Upgrade OS BB

Steb by step:

1. Find bb os here
   
2. Install OS nya ke PC/Laptop (.exe file)
3. Hapus file vendor.xml di folder C:\Program Files\Common Files\Research In Motion\AppLoader
4. Back up data blackberry anda
• Nyalakan DM
• Connect BB via USB port ke laptop/PC
• Kalau keluar window: "Application update available", pilih CANCEL, karena kita perlu mem Back up data terlebih dahulu
• Pilih "back up & restore", pilih "back up"
• Pastikan proses Back up ini selesai dengan sempurna
5. Upgrade OS
   
• Pilih "Application Loader"
• Input password BB anda (Kalau pakai password)
• Pilih applikasi apa saja yang di inginkan
  
• Standar Applikasi: Blackberry Attachment Service, Blackberry Maps, Blackberry Messenger, Blackberry S/MIME Packages, MemoPad, Tasks, Documents To Go.
• Pilih “Do not automatically back up and restore the device application data during the loading process” click Next, click FINISH
  
6. Tunggu 30 - 60 menit sampai selesai
7. Setelah selesai, bb akan boot up 10-15 menit
8. Restore Data blackberry anda
   
• pilih "back up & restore", pilih "restore"
• locate file back up nya
9. Done

Kalau saya sendiri pakai Bold OS 247. Download here