Bill Cosby, left, exits the courtroom during jury deliberations in his sexual assault trial.
The panel also asked to rehear parts of the 79-year-old comedian's deposition testimony.
Cosby's felony sexual assault case was handed over to jurors on Monday. Cosby denies Constand's allegations, claiming that their encounter was consensual and that he gave her Benadryl.
The sequestered jurors have appeared increasingly exhausted and upset as deliberations dragged on.
Well, the jurors have to figure out which - if any - of the three counts of aggravated indecent sexual assault Cosby is guilty of.
The comedian once dubbed "America's Dad" could spend the rest of his life in prison if convicted.
"That's not how the system works", she said.
The couple and their 14-year-old son and 9-year-old daughter chatted with Cosby on Thursday in a room where he has been spending time while awaiting the jury's verdict.
They are now deadlocked on a verdict. "And they're hearing Mr. C.'s testimony and he's extremely truthful". All the defense has to do is create a reasonable doubt in the jury's mind that Cosby is maybe not a serial rapist.
Constand's lawyer, Dolores Troiani, says only that the jury is "apparently working very hard" to reach agreement on the charges. At the time, the district attorney declined to press charges, citing insufficient evidence.
The judge rejected the call for mistrial, and instead ordered the 12-member jury to reconvene Friday and continue their deliberations until they can end the impasse and reach a decision.
Deliberations, which have now reached almost 40 hours, are set to resume at 9 a.m. Friday.
Dozens of women have come forward to say Cosby had drugged and assaulted them, but this was the only case to result in criminal charges. They looked more upbeat than previous nights. They were bused in from Allegheny County near Pittsburgh and have been sequestered in a hotel for the trial.
The jury tasked with sealing Bill Cosby's fate has deadlocked after 30 hours of deliberations. "I trusted him. Do you understand?"
The announcement of a "hung jury", as it's known, leaves the possibility that O'Neill will declare a mistrial.
Count one and two in the case deal with "lack of consent", and specifically whether Constand was in a state of unconsciousness when she says Cosby sexually assaulted her.
Prosecutors would have the option of seeking a retrial if the jury can not reach a verdict. They now have no direction or instruction from the court about how to interpret it. The judge told them to try again for a verdict. "The jury foreman has informed me that you are deadlocked", O'Neill said.
They will get back to it Friday morning.
Cosby, 79, stood and watched closely as the predominantly white jury of seven men and five women filed into the courtroom, most appearing tired and glum.
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