CC3200SDK: What's the latest version Of CCS support cc3200?

Part Number: CC3200SDK
Other Parts Discussed in Thread: CC3200

Hello, TI experts

It seems that the latest SDK version of cc3200 is 1.5.0. Which CCS should I choose? The version of launchpad is v4.1. Thanks.

I also feel hard about IDE version when I use these old chips, As the web page always shows the latest version, but not fit for the old chip. Could you give me some advices?