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Canon Powershot A1100 IS

The Powershot A1100 IS was released on February 17, 2009


CHDK is available as beta version for the Powershot A1100 with firmware 1.00C from the Download page.


The A1100 CHDK DOES NOT support manual loading via the "Firmware Update" method, read also CHDK specialities


Powershot A1100IS lineup

A1100is front

Powershot A1100IS Front

A1100is back

Powershot A1100IS Back

A1100is top

Powershot A1100 Top

Reviews and Specifications

Technical Data

  • Digic IV image processor
  • DryOS operating system
  • Sensor: 12.1 million effective pixels, 1/2.3 CCD (6.16 x 4.62 mm, 0.28 cm²), 43 MP/cm² Pixel Density
  • Max image size: 4000 x 3000
  • 4x optical zoom lens 35-140mm (35mm equiv), F2.7 - F5.6, Image stabilization
  • 2.5 inch LCD, 115,000 pixels
  • ISO 80-1600
  • Standard Definition Movie Recording: 640 x 480 (30 fps), 320 x 240 (30 fps)
  • Power: Two AA batteries
  • Weight (without batteries): 155 g (5.47 oz), Dimensions: 95.4 x 62.4 x 31.0mm (3.76 x 2.46 x 1.22 in)

Firmware info

The ver.req file is used to retrieve firmware information from the camera.

After holding down FUNCSET then press Timer:

Canon PowerShot A1100 IS
FirmWare Ver GM1.00A
Dec 8 2008 13:19:46

Subsequent press of Timer (while still holding FUNCSET) reveals:

Adj Ver.004.010

Another press of Timer (while still holding FUNCSET) brings up this:

IS Firm Ver. 2.11
IS Param Ver. 2.07

And another press of Timer (while still holding FUNCSET) brings up this:

Driver Info: 0x00000000

CHDK specialities

  • The A1100 does not support the manual loading method with "Firm. Update"; use the automatic loading from a CHDK-bootable & locked SD card instead.
    Read more here:

For Developers

LED addresses

#define LED_DP   0xC02200CC    // direct-print (blue)
#define LED_FLASH 0xC02200D8    // Triggers flash
#define LED_AF   0xC02200DC    // Auto-focus LED

Available firmware dumps

  • Firmware 1.00A (by Timich, dumped with CBasic udumper)
  • Firmware 1.00B (not available)
  • Firmware 1.00C (blinked out by dch24, pawitp did it again later)

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

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