As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HIGH SPEED REJECTED TAKEOFF AT APPROXIMATELY 90 KIAS. BRK OVERHEAT EICAS MSG FOLLOWED QRH PROCEDURE. RIGHT OB BRAKE RAN HOTTEST (450 DEGREES CELSIUS) ALL BRAKES TEMPORARILY IN AMBER. MEDIUM BRAKING WAS APPLIED DURING REJECT-C/A-DEFERRED PER AMM REF AMM 05-50-12 STEP E (D) TDMI AUTHORIZATION NUMBER 056T05102.