Inside the App, there is the folder Documents, inside you will find the files SQ.... and devices.... , open the zip that sq designer created and extract that, you will have packge.... and the devices.... , trade the name of the packge.... files by SQ.... the files inside the app and paste the inside the app. Open the app and you will see it runing the newest version of your desing. Also the files are all .xml so you can change little things easyer if you need it to.
All IOS Versions are ok.
Srry about my english.