How do I get a court order naming me sole heir?
We cannot give legal advice. The following is not a substitute for the advice of a local attorney. But we hope the information will be useful.
Your problem is that your brothers, when they died, may have had heirs as well, and those people are now entitled to the brothers' shares of the $2300. All you can do is contact an attorney in Florida and get him/her to do what is necessary to get the money out of the bank. This is going to involve some court filings. It may not be worth it to an attorney to do this for a relatively small amount of money. But you could make some calls. Good luck.