Thank you for your response.
If your brother was represented by an attorney, as part of a plea agreement
if the court found that he was advised of the consequences of a plea I am afraid that his right to vacate such a plea is waived. The only possible chance your brother has is using a private lawyer and filing an appeal and prove that his counsel did not properly perform his job and seek to have the plea vacated based on "ineffective assistance of counsel," and this would be the only way to get his plea vacated. If you cannot prove the ineffective assistance of counsel in that the public defender did not properly advise him, then I am afraid the plea remains.
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