Welcome to the official BlackBerry Support Community Forums.

This is your resource to discuss support topics with your peers, and learn from each other.

inside custom component

BlackBerry® OS Smartphones

New Member
Posts: 1
Registered: ‎12-30-2012
My Device: Curve 8520
My Carrier: Tesco

My blackberry curve 8520 is not switching on and flashing 4x

Hi my phone is 6 days old and today cut out whilst I was on a call. I now have a black screen and the red light flashes once and then 4x fast red flashes. I am unable to turn it on. 


I have tried a reboot and have been unsuccessful. I have also followed the instructions on other posts to update the software but even trying to do a forced detection my pc is not connecting with my phone. 


If anyone has ANY suggestions it would be appreciated. 

Forums Veteran III
Posts: 3,804
Registered: ‎12-29-2011
My Device: Z30 / Playbook

Re: My blackberry curve 8520 is not switching on and flashing 4x

Download and install the device software for your phone from



Download and install bbsak.  Here is the guide and instructions for using it.



I hope this helps.

Please click the Thumbs Up icon if this comment has helped you!
If your issue is resolved, please click the solution button on the resolution!
Every BlackBerry should have BlackBerry Protect, get it now! | Follow me on Twitter | Bring Back BBM Music!