How to restore to Original ROM

[hlouie]

I've installed some of the new Radio's (with GPSOne) and WM 6.1 rom, very fun to play with.

Question, How do I restore back to the ORIGINAL TELUS ROM. Ever time I execute "Telus_HTC_P4000_WM6_07252007.exe" an invalid ID error pops up and ends the update of the old ROM.

Thank-you