I have tried this repeatedly over the past few days. Kies freezes, usually in the first moment of the "Downloading Firmware Upgrade Components" task. A few times that download reaches 100%, but when the "Downloading File" task starts, only 1 or 2% arrives before I get a time out message.
I had two online chats with Samsung that were not very helpful. I reinstalled Kies. I re-downloaded and reinstalled Kies. I even (at the suggestion of Samsung) reset my Tab (then spent hours reconstructing my setup from the backup & still the Play Store lost some of my apps). Nothing has worked yet.
I am using a Windows 7 laptop with typical download speeds of 3 to 8 megs. I think there must be a bottleneck with Samsung servers. If so, I will just have to wait for demand to wane. Someday I will have ICS
Any other thoughts? Thanks.
Steve