Celestron Nexstar 4SE handset swap from serial to USB

[Relpet]

I seem to have fried the handset on my old 4SE. It's stuck in Transmit Data and every attempt to flash the firmware results in a total lack of response. A company in California is offering a choice of replacement handsets at a reasonable price, even after shipping costs, but the vendor is unable to tell me if the later model with the USB instead of serial connector would be compatible.  Has anyone been down this road successfully, please?

[Cosmic Geoff]

My C8 SE worked with a Nexstar handset, Nexstar+ handset and Starsense handset. I don't know about the USB version.

[Relpet]

Thanks, Geoff.  I'm trying to get a response from Celestron at present but for the life of me I can't see why it wouldn't work.