None of them. After Bayesian estimation the parameters in M_.params are set to the posterior mean. But the steady state in oo_.dr.ys is still based on the last MCMC draw. To set it to the value at the posterior mean, you need to run
What is what has to be run?? (i.e. what did you write in between “your need to run” and “again after estimation”; the preformatted text does not show anything).