This specifically refers to a new software update to the I-Pace that will enable 100kW on ABB/Fastned chargers. We are still waiting for this software to be released for the I-Pace. (The work on the ABB/Fastned side has already been done; they also needed to update the software in their chargers, but that part seems to be completed now).
The car does not recognize the charger manufacturer and/or specific model as such, it only sees Voltage, Amps, and a lot of data value pairs.
There are however - as I have understood - quite some differences, depending on the charger manufacturer & model, in the way the car and the charger communicate with each other. Hence the cause why I-Pace on some charger brands is already charging 100kW successfully and on others not yet. The difference in communication seems to be related to which parameters are exchanged between charger and car, in which frequency, and which responses are programmed in the charger and/or car based on certain values or limits in those data sets. This seems to differ significantly enough between charger manufacturers to cause the fact that the ultra fast charging experience is not yet similar on each and every charger. This WILL be resolved however, as software on both sides is now being fine tuned by all manufacturers involved the game. This problem is by the way not only related to I-Pace, also all other electric vehicles that charge on CCS faster than 50kW have issues (yes, even e-tron, e-Niro and Tesla Model 3!). And at the same time it is not only related to ABB but also to other charger manufacturer's products (I will not name them).
But again: this all will for sure be resolved.
(I have the impression based on all the facts learned so far that the CCS HPC (50kW+) specs were released too soon a couple of years ago by the CCS committee, and that they are now in the process of fixing the (protocol-) damage done...)