- BlackBerry 7.1 and earlier
The BlackBerry smartphone does not turn on, and the light-emitting diode (LED) flashes twice, pauses, and repeats.
The BlackBerry device software is not installed.
Re-install the BlackBerry Device Software.
To complete the reload using BlackBerry Desktop Software for PC, see KB03621.To complete the reload using BlackBerry Desktop Software for Mac, see KB19915.
By downloading, accessing or otherwise using the Knowledge Base documents you agree:
(b) not to copy, distribute, disclose or reproduce, in full or in part any of the documents without the express written consent of RIM.
Visit the BlackBerry Technical Solution Center at www.blackberry.com/btsc.