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Georgia is very restrictive regarding expungements (having arrests removed from one's record). In order to be eligible and assuming he was not a juvenile when convicted, a person must show that they were arrested, but never convicted. That is, the charges must have been dropped in order to be eligible.
If he was sentenced under the "First Offender Act," he doesn't need to do anything. If a person was sentenced under the First Offender Act, and successfully completes his probation, he is not considered to have a criminal conviction under Georgia law.
If you brother was convicted and not handled under the First Offender Act, his only option is to ask the governor for a pardon. You can find the application here:
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