I had two rides on 390148 yesterday, Birmingham Inter - Euston and Manchester Piccadilly - Euston. I was travelling in First Class coach J on both trips.
Observations : The wi-fi has been degraded significantly, none of new PIS screens working on train. The seating moquette is quite poor shows significant lint etc.
The hinged tables do not have the best hinges so are starting to droop at this early stage. The shop was also cash only. The seating availability cameras do not link correctly to the stations. At Birmingham International PIS screen was showing incoming train 4 carriages of 1st Class with respective loading, when in fact only 3 carriages are 1st or SP on refurbished 390148.
I did also ride 390125 yesterday Euston - Manchester. Wi-fi also degraded.
For balance I travelled on 221114 from Euston - Crewe afterwards and the wi-fi was significantly better than the refurbished 390s. I hear 390155 is out very soon. The connectivity issues really do need to be addressed before they progress too far . Travelled today on 390135 with no issues.
Thanks for the info. I found 390148 on the 14:20 Euston to Milton Keynes and had a ride .
Really liked it to be fair. Very impressed