Why can't I update the device software?

I have a Curve 9360. I cannot update the software (trying to update to 7.1.0.907) using the desktop software.

Whenever I click update, I get the 'Checking for Blackberry device software updates (please wait)' message.

Then I receive a message saying 'An updated Blackberry desktop software component must be installed before you can continue'.

However, when I click on 'install' I get the following message:

'There was an error updating your software - An error occurred while updating the Blackberry desktop software. Please try again'.

I have spent the last few hours trying to resolve this issue, including trying to reinstall the desktop software from scratch. Anyone have any ideas how to fix this?

Try following these steps.

[TIP]1) Download the latest OS

2) Install the OS to your computer.

3) Delete the vender.xml files from your computer. You can find them located on your computer here:
C:\Users\*user name*\AppData\Roaming\Research In Motion\BlackBerry\Loader XML
C:\Program Files (x86)\Common Files\Research In Motion\AppLoader

4) Backup the data on your phone.

5) Preform a security wipe on your phone.

6) Restart your computer

7) Plug your phone into your computer.

8) Run the Loader.exe file found here: C:\Program Files (x86)\Common Files\Research In Motion\AppLoader. Follow the instruction giving in the program.

9) Open up Desktop Manager and select "Restore". Then under the heading "Select Data to Restore" choose "Select device data and settings". From there only add back in your messages, SMS, MMS, contacts, and BBM. Do not select any of the settings options. [/TIP]