It looks like the latest firmware version is 4.8
I don't know what the latest DSP version is on the WS1080 and I don't know if the Whistler upgrade to make the Pro-668 into a WS1080 is any different than the 4.6 firmware update that is available on the web that I did to a Pro-668 before that gave me DMR
I don't know if I can update the DSP to the latest version with that update either.
I don't want to spend 80.00 to find out I won't get anything more than what I can do myself for free
I see there is the official 4.6 firmware and the hacked version that you can load into the 668. I will ask Whistler what version Firmware and DSP their paid conversion will give the 668 and if I will be able to flash it with all future updates from that point on. I didn't see anything that said it would add NXDN to it.
The TRX-1 had NXDN with the latest firmware update.
I don't know if they will ever do a Provoice update.
I keep hoping Whistler would come out with a new model as good as the Uniden 536.
That has DMR, Provoice and NXDN, but at 60.00 per upgrade, adding 180.00 to the price.
I was amazed that the 536 actually receives my county's phase 2 digital P25 simulcast X2-TDMA system clearly with a Yagi antenna and some fine running. Something no other scanner to date had been able to do.
I don't know what the difference is between the WS1080 and the TRX-1. If any.
I plan on asking Whistler that.
I will post what I find out.
Thanks
Bill