This tutorial is not for BB10. The screenshot is from Windows Xp OS, You can also follow the same procedure on Windows Vista,7,8,8.1. You want to upgrade your blackberry to the latest operating system? Or your blackberry display error 507 during booting or your blackberry restarts continuously, then this tutorial is for you.
Below are easy steps you can use to solve these problems
Things you will need
Blackberry phone with fully charged battery
USB cable
Blackberry Desktop manager
Firmware for your blackberry device
NOTE VERY IMPORTANT :
Below are easy steps you can use to solve these problems
Things you will need
Blackberry phone with fully charged battery
USB cable
Blackberry Desktop manager
Firmware for your blackberry device
NOTE VERY IMPORTANT :
Before you continue to reloading new firmware on your blackberry, you need to backup all contents on your blackberry because the process will totally remove all the content on the blackberry device.
Before you continue, you need to make a backup of your blackberry device using the desktop manager
Blackberry desktop manager 6.0.1 can be downloaded from the following links
Firmware for blackberry can be downloaded here
After you have installed installed both the
desktop manager and the firmware use the following steps to upgrade your
blackberry to the firmware you installed in your system
1. Delete the vendor.xml file in the applications folder, use the pictures below to locate the files
Navigate to local disk c:

To programfiles

To common files

To research in motion folder

To apps loader folder

Inside this folder delete Vendor.xml file

2.Double click on appsloader after the vendor.xml file has been deleted to start the upgrading process

and the following screen will be shown
3. At this screen connect your blackberry to your computer system with your usb cable inserted with battery it will detect your blackberry device, immediately it is detected, click next to continue
3. At this screen connect your blackberry to your computer system with your usb cable inserted with battery it will detect your blackberry device, immediately it is detected, click next to continue


5. Now
click finish to complete

6. You
will get to the following screen when you click on the finish button
7. This
screen will show if the process have been completed successfully
Disconnect your phone from your pc at and wait for it to
boot, after reloading operating system the first time boot usually takes a lot
of time.
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