XPR5550 - USB device not recognized

[AFD103]

I've seen a couple threads about this problem, but haven't found a concrete answer yet.

Subject radio is an XPR5550 (non-e) with 2.10 firmware. When I plug the programming cable in, the display flashes the Impres accessory connected screen. The PC throws a pop-up that says the USB device isn't recognized.

Other relevant info:
OEM HKN6184C programming cable
PC is up-to-date WIN10
CPS2.0 version 2.134.76

Cable and PC are known good. I've been able to program other XPR550 radios since then, so it seems to be isolated to the radio.

TX and RX are fine through mic attached to the front port.

I've already tried swapping the control head with a known good head to rule out a port issue. The problem followed the radio.
I've also tried a known good OEM 1410 rear programming cable. Apparently rear programming had been disabled on this radio.

Depot won't touch it, since the non-e model is out of support. (only supported if there's an existing contract, which there is not)

Who's got ideas?

 

[Mboy00]

I have this issue to! Any ideas?

 

[VK6NCB]

Did the radio have a "ignition sense" wire plugged into the rear connector ?
our apprentice was tasked with making a bunch of cables for a client running DM4600/4601 radios, and managed to sneak in a few with the ignition sense wire on the opposite corner, which just happens to be one of slots the USB cable connects to, and adding 12V will kill the USB chip and make the radio unprogrammable. I found this out 6 months later when it was time to reprogram the fleet.
I cant remember if it connected and displayed the Impres connected screen, but it certainly wouldnt program.

 

[Scatpack16]

Have you tried a rear programming cable? Sometimes this has been a quick work around to this same issue for us.

 

[AFD103]

Did the radio have a "ignition sense" wire plugged into the rear connector ?
our apprentice was tasked with making a bunch of cables for a client running DM4600/4601 radios, and managed to sneak in a few with the ignition sense wire on the opposite corner, which just happens to be one of slots the USB cable connects to, and adding 12V will kill the USB chip and make the radio unprogrammable. I found this out 6 months later when it was time to reprogram the fleet.
I cant remember if it connected and displayed the Impres connected screen, but it certainly wouldnt program.

The radio was installed in a commercial vehicle with a factory ignition sense cable attached. I'm getting the feeling that the USB chipset got nuked.

Have you tried a rear programming cable? Sometimes this has been a quick work around to this same issue for us.

See above. Rear programming was disabled in the codeplug.

 

[VK6NCB]

The radio was installed in a commercial vehicle with a factory ignition sense cable attached. I'm getting the feeling that the USB chipset got nuked.

its certainly possible if the ign sense was wired in the opposite corner to the correct one. kills both the front and rear programming, though the radio still functions normally, it just cant be reprogrammed (unless you can do it via OTAP)

took me waaaay too long to figure out what had happened, and I may have killed another USB chip in the process.