Updated mine from the site link provided by Ray, Monday 9:00 PM EST with no problems. The instructions do say to backup the radio to the PPS (I always have my file on there anyway). It did erase the programming on the radio. A quick reprogram and back to normal. My G4 sounds clearer than before but not quite as loud. No Phase 2 nearby to test. I'll have to drive about 90 minutes north Wednesday to see how it sounds on P-2.
Now my thoughts on this whole issue. Unication was under pressure to develop Phase 2. Customers were really pushing it.
Unication found a way to make it work, but this required the radios be sent to their location in Texas. They had to pay for outbound shipping charges, receiving and programming personnel, programming computers, etc. so I understand why they had to charge something. (I didn't need Phase 2 so I didn't send mine in. I was planning on getting a G5 with Phase 2 in 2019 and selling my G4 Phase 1).
Later they developed a way customers could update the firmware themselves, and they felt strongly that performance optimization is a quality standard, not a feature, and they wanted to ensure this optimization was available to every device.
No need to charge now because they didn't have the extra cost of programming the radios in Texas and shipping them back. This is unfortunate for the early birds but that is business. I wouldn't expect a refund in this case, and I don't think they did all this intentionally. Even their dealers had no idea until the new upgrade was announced.