1. Install the software from the CD (that you received with the device), or download it from the service provider (AT&T).
2. Delete or rename the vendor.xml file, here: C:\Program Files\Common Files\Research In Motion\AppLoader (you're windows file options needs to be set to 'show system files', to see said file...
3. Open Desktop Manager (DM)...
4. Connect the Red Pearl (since am sure that's what you have!)...
5. Doing this will force the pc to see the BlackBerry as new hardware, and thus force it to reload the Operating System (OS)...
6. During the process, select YES to do a backup...
7. The whole process should take about 30-45 minutes...
download sources::
desktop manager--- click me!!! for the blackberry 8520 os---- click me!!! ---(just fill out the form here at blackberry)
Answers & Comments
1. Install the software from the CD (that you received with the device), or download it from the service provider (AT&T).
2. Delete or rename the vendor.xml file, here: C:\Program Files\Common Files\Research In Motion\AppLoader (you're windows file options needs to be set to 'show system files', to see said file...
3. Open Desktop Manager (DM)...
4. Connect the Red Pearl (since am sure that's what you have!)...
5. Doing this will force the pc to see the BlackBerry as new hardware, and thus force it to reload the Operating System (OS)...
6. During the process, select YES to do a backup...
7. The whole process should take about 30-45 minutes...
download sources::
desktop manager--- click me!!!
for the blackberry 8520 os---- click me!!! ---(just fill out the form here at blackberry)
after all these it will run like new again