As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE RECEIVED NOSEWHEEL STEERING INOP MSG ON EICAS FOLLOWED QRH BUT MSG DID NOT GO OUT WHEN NLG STEERING SWITCH RETURNED TO ARMED POS TURNED NLG STEERING BACK OFF AS PER QRH AND COORDINATED WITH MX AND FLT CONTROL TO RTB {A/C RETURNED TO ATL AFTER T/O} (EMERGENCY DECLARED} RERIGGED NOSE WHEEL STEERING ECU IAW CRJ 200 AMM 32-51-00 AND CRJ 200 AMM 32-51-20 OPS CHK GOOD. {SDR -CLOSED}