PowerShot SD800 IS / Digital IXUS 850 IS / IXY DIGITAL 900 IS[]

  • CHDK is available for the SD800 with firmware version 1.00B, 1.01A, 1.01B, and 1.01E see Downloads
  • The SD800 is based on a DIGIC III image processor but uses the DIGIC II PropertyCase!

Canon PowerShot SD800 IS

Reviews and Specifications[]

Technical Data[]

Canon Powershot SD800IS
Processor: DIGIC III processor
Sensor: 7.1 Megapixel CCD
Lens: 3.8X optical zoom lens, 28mm - 105mm (35mm equiv)
OIS: yes

Storage: SD / SDHC / MMC memory cards
Battery: Li

USB: 2.0
Misc: Face Detection technology

Version information[]

Create an empty file called ver.req in the root of the flash card. Switch on the Camera and change to review (pictures). Press and hold FUNCSET, then instantly press DISP. Please note that holding FUNCSET for too long (until clock appears) and then pressing DISP won't give the desired results. You should now see the following on your screen:

Canon PowerShot SD800 IS
P-ID:3136 NT
Firmware Ver GM1.00E
Oct 4 2006 10:07:45

Pressing DISP once again with FUNCSET still pressed:

Adj Ver.006.006
2007.07.08 14:16:13

Pressing DISP a third time with FUNCSET still pressed:

IS Firm Ver. 2.05
IS Param Ver. 2.04

For Developers[]

LED memory addresses[]

0xC02200C0 - AF-beam
0xC02200C4 - Blue
0xC02200C8 - Orange 
0xC02200CC - Green
0xC02200D0 - Yellow
0xC02200D8 - Power

Firmware Dump[]

A dump of the 1.00e Firmware is available for download.

Note that the PropertyCase settings for this camera are DIGIC II based, even though it is a DIGIC III camera (per quietschi)


Download location for firmware dumps:
P&S firmware dumps mirror

CHDK Beta Releases[]

SD800IS CHDK 0.2 beta (allbest 37/trunk 310)

Leave a feedback in the forum about the testing of this beta version:,445.0.html

Note about the different Firmwares[]

Cameras with the 1.00d firmware can/must use the CHDK version for 1.00e - the autobuild already just copies this, so when you have a 1.00d cam you will find YOUR version in the autobuild. Development is happening in the 1.00e tree, then compiled and just renamed for the 1.00d people.