Yup, you can do this from home actually, and it’s not very hard. Here ya go
Turn the radio off.
Hold the 1&6 button at the same time
While the 1&6 are pressed, hit volume button at the same time.
This will show your radio’s serial number.
Write this number down.
Then visit this site and enter the serial number
https://radiocodevault.com/honda/
They email codes out after a few hours usually once you submit your info
Try the given code or codes and your radio will turn on.
You don't need to go to the dealership to fix this ;)