i have the same problem still after following all instructions and even tried to wipe with Jl cmder. No luck. I tried this one On your computer, Click Start>Run and copy/paste the following exactly (with the quotation marks)
"c:\program files\common files\research in motion\apploader\loader.exe" /nojvm
The Application Loader will pop up so click Next.
Your Pin should display as Unknown, thats normal.
You should see all the apps thats are going to get installed, So click "Next" and "Finish"
Whatever you do, dont unplug it!!! It pay take a while, but let it do its thing
My pin does not show as unknown and when i get to appl loader i dont know where to look for the new bb version to be installed. PLEASE HELP