p.230 (The Matrix):
QUOTE
When you are in hot-sim VR mode, you use your Data Processing + Intuition as your Initiative and you get +4D6 Initiative Dice (remember that any enhancements or bonuses cannot take you past the maximum of 5D6 Initiative Dice). You receive a +2 dice pool bonus to all Matrix actions, and you take biofeedback damage as Physical damage.
p.266 (Riggers):
QUOTE
If you’re using hot-sim, you get +3D6 (4D6 total) Initiative dice, and a +1 dice pool bonus that applies to all Matrix test (including Vehicle actions), but all biofeedback damage is Physical damage.
At first I thought the rigger would only get 1 dice pool bonus, unlike the decker who gets 2. But the second quote mentions "all Matrix test", so I guess this is an error, maybe a SR4 rule that wasn't adapted?