Sony Japan have released Official PSP Custom Theme converter version 1.6. It now supports firmwares 6.20 and the PSP Go. Including the the new icon sets from firmware 6.20 / PSP Go which has the resume game icon etc. While the release was on the Sony Japan site, the application thankfully is in English. So now you can whip up a few custom PTF themes for your PSP Go….

No change log or anything since its all in Japanese.