TS4 Upgrade failure - Upload status: Not a proper FEP image

Hi,
Attempts to upgrade my Portserver TS4 to the latest POST (and Firmware) builds are failing. Both HTTP and TFTP upgrade methods come back with the “Upload status: Not a proper FEP image.” msg. Is this is truly an image issue? I have tried images for both the “Postserver TS 2/4 (legacy)” and “Postserver TS 1/2/4–MEI”, and get the same error. I should mention my TS4 device is currently running a very old Version 82000716_K build (from 2005). Is this possibly an upgrade path issue (i.e. from a very old to latest version)? Any feedback/suggestion is appreciated. Thanks in advance.

Did you ever figured this out? I’m running into the same issue when trying to upgrade from a 2005 build (Version 82001204_H 02/18/2005)

@j_omega I’m afraid I have not.