Droid Eris App Help

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http://forums.androidcentral.com – I was able to charge my old Eris and skip the activation process for Verizon and connect to wifi but now The Market will not open, I was able to download the Amazon App Store but then says there is a Parse Error and downloaded and installed the GetJar app but when I try to download an app it also gives me an error. I only want to use this for to hook up to to my blue tooth speaker that I have at work. All I really want is Pandora and iHeartRadio - or even one of them would be fine. I have never tried rooting a device but would be willing to try anything as long as I have directions of h (HowTos)