1. Download installer OS Blackberry, cari dulu di internet, contoh: keyword: 8700 4.5.0.69 Nanti akan mendapatkan URL seperti ini: https://www.blackberry.com/Downloads/entry.do?code=4C56FF4CE4AAF9573AA5DFF913DF997A
2. Install file OS yang sudah di-download di PC (Jangan lupa matikan Desktop Manager dulu)
3. Buka direktori C:\Program Files\Common Files\Research In Motion\AppLoader
4. Hapus file Vendor.xml
5. Colok BlackBerry Publish Postke PC via kabel USB