He has been remanded in custody until 20 March when a case management hearing will take place at Bristol Crown Court.
The 17-year-old, and a 14-year-old boy who has pleaded not guilty to murder and manslaughter in relation to this incident, are due to attend.
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More from Bristol Crown Court
View all Bristol Crown Court coverage
- Ex-Cop Guilty of Shocking Strip Search Sex Crimes
- Teen Denies Murder of 9-Year-Old Girl in Shocking Somerset Stabbing
- Nursery Worker Jailed for 30 Years Over Sickening Abuse of Toddlers
- Prison Pharmacy Tech Jailed for Smuggling Drugs and SIM Cards into Bristol Jail
- Bristol Man Caught After £40,000 Shoplifting Spree
- Double Rapist from Bradford on Avon Must Serve Full Sentence After Failed Appeal