I'm not even sure the Openreach ECI modems have been provided with firmware that supports vectoring.
The version I have from the modem is:
dsl_vr9_firmware_xdsl-05.06.07.05.01.06_05.06.02.03.00.01.bin
The version version from the Openreach source is:
dsl_vr9_firmware_xdsl-05.04.07.09.01.06_05.04.04.04.01.01.bin
The last digit of the VDSL2 firmware, 6 = no vectoring, 7 = vectoring.
Relatively little is known about what capabilities are supported and enabled in the ECI modems, compared to the HG612, because the ECI modems are harder to unlock. But it looks like, at one point at least, their firmware did not support vectoring. Since a firmware update for the ECI modems to support upstream G.INP never seemed to happen, it seems doubtful anything else is going to be added.