I've bought a new CUSPTECH device to my car and this was a wrong choice due to terrible support.
As who have this device know it's NOT stabled and have a lot of bugs.
I sent an email to CUSPTECH's support for new version and they shared with me some folder with version for my car (CP-HY021 HYUNDAI I20).
From some reason they stop to answer to my email / Skype message and remove the link.
the last non-stable version in my car now is "4.4.2 c20140530 new radio app", but i know there is more new versions.
My suggestion for who have this device,lets share it.
I can share the last version i have but need some new version
by the way - look's like the version is compatible for all of CUSPTECH devices