From CHDK Wiki

Contents 1 Version information 2 LED memory addresses: 3 Firmware Dump 4 CHDK Releases

[edit] Version information

Created ver.req, then pressed FUNCSET and DISP simultaneously:

Canon PowerShow SD800 IS
P-ID:3136 NT
Firmware Ver GM1.00E
E18
Oct 4 2006 10:07:45

Pressing DISP once again with FUNCSET still pressed:

Adj Ver.006.006
ZoomLensError
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

[edit] LED memory addresses:

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

[edit] 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)

[edit] CHDK Releases

SD800IS Chdk 0.2 beta (allbest 37/trunk 310)

Leave a feedback in the forum about the testing of this beta version: http://chdk.setepontos.com/index.php/topic,445.0.html