I had an install with 55 phones and two of the 9508's won't upgrade. It just says please wait. If I plug a phone that did upgrade and then plug the non working one back in it will work. If the system reboots it goes back to please wait so I had to replace with two new phones that upgraded no problem.
I have tried moving the phones to different ports and they the still won't upgrade and have tried from the memory card, manager and a third party tftp server.
Long shot but maybe the later 7.0.23 manager may help. I just had two combo cards that wouldn't come up on 7.0.5 and had to download the 7.0.23 bins and point my working directory to it to upgrade. The combo cards came right up. In my case, the PCS level of the new combo cards was higher than the rest of the setup. Perhaps it's something like that???
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