How to download SIAX:
How can I get and install Siax for my iPhone (7 days trial version)?
First of all you need Cydia in your Iphone and the Firmware 2.0 or higher
Tap "Cydia" to start it.
Tap the "Search" button
Search for: Siax
Tap "Siax" from BigBoss & Planet-iPhones (Utility)
Tap the "Install" button
And finally tap the "Confirm" button