Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits. Anti-spam check. Do not fill this in!====Q. Does using the CHDK program void your warranty?==== '''A.''' First, please bear in mind that '''CHDK comes with no warranty for any use; you use it at your own risk'''. What follows is just a few thoughts, and is not a legal opinion. Many believe that using the CHDK does not harm your warranty, since it is said to be loaded into the memory only temporarily (turn off the cam and it's gone completely) and that it leaves the original camera firmware untouched.<br /> Canon Tech Support [http://forums.dpreview.com/forums/read.asp?forum=1010&message=23175905 says]: ''"Unfortunately, any upgrades to the software of the camera not performed by an authorized Canon Repair Facility, would void the warranty."'' ... [http://forums.dpreview.com/forums/readflat.asp?forum=1010&thread=23168653&page=2 and] ... In further discussion with Canon about this specific hack, their response is: ''"If it is not Canon '''firmware''' the warranty would be void."''<br /><br /> Is it an "upgrade" of the camera firmware when the firmware remains untouched? It's up to you to decide. Don't use it if you are not willing to take the slightest chance. Many many people have used CHDK on their cameras (including some very experimental versions) and there is no report of any permanent malfunction. Thus, CHDK appears to be quite safe to use as long as you make sure that it's the CHDK and not a real firmware update (A real firmware update which is not an official Canon update could alter or completely screw up the camera and will void the warranty). Addressing their second comment (i.e. "if it is not Canon firmware"): CHDK is '''NOT''' firmware. By very definition, FIRMware is software that remains in the memory of the device when it is not using any power-source. However, this is not a legal opinion and the user accepts all risk of using it. And as a practical matter, if you send your camera in for warranty service, and Canon says your warranty is void because they found evidence of CHDK on your memory card, there is not much you can really do (what are you going to do? Spend thousands of dollars suing them to get your camera repaired?) However, you can just wipe or remove the card. ;) '''NOTE''' Under some circumstances, a memory card is not be needed to determine that CHDK has been run on the camera. The canon firmware writes a log to internal flash when a crash is detected, and this could contain signs of CHDK. ---- > This is to report that I had to send in my A710 IS for repairs when the play/capture switch stopped functioning reliably. I had used the CHDK but did remove the SD card before posting it. The letter I received along with the camera indicates that some parts were replaced, i.e. it was a hardware defect. The camera was under full warranty and I did not have to pay for the repairs. This dates back around March 2007. ---- >One guy asked the warranty question to Canon support through email: <pre>Hello, Will CHDK violate the warranty of my Powershot A720? CHDK is a kind of software program on a SD card and gets loaded into the camera's memory upon bootup. It provides additional functionality beyond that currently provided by the native camera firmware, it provides for example an "always on" full range Battery indicator. So does this CHDK software violate the warranty of my camera? Thank you for answering my question. Sincerely, Cet Senol</pre> And got the reply: <pre>Dear Cet Senol: Thank you for your reply. After researching this software on the internet it appears that CHDK doesn't make any actual changes to your camera. If you delete the CHDK software from your memory card, or if you choose not to activate the CHDK software on the card (or remove and replace the batteries), then the camera will behave absolutely normally - nothing has been (or ever is) changed, so the warranty is not affected. We hope this information is helpful to you. Please let us know if we can be of any further assistance with your A720 IS camera. Thank you for choosing Canon. Sincerely, Joann Technical Support Representative</pre> ---- please note - under most countries' laws, service agents cannot refuse warranty work unless they can prove that your actions outside the warranty contract have caused the malfunction. Summary: Please note that all contributions to the CHDK Wiki are considered to be released under the CC-BY-SA Cancel Editing help (opens in new window) Retrieved from "https://chdk.fandom.com/wiki/FAQ"