You are trying to update Karbonn K9 firmware flash file from this page and you can easily get it from a source provided link URL below. This is the free version and it will make your device security more strong as you expect from it.

The software update has to apply on your device because of security updates. It will not upgrade only the features by it will also help you to improve your security updates as well. This is the best and perfect thinking to apply an update on your Karbonn K9 firmware. Must needed files flash files of Karbonn K9 is given at the bottom of this page to get for your device.

Install the latest firmware and update your OS of Karbonn K9 by a flash tool. It’s free and easy to use. Apply the firmware on your device by connecting your phone to the Windows (flash tool) and install it.

• Download the updated firmware.
• Launch the flash tool.
• Connect your phone.
• Use the compatible working USB data cable.
• Install the firmware.