Many Blackberry users got trouble on Yahoo Messenger installation from their handheld, there is noticed that Yahoo Messenger service is disable for the handheld, the notice is "Service not enabled for this handheld", how to fix the problem?
Download this first, Yahoo Messenger 2,0 Service Book (This is not the application), click here. No password and free. Now open Desktop Manager of Blackberry (make sure to have installed this application in your computer), create data backup from handheld to PC, then from it restore and install the Service Book into connected Blackberry device.If have successfuly installed it, now manually register handheld with RIM Network from HRT Editor (Inside your Blackberry Menu, go to 'Setup' or 'Options', then go to 'Advanced Options', go to 'Host Routing Tables', then look at 'Register Now' after hit 'Menu'. Now register it.Afterwards, send again the backuped data into device. Login to BIS account and resend the Service Books. Now download Yahoo Messenger application from mobile.blackberry.com
