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BlackBerry® OS Smartphones

New Contributor
Posts: 3
Registered: ‎10-24-2011
My Device: curve 8520
My Carrier: mobilis

os problem in bb curve 8520


I have curve 8520 with os5, yesterday I downgrade for os4 using DM but I don't like it so I want to reinstall os5 but I can't.

please how can I upgrade my os to version5 again.

thank you.