I launched it in Spain 2 days ago and it's becoming very popular. Over 800 downloads only in megaupload and rapidshare! There is a lot of people thanking me for building this easy method.
Well, now I've made an english translation.
This is a easy and safe installer to help people to downgrade. A voice explain the requeriments and the steps to downgrade, and the automatic setup install the necesay files to downgrade!
Light version doesn't contain the DOWNDATER folder, so it's totally legal to download and spread it.
If you already have your 1.5 but you want to try it, no problem. Just download it and open like you were really downgrading, but don't select any version when it asks for it. You will be able to continue and see the step-by-step talked instructions.
You can download it from the website: http://psp.xtrusion.es/en/