The Powershot SX220HS is the successor to the SX210 IS.


CHDK is available for the SX220 with the firmware versions 1.00A, 1.01A, 1.01B, 1.01C and 1.01E from the Download page


Technical Data[]

  • Digic IV image processor
  • DryOS operating system
  • 12.1 megapixels, 1/2.3" back-illuminated CMOS sensor
  • 14x optical zoom lens
  • lens: 28-392mm (35mm equiv), F/3.1 - F/5.9
  • Image stabilization (lens shift-type), "Dynamic IS" in movie mode
  • Display: 3.0 inch TFT, 461,000 pixels
  • Video: 1920x1080 @24 fps HD, 1280x720 @30 fps HD, 640x480 @30 fps, 320x240 @30 fps
  • Super Slow Motion movie mode: 320x240 @120/240 fps
  • Miniature effect mode: 1280x720 @6 fps
  • Movie format: Quicktime (MOV / H.264), linear PCM stereo
  • HDMI A/V out connector
  • Storage: SD, SDHC, SDXC, MMC, MMCplus, HC MMCplus
  • Power: Li-ion battery NB-5L
  • Weight (including battery): 215g, Dimensions: 106 x 59 x 33 mm
  • Announced: Feb 7, 2011

Firmware info[]

Canon PowerShot SX220 HS

Firmware version: GM1.01A
Adj Ver: 010.010
(other data not known)

Firmware Ver GM1.01B (
Adj Ver.010.010
Build: Jun 8 2011  11:11:48
Mecha Firm Ver. 3.00
MechaDSP Firm Ver. 0.00

Firmware Ver GM1.01E (
Adj Ver.010.010
Build: Dec 20 2011  11:19:27
Mecha Firm Ver. 3.01
MechaDSP Firm Ver. 0.00

The firmware version on your camera can be checked with CameraVersion.

Manually - just create empty file ver.req on SD card

Power on in PLAY mode with ver.req file on SD card, press and hold FUNCSET, press DISP. reveals the firmware version:

Canon PowerShot SX220 HS

Firmware Ver GM1.01E (
Adj Ver.010.010
Serial No. serialnumber

subsequent press of DISP. (while still holding FUNCSET) reveals:

Canon PowerShot SX220 HS

Build: Dec 20 2011  11:19:27

subsequent press of DISP. (while still holding FUNCSET) reveals:

Canon PowerShot SX220 HS

Mecha Firm Ver. 3.01
MechaDSP Firm Ver. 0.00

You can create also empty file vers.req on SD card which shows you additional info.

CHDK Specialties[]

This section describes special CHDK-related things...

  • access <ALT> mode by pressing PLAYBACK button.
    • short press <ALT> mode, long press original playback mode
  • to start directly in Record mode, hold down the Power ON/OFF button ~ 1-2 seconds
  • no dual partitioning required, the camera supports booting from FAT32(4GB+) formatted SD cards.
  • For 4GB+ SD cards follow this steps:
    • format the SD card from the original camera options menu
    • copy DISKBOOT.BIN, PS.FI2 and the CHDK folder on SD card
    • start the camera by holding the PLAYBACKbutton for ~ 1-2 seconds
    • select Firm Update...-> OK
    • go into <ALT> mode -> Menu -> Miscellaneous stuff -> Make card bootable...
    • lock the SD card to boot directly into CHDK

For Developers[]

General info:[]

  • DryOS v2.3, release #0047
  • FW start address: 0xFF000000

LED addresses[]

Scripting SX220 HS, 28-392mm lens, in uBasic.[]

The lens has 125 steps, each step is directly accessible with the ubasic command set_zoom x (where x is anything from 0 to 125). (392-28)/125 = a factor of 2.912 for each step, plus a static 28mm start at step 0, to get it's FullFrame eqv. focal length. Follow a set_zoom x with a sleep xxxx, to minimize vibrations before taking a picture, or just make simple zoom_50mm, zoom_100mm, etc.. scripts for your camera.
A simple script to reveal your camera's static values:
@title Show Variables
@param a = Aperture (Av)
@default a 0
@param b = Exposure (Tv)
@default b 0
@param c = Iso
@default c 0
@param d = Focus (distance)
@default d 0
@param e = Zoom
@default e 0


get_av96 a
get_tv96 b
get_iso c
get_focus d
get_zoom e
print "Av",a,"Tv",b
print "ISO",c,"Focus",d
print "Zoom",e
Now you can get the camera ->Back to the same 'position' as before you had to change the battery, or the camera entered sleep mode; and closed the lens. All you have to do is: know your settings!

Available firmware dumps[]


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

Porting process & links[]