You need to file a motion to amend bond conditions with the court. You should at least consult with a local criminal defense attorney (if you are not already represented by someone) to discuss the issues the court will consider, and the best way to address those issues.
Bail bonds in California are valid for the life of the cases unless you miss court or get rearrested. Then, depending on the circumstances, you may need to post another bond.
You need to file a motion to amend bond conditions with the court. You should at least consult with a local criminal defense attorney (if you are not already represented by someone) to discuss the issues the court will consider, and the best way to address those issues.
Common reasons for bond revocation include: Failure to Appear in Court – One of the most straightforward reasons for bond revocation is the defendant's failure to appear for a scheduled court date. The bail bond is a promise to the court that the defendant will attend all required hearings.
No Bond Hold This could happen if the defendant is considered a flight risk, poses a danger to others, or if there are reasons to believe they may tamper with evidence or intimidate witnesses. In such cases, the judge may issue a “no bond hold,” which means the person will remain in custody until their trial.
If he's still incarcerated and bail is $0 than he can't be bailed out. If there are no charges pending but he is still incarcerated then he likely took a plea and is serving a sentence.
The defendant can post their own bail or ask a family member or friend to post it. If the defendant uses a bond company, the company may require the defendant to have a co-signer (someone who will help the company find the defendant should they fail to appear).