01-31-2013 06:28 AM
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It may take time to update your Display picture but not as much as you mentioned , Do a local backup of your BBM contacts then try reinstalling the same it might help.If you want to do that then first Uninstall BlackBerry Messenger from your device.
KB10040 : How to view or remove installed application on a blackberry smartphone
Then perform a battery pull restart by removing the battery while your device is Powered On, after reboot from your BlackBerry browser browse to www.blackberry.com/bbm to download it again. restore your contacts from your backup. See if that helps.