Just sent the question to Peartune about the subject. No reply yet, I dont know how responsive they are on these queries!?
I installed "still on" version yesterday. I am running Steps 8000e with the latest firmware. Based on the short test run I already got one error: W011 – Cannot detect travel speed. Trying today with longer test if this happens more often. Keep you posted.
I had this problem with my Peartune and had to uninstall the latest firmware updates. Luckily I have the Shimano SMPCE1 PC interface so was able to do it.
A bit fiddly but the Peartune on my E-Sommet now works as before and assist stops at 30mph
Only problem is I can't get the latest firmware updates as it will stop the Peartune working again. I do still have the 'Low, Medium, High' adjustment in Eco mode though and it works.