Jman420, when I updated the DSM from DSM 5.1-5022 Update 5 to DSM 5.1-5055, the Synology tool showed the IP address had changed from static to dynamic. It could have been a compatibility issue between XPEnoboot 5.1-5022.3 and DSM 5.1-5055 that caused this. I then changed to XPEnoboot 5.1-5055.1 and selected the update boot option, but then the web GUI wouldn't load. I left it running as is for a few days and then came back to it and for some reason the web GUI was available again. So I tried the migrate option, auto DSM install but then on reboot I got the no valid patch errors.
Hope that makes a bit of sense!