Comment 12 for bug 246952

sergio, all looks fine.

This output:

Device /dev/input/event7 opened
Axes query:
Effects: Constant
Number of simultaneous effects: 16
Upload effects[0]: Invalid argument
Upload effects[2]: Invalid argument
Upload effects[3]: Invalid argument
Upload effects[4]: Invalid argument
Upload effects[5]: Invalid argument

Means that you have only constant effect, so you need test option number 1 only. But you try 2 and 3 which are not supported. Also you can run ffcfstress program which should change feedback on your wheel periodically.
Current kernel has no support for autocentering configuration for your wheel (and G25, which has same ID in legacy mode). In future versions it may be added. I send patch to kernel dev team soon.