1. shibz's Avatar
    Hi, I recently upgraded my 8900 Operating System to the new OS: 5.0.0.461, however when I try to install Blackberry Messenger, it fails to install.

    It displays - "Problem verifying message signature from Blackberry App World. This application must now exit."

    Can anyone please help me with this, I really need Blackberry Messenger on my phone.

    Thanks.
    02-20-10 03:22 PM
  2. fatboy97's Avatar
    First, do a battery pull: leave your device on, pull the battery for 20 seconds, put the battery back in and wait for your device to boot up.

    Next, try it again... either App World or RIM's Blackberry.com website.
    02-20-10 04:07 PM
  3. shibz's Avatar
    Got it working. Thanks.
    02-20-10 04:08 PM
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