[ceo2be]

Hi,

I followed the instruction posted in the sticky and tried to upgrade to OS5 on my tmo 8900, no data plan. I deleted the Vendor.xml file, then ran the loader.exe, later on I get an error saying "The blackberry Desktop software does not have blackberry device software for the device you have connected to the computer. Contact your wireless service provider or system administrator."

What am I doing wrong.

Thanks.

[MidnightDraven]

You are required to have a blackberry data plan to upgrade to OS 5.

[dchew]

u need to have the files installed then manually launch apploader.

download the firmware files from here :
us.blackberry.com/support/downloads/download_sites.jsp