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You thought you were doing the right thing by updating your Blackberry, or you were trying to upload an app and things went horribly wrong.  Or you were installing a BlackBerry theme that wasn’t right for your device, and now your device has become useless.

You already tried to attach your USB cable. It connects and disconnects over and over again, and turns on and off. Your device turns on a red LED light for a few seconds, followed by a white screen with an hourglass, and then the display shuts off for a few seconds, and starts up again. So this makes running your BlackBerry Desktop Manager impossible. At this point it seems like your device is going through the same loop over and over again. And you are left frustrated and pulling out your hair.

While a “battery pull” works great for solving most issues it will not work if you have “bricked” your BlackBerry. This will need some extra TLC.

What to do?

You need not to worry. Even though you “bricked” your BlackBerry, there still is hope.

You need to “Reload your Operating System”.

If you follow the simple steps below, you should be up and going in no time.

However, you will need approximately 45minutes to complete the entire procedure.

Tips to remember before you start: 

  •  You are using a Windows Computer. 
  •  Have BlackBerry Desktop Manager installed on your computer.
  • Have the BlackBerry Operating System you want installed on your computer before you start the procedure. 
  • Applications you have installed on your BlackBerry will be lost. Once you have finished the procedure you will have to install all your apps again.

Step #1: Make sure your BlackBerry IS NOT connected to your computer.

Locate and Open the AppLoader application.

Open your file browser, go to your C Drive (operating system drive) and navigate your way through the folders to Program Files > Common Files >Research In Motion > AppLoader.

Once you are in the AppLoader directory, double click on the Loader application shortcut.

When the Loader Homescreen opens, Click Next, and start Step #2

Step #2: Connect the BlackBerry to the Computer via USB cable.

Plug in the BlackBerry, and when COM1 switches to say USB-PIN:UNKNOWN, immediately click Next.

This detects the BlackBerry and takes it out of the reboot cycle. This will let you reload the Operating System.

Tip: The USB-PIN:UNKNOWN option will display for a few seconds when the BlackBerry is first connected & the LED light flashes Red.

This happens when the device is in the initial start-up part of its reboot cycle.

You only have a few seconds to make the next step happen. So you must act quickly.

With the battery pulled out, connect the BlackBerry to the USB connector and as SOON as you see USB-PIN:UNKNOWN hit  Next.

Be quick, using this method you are in control of the timing. Now, put the battery back in.

** If you don’t get it right the first time, try again

(Unplug from USB, pull battery, connect and hit Next while USB-PIN:Unknown is showing) Be fast, timing is crucial for getting it right. You might have to try a few times before you are successful at the timing.

Connect Your BlackBerry via USB. Click NEXT as Soon as USB:UNKNOWN Appears.

Step #3: Your BlackBerry should be out of reboot cycle now.

Choose the options you want to install on your BlackBerry (BlackBerry Messenger, BlackBerry Maps, etc.), click "Next", then approve the installation by clicking “Finish”.

Sit back and relax while the BlackBerry does its thing.  There are numerous screens to go through before you reach "The loading operation was successful" screen.

Your BlackBerry will reboot itself at this point. It will take(10 - 15 minutes) to reboot. You can unplug it from the USB (it’s not connected while rebooting) and just continue to be patient and wait. Eventually, it will boot up.

Step #4: When it does boot up. Select the programs/apps you want on your BlackBerry. Then, click "FINISH" on the Completing Application Loader Wizard.

Sit back and relax and let the installer do its thing.

Installation Complete! Just sit back and let your BlackBerry Reboot

Step #5: You are finally done reloading the Operating System. You can go through the set up wizard and run the BlackBerry Desktop manager. Reload all your apps and sync all your data and contacts.

Congrats! If you followed the steps, you should have a brand new Operating System on your BlackBerry. If you keep having issues visit

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  1. openconnection posted this