Just my opinion, you might very well be able to complete the upgrade successfully with the help of folks on this forum. BUT, if you don't have authorized access to log into Nortel's web site and download S/W, deplists, keycodes, then you might want to do what tnphoneman suggests and call him or another authorized distributor. Unless you have a way back to Nortel in case something goes wrong, you could look bad in front of the client.
Has the client already purchased the upgrade from an authorized Nortel distributor? If so, why isn't that company performing the upgrade?
War Eagle!
Lions Baseball '09!