Also, the APP SDK 3.0 for Win fails installing with the error: Error 1606. Could not access network location http://amd-dev.wpengine.netdna-cdn.com/app-sdk/installers/APPSDKInstaller/3.0.130.135-GA/web/x64/AMD...https://developer.amd.com/
Please try to download the standalone installers from below links:
Full Installers:
32-bit: http://amd-dev.wpengine.netdna-cdn.com/app-sdk/installers/APPSDKInstaller/3.0.130.135-GA/full/AMD-AP...
64-bit: http://amd-dev.wpengine.netdna-cdn.com/app-sdk/installers/APPSDKInstaller/3.0.130.135-GA/full/AMD-AP...
Also, I've uploaded a temporary copy of APP SDK here: Dropbox - APP SDK .
P.S. You've been whitelisted now.