I found the issue is a bug in the tpser.inf config file for the TP Link driver installations with the firmware update. The VID/PID for mine was reported differently to those specified in the file. I...

Hi, the latest firmware is available here http://uk.tp-link.com/download/M5250_V1.html#Firmware

Model : Hardware Version : Not Clear Firmware Version : ISP : Hi, I have an old M5250 that I was trying to update the firmware on via Windows 10. The upgrade utility detects it ok over USB, but when...