Canon IXUS 85 IS / Powershot SD770 IS / IXY Digital 25 IS


CHDK is available for the SD770/IXUS85 with firmware version 1.00a from the Download page

20080312 loRes sd770is front

Powershot SD770 IS Front

20080312 loRes sd770is back

Powershot SD770 IS Back

Reviews: DCRP Review, DPReview, Steve's DigiCams, Imagin Resource,

Technical data[]

Image Processor: DIGIC III, iSAPS, 9-point AiAF
Image Sensor: 10 MP, 10.0 million effective pixels, 1/2.3-inch CCD type
OS: DryOS operating system
Lens: 3x optical zoom, F/2.8 - F/4.9 (35mm film equivalent: 35-105 mm)
Display: 2.5 inch TFT, 230,000 pixels
Storage: SD / SDHC / MMC
Power: NB-6L Lithium-ion rechargeable battery
Dimensions: 3.39 x 2.13 x 0.80 inches - 86.0 x 54.0 x 20.4 millimeters.
Release Date: March, 2008.
ISO: 80 to 1600

Version information[]

Created ver.req (responds to either ver.req or vers.req), then pressed FUNCSET and DISP simultaneously:

Canon PowerShot SD770 IS / DIGITAL IXUS 85 IS
P-ID:3175  NT D / PAL D

Firmware Ver GM1.00A
Jan 31 2008 13:20:56

Pressing DISP once again with FUNCSET still pressed:

Adj Ver.005.009

Pressing DISP a third again with FUNCSET still pressed (result varies depending on whether ver.req or vers.req is used):

IS Firm Ver. 2.04
IS Param Ver. 2.03

For Developers[]

Firmware dumps[]


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


  • Seems identical to ixus80_sd1100
// from FF8E99E4
#define LED_PWR    0xc02200d0
#define LED_PR     0xc02200d4
#define LED_ORANGE 0xc0220130
#define LED_GREEN  0xc0220134
#define LED_YELLOW 0xc0220138
#define LED_AF     0xc0223030