboard
• Fan removed from the GPU heat sink
• MCPX 1.1 ROM

1.2

Same as 1.1, except:

• Made in China
• Philips DVD Drive
• Western Digital Hard Drive

1.3

Same as 1.2, except:

• Samsung DVD Drive
• Seagate Hard Drive

1.4

Same as 1.3, except:

• Western Digital Hard Drive
• Focus video chip

1.5

Same as 1.4. Possibly never existed, but will otherwise be very rare. Production was halted and 1.4 was produced again.

1.6

Same as 1.4, except:

• Made in China or Taiwan
• BIOS no longer flashable
• Removed data and power lines from LPC port
• Xcalibur video chip
• Xyclops chip

Microsoft later switched to lower quality Hynix RAM. These Xboxes with non-Samsung RAM are sometimes referred to as 1.6b by the modding community.

Identifying

While not definitive, here are some ways to help identify the revision of your Xbox.

Manufacturing Details

Date Range	Revision	Location
01/2001-10/2002	1.0	Hungary
11/2002-04/2003	1.1	Hungary, Mexico
05/2003-03/2004	1.2	China
04/2004 Onward	1.6	China, Taiwan

Serial Number

The serial number looks like this:

LNNNNNN TWWFF

L is the production line NNNNNN is the number produced that week Y is the last digit of the production year WW is the number of the week FF is the factory code

Note, this table contradicts the previous table.

Factory	Location	Revision
02	Mexico	1.0 or 1.1
03	Hungary	1.0
05	China	1.2 or later
06	Taiwan	1.2 or later

Serial Number	Revision
LNNNNNN 20WFF	1.0
LNNNNNN 21WFF	1.0
LNNNNNN 23WFF	1.0 or 1.1
LNNNNNN 24WFF	1.1
LNNNNNN 25WFF	1.1
LNNNNNN 30WFF	1.2
LNNNNNN 31WFF	1.3
LNNNNNN 32WFF	1.3
LNNNNNN 33WFF	1.4 or 1.5
LNNNNNN 42WFF	1.6

Video Chip	Revision
Conexant	1.0, 1.1, 1.2, 1.3
Focus	1.4, 1.5
Xcalibur	1.6

BIOS Version

Kernel Version	Revision
3944, 4034, 4036, 4627	1.0
4817, 4972	1.1
5101, 5713	1.2 - 1.5
5838	1.6

References

• InformIT Methods of Identification
• InformIT Identifying your Xbox Revision