How to download and how to develop with Flex SDK 2?

Answer: download «Flex SDK 2» from www.adobe.com/support/flex/ts/documents/flex2_hf2/flex_sdk_2_Hotfix3.zip and develop using "Flex Builder 3". Flex SDK 2 is also included in «Flex Builder 3».

Some time ago I faced the strange challenge:
I had to make some improvements in customer's legacy code which was developed using obsolete Flex SDK 2. I started searching link to download that SDK in the Internet and it was the real problem to do it from my Windows workstation or notebook. All links was broken or, at the final stage, redirected me to the try & buy page of the recent Adobe Flash Builder 4.7. E.g. labs.adobe.com/technologies/flex/sdk/flex2sdk.html

The only indiret way to acquire it was — to download obsolete «Flex Builder 3 Plugin» for Eclipse and to install it on obsolete version of Eclipse (no later than 3.4 is acceptable ;-)
And after that, thank heaven, I was able to grab Flex SDK 2 from that installation. Actually «Flex Builder 3» is the latest IDE from Adobe which support developing using Flex SDK 2.

But today I've hound the easier way to do it. I have direct link! That link was obtained using link I've noticed above — in case you try to open it on Apple computer — Adobe do not redirect you to modern Flash Builder 4.7 «try&buy» page — but just allows you to get exactly what you want: Flex SDK 2 :-) Thank you Stas.
www.adobe.com/support/flex/ts/documents/flex2_hf2/flex_sdk_2_Hotfix3.zip

And final warning: There were three versions of Flex SDK 2: original, hotfix 2 and hotfix 3. Use only «Flex SDK 2 hotfix 3»!
It took me more than 2 working days to guess, that customer provided me with original «Flex SDK 2» which had the serious problem with SOAP WebSrvices requests encoding.