The SDK installer for Windows (I’m on Windows 10) overwrites
PowerVR_Graphics/UninstallSDK.exe with the uninstaller for the version it is installing. This orphans earlier versions and leaves you with no way to uninstall them. I have versions 3.5, 4.0 and 2016 R1.1 and now 2017_R1. If I try to uninstall any of these from the list in the Windows Control Panel Applications section, the 2017_R1 uninstaller is run, removing 2017_R1.
I resorted to dragging the old files to the trash to free up the space but I’m left with the older versions still listed in the Windows control panel. How can I get rid of this wreckage?
As well as answering my question, please file an internal issue ticket and make sure this serious bug gets fixed.